Re: Helping newcomers get involved in Clojure projects
For what it's worth, I would like to see a codecademy.com type site but for Clojure that can take you from 0 to hero, in one place, with interactive tracks depending on subject (i.e. Web-Dev, core functions, key libraries, idioms, regex, encryption, etc.). Something like an interactive SICP to teach core programming concepts but using Clojure would be nice. 4clojure has cool problems but they don't teach you to program. The best resources I've utilized are Clojure in Action and Web Development with Clojure. Clojure from the Ground up and Clojure for the Brave and true were also good. The problem with the books is that the libs/APIs you learn in the tutorials are often deprecated or abandoned by the community for the next hot thing, by the time you even pick them up. One, open source, Community maintained user friendly resource with batteries included would be awesome. By and large community support has been good for me and I am often assisted by the very dude who wrote the book I'm working through. How can I complain about that? This is simply awesome and I hope that stays possible in the future. I would really like a mentor. Any programs that provide this would make the Clojure community stand out as friendly and welcoming, compared to other languages. This is just my two cents. Hope it is useful. Jesse -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Helping newcomers get involved in Clojure projects
For what it's worth, I would like to see a codecademy.com type site but for Clojure that can take you from 0 to hero, in one place, with interactive tracks depending on subject (i.e. Web-Dev, core functions, key libraries, idioms, regex, encryption, etc.). Something like an interactive SICP to teach core programming concepts but using Clojure would be nice. 4clojure has cool problems but they don't teach you to program. The best resources I've utilized are Clojure in Action and Web Development with Clojure. Clojure from the Ground up and Clojure for the Brave and true were also good. The problem with the books is that the libs/APIs you learn in the tutorials are often deprecated or abandoned by the community for the next hot thing, by the time you even pick them up. One, open source, Community maintained user friendly resource with batteries included would be awesome. By and large community support has been good for me and I am often assisted by the very dude who wrote the book I'm working through. How can I complain about that? This is simply awesome and I hope that stays possible in the future. I would really like a mentor. Any programs that provide this would make the Clojure community stand out as friendly and welcoming, compared to other languages. This is just my two cents. Hope it is useful. Jesse -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Extending a data model
Multimethods are fantastic and do indeed work across namespaces if by
across namespaces you mean you can defmethod in ns2 a defmulti in ns1.
On Tuesday, April 15, 2014 2:56:30 AM UTC+1, Andrew Chambers wrote:
An update, I read about protocols and multimethods. I think multimethods
are a decent way to go (cant use protocols without a defrecord) provided
they work across namespaces.
On Tuesday, April 15, 2014 11:52:36 AM UTC+12, Andrew Chambers wrote:
Hi everyone,
I'm new to clojure and in order to learn I'm working on making some
compiler tools which converts a lightweight IR code into assembly.
My data model for an IR function is along the lines of
(def code
{
:entry
[[:loadaddr :x global_label]
[:loadconst 1 :y]
[:add :x :y :z]
[:jmp :exit]]
:exit
[[:ret :z]]
})
This, when translated to assembly and after register allocation would
turn into something like (ignoring calling conventions etc):
(def assembly-code
{
:entry
[[:x86.lea :eax global_label]
[:x86.loadimm 1, :eax]
[:x86.add32 :ebx :eax]
[:jmp :exit]]
:exit
[[:ret]]
})
The problem arises when I have to query the IR code for things like
accesses-memory? or get-output-vars in an
extensible way so that multiple target architectures can be supported.
e.g. (get-output-vars [:add :a :b :c]) - :c
(get-output-vars [:x86.add :a :b]) - :b ;; the input and output
positions are opcode specific
(get-output-vars [:x86.add :a :b]) - :b
(get-output-vars [:divmod :a :b :c :d]) - :c :d
(accesses-memory? :x86.add) - false
(accesses-memory? :x86.load) - true
(accesses-memory? :loadconst) -false
I have to be able to write these functions in a way that knows about the
format of the basic IR opcodes, but can also be extended
to handle opcodes of architectures that don't exist in my code yet, the
extensions would exist within the namespaces of that specific architecture
and shouldn't need to modify the code for the built in opcodes.
What is the most seamless and efficient way to achieve this sort of
function extension in clojure? Also, how would I allow sharing
of implementations where instructions have similar layouts.
e.g.
(get-output-vars [:add :a :b :c]) - :c
(get-output-vars [:sub :a :b :c]) - :c
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Re: Clojure compiletime vs runtime
Ahem :) a) The fn x does not exist in the universe until you call foo, hence you cannot expect the compiler to known anything about it if it's not called before making any reference to x. b) If you refer to x at the top level (the universe above :) before defining it, obviously it does not exist. You might use (declare x) before referring to it. This allows you to define it later at your convenience. c) In general, you should avoid using def/defn within a function. Macros may do that but this is a different story. d) Yes code at the top level is executed, how can you expect the REPL to work interactively if forms are not evaluated first ? A defn expands to a function call, a special form in fact but it still behaves like a function. Any function call at top level will get executed after being compiled to byte code. Now about the compilation step... Traditionally, most Lisps allow you to refer to stuff in interpreted mode not defined yet hoping that it will get defined by the time you run the code that refers to these undefined things. It can even be something transient on the stack... oups... You can still compile in other Lisps but this is a special case where you have to make sure that stuff is defined in some way. You need to add directives to tell the compiler that this stuff will exist later and that it can safely refer to it. On the JVM, some underlying byte code has to be generated for any forms typed in the REPL at the top level any reference has to be defined before hand. There's no other way to generate byte code... there cannot be black holes waiting to get filled later. Hence the compilation phase and the restriction that stuff you refer to are to be defined either directly or using declare. Hope it explains the compromise. Luc P. Is there an explanation of how clojure deals with scoping and its static checking. It seems to be a hybrid of a static language and a dynamic language when it comes to compilation. I'll elaborate. The following code wont compile: (defn x [] nil) (defn y[]) ((x)) however this code will compile: (defn foo[] (defn x[] nil)) (defn y[]) ((x)) but calling y before foo fails with a runtime exception. Also, the following code: (println hello) (defn -main [args] (println world)) prints hello at compile time and also hello world at runtime. My conclusions from this is that the static symbol checker is actually fairly stupid and is just there to provide some simple sanity, and that all toplevel code in a namespace is executed at compile time AND at runtime. Is this correct? -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- Softaddictslprefonta...@softaddicts.ca sent by ibisMail from my ipad! -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Clojure Office Hours
Hi Leif, This is a great activity, thank you for contributing to the community this way! Do not be surprise and discouraged by the fact that the interest seems low. I have a similar experience - in my company we can consult with an industry hero yet people use the opportunity seldom, presumably because of multiple factors: they (wrongly) don't feel that they do not have something important/interesting enough to bother him, they are little scared of talking to and exposing themselves and their work to this experienced guy, and might find it difficult to explain their challenge to an outsider and get an advice within the limited time scope. On the other hand, those who dare to use the opportunity benefit from it greatly. Good luck, Jakub On Friday, April 11, 2014 4:13:18 AM UTC+2, Leif wrote: Hmm... less interest than I'd expected, given recent posts. Maybe I should rename the thread to Free Clojure Consulting / Tutoring. Tht's not spammy. FYI, all bookings are automatically confirmed, so don't fret if I don't instantly respond. @Tim: Sounds good! Of course, now I'll have to take some time this weekend and try to actually understand Om. :) (or maybe ?o_0? ) --Leif On Thursday, April 10, 2014 9:56:37 AM UTC-4, frye wrote: Sounds great. I just sent a request. Tim Washington Interruptsoftware.com http://interruptsoftware.com On Thu, Apr 10, 2014 at 9:43 AM, Colin Fleming colin.ma...@gmail.comwrote: Hi Leif, This sounds like a very interesting project, please report back and let us know how it went! I'd be very interested to know. Cheers, Colin On 11 April 2014 00:53, Leif leif.p...@gmail.com wrote: Hi, everybody. Inspired by the SF Bay Area clojure group, ClojureBridge, and the great talks on community education from Clojure/West on youtube, I've decided to try holding my own personal Clojure office hours (online). I am personally of the opinion that face-to-face interaction is superior, so you may want to get your local user group to follow the Bay Area's lead. But if you don't agree, or you don't live near such a user group, then read on. Borrowed from the Bay Area's posting: This is a [2-person] meetup for anyone who is working on a Clojure project and wants to talk over their code or approach with an experienced Clojure developer. Projects of all levels and complexity are welcome, anyone just getting started in Clojure is encouraged to come in and talk through their first Euler or 4Clojure problems. Disclaimer: This community being what it is, there may be projects of too high a complexity for me, but I'll give it a shot. I'm going to try a test run of this for two weeks, and then I'll have to see what state I'm in (mentally and geographically). If interested, you can book at this link: https://leifpoorman.youcanbook.me/ Note: all the times are evening, US Eastern. That pretty much limits it to the western hemisphere and any east asian friends that want to do some morning hacking. Eastern hemisphere friends, make noise on this thread, and maybe some brave European/Asian clojure developer will try something similar. Cheers, Leif -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Clojure compiletime vs runtime
Why are the toplevel forms which arent macros executed at compile time? For example Lua can be compiled to bytecode without executing its top level calls. On Tue, Apr 15, 2014 at 9:04 PM, Softaddicts lprefonta...@softaddicts.cawrote: Ahem :) a) The fn x does not exist in the universe until you call foo, hence you cannot expect the compiler to known anything about it if it's not called before making any reference to x. b) If you refer to x at the top level (the universe above :) before defining it, obviously it does not exist. You might use (declare x) before referring to it. This allows you to define it later at your convenience. c) In general, you should avoid using def/defn within a function. Macros may do that but this is a different story. d) Yes code at the top level is executed, how can you expect the REPL to work interactively if forms are not evaluated first ? A defn expands to a function call, a special form in fact but it still behaves like a function. Any function call at top level will get executed after being compiled to byte code. Now about the compilation step... Traditionally, most Lisps allow you to refer to stuff in interpreted mode not defined yet hoping that it will get defined by the time you run the code that refers to these undefined things. It can even be something transient on the stack... oups... You can still compile in other Lisps but this is a special case where you have to make sure that stuff is defined in some way. You need to add directives to tell the compiler that this stuff will exist later and that it can safely refer to it. On the JVM, some underlying byte code has to be generated for any forms typed in the REPL at the top level any reference has to be defined before hand. There's no other way to generate byte code... there cannot be black holes waiting to get filled later. Hence the compilation phase and the restriction that stuff you refer to are to be defined either directly or using declare. Hope it explains the compromise. Luc P. Is there an explanation of how clojure deals with scoping and its static checking. It seems to be a hybrid of a static language and a dynamic language when it comes to compilation. I'll elaborate. The following code wont compile: (defn x [] nil) (defn y[]) ((x)) however this code will compile: (defn foo[] (defn x[] nil)) (defn y[]) ((x)) but calling y before foo fails with a runtime exception. Also, the following code: (println hello) (defn -main [args] (println world)) prints hello at compile time and also hello world at runtime. My conclusions from this is that the static symbol checker is actually fairly stupid and is just there to provide some simple sanity, and that all toplevel code in a namespace is executed at compile time AND at runtime. Is this correct? -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- Softaddictslprefonta...@softaddicts.ca sent by ibisMail from my ipad! -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to a topic in the Google Groups Clojure group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/clojure/VUWTAwOEHS0/unsubscribe. To unsubscribe from this group and all its topics, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are
Re: Clojure compiletime vs runtime
You need to distinguish between compiled and aot compiled to byte code. As far as I know, all forms are compiled before they are executed. So, if you type: (+ 1 1) it is first compiled to bytecode, and then run. It's not executed at compile time at all; rather when it is evaluated, it is compiled and then run. If you aot compile, then you are do the same thing, but dump the bytecode to file. So, you still evaluate the entire top level. So, when you say compile, I presume you you mean aot compiled. Macros have to be run, so the question is should they be expanded but not evaluated? And what about macros with side-effects? And if top level forms are NOT evaluated when loaded what would this do: (ns user) (def x 1) (load user_y) === in user_y.clj (def y 1) Now the AOT would only load the first file in the namespace because (load user_y) would not be evaluated. Why are you worried about this? Most of the time compilation in Clojure is an implementation detail, as it is in python. It just happens when it needs to, and away you go. Phil Andrew Chambers andrewchambe...@gmail.com writes: Why are the toplevel forms which arent macros executed at compile time? For example Lua can be compiled to bytecode without executing its top level calls. On Tue, Apr 15, 2014 at 9:04 PM, Softaddicts lprefonta...@softaddicts.cawrote: Ahem :) a) The fn x does not exist in the universe until you call foo, hence you cannot expect the compiler to known anything about it if it's not called before making any reference to x. b) If you refer to x at the top level (the universe above :) before defining it, obviously it does not exist. You might use (declare x) before referring to it. This allows you to define it later at your convenience. c) In general, you should avoid using def/defn within a function. Macros may do that but this is a different story. d) Yes code at the top level is executed, how can you expect the REPL to work interactively if forms are not evaluated first ? A defn expands to a function call, a special form in fact but it still behaves like a function. Any function call at top level will get executed after being compiled to byte code. Now about the compilation step... Traditionally, most Lisps allow you to refer to stuff in interpreted mode not defined yet hoping that it will get defined by the time you run the code that refers to these undefined things. It can even be something transient on the stack... oups... You can still compile in other Lisps but this is a special case where you have to make sure that stuff is defined in some way. You need to add directives to tell the compiler that this stuff will exist later and that it can safely refer to it. On the JVM, some underlying byte code has to be generated for any forms typed in the REPL at the top level any reference has to be defined before hand. There's no other way to generate byte code... there cannot be black holes waiting to get filled later. Hence the compilation phase and the restriction that stuff you refer to are to be defined either directly or using declare. Hope it explains the compromise. Luc P. Is there an explanation of how clojure deals with scoping and its static checking. It seems to be a hybrid of a static language and a dynamic language when it comes to compilation. I'll elaborate. The following code wont compile: (defn x [] nil) (defn y[]) ((x)) however this code will compile: (defn foo[] (defn x[] nil)) (defn y[]) ((x)) but calling y before foo fails with a runtime exception. Also, the following code: (println hello) (defn -main [args] (println world)) prints hello at compile time and also hello world at runtime. My conclusions from this is that the static symbol checker is actually fairly stupid and is just there to provide some simple sanity, and that all toplevel code in a namespace is executed at compile time AND at runtime. Is this correct? -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- Softaddictslprefonta...@softaddicts.ca sent by ibisMail from my ipad! -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to
Re: Clojure compiletime vs runtime
I only noticed it because I was trying to write a macro which expands to multiple def calls. This requires the def's to be inside a do block, which made me question a whole lot about how the AOT compiler works. On Tue, Apr 15, 2014 at 11:05 PM, Phillip Lord phillip.l...@newcastle.ac.uk wrote: You need to distinguish between compiled and aot compiled to byte code. As far as I know, all forms are compiled before they are executed. So, if you type: (+ 1 1) it is first compiled to bytecode, and then run. It's not executed at compile time at all; rather when it is evaluated, it is compiled and then run. If you aot compile, then you are do the same thing, but dump the bytecode to file. So, you still evaluate the entire top level. So, when you say compile, I presume you you mean aot compiled. Macros have to be run, so the question is should they be expanded but not evaluated? And what about macros with side-effects? And if top level forms are NOT evaluated when loaded what would this do: (ns user) (def x 1) (load user_y) === in user_y.clj (def y 1) Now the AOT would only load the first file in the namespace because (load user_y) would not be evaluated. Why are you worried about this? Most of the time compilation in Clojure is an implementation detail, as it is in python. It just happens when it needs to, and away you go. Phil Andrew Chambers andrewchambe...@gmail.com writes: Why are the toplevel forms which arent macros executed at compile time? For example Lua can be compiled to bytecode without executing its top level calls. On Tue, Apr 15, 2014 at 9:04 PM, Softaddicts lprefonta...@softaddicts.cawrote: Ahem :) a) The fn x does not exist in the universe until you call foo, hence you cannot expect the compiler to known anything about it if it's not called before making any reference to x. b) If you refer to x at the top level (the universe above :) before defining it, obviously it does not exist. You might use (declare x) before referring to it. This allows you to define it later at your convenience. c) In general, you should avoid using def/defn within a function. Macros may do that but this is a different story. d) Yes code at the top level is executed, how can you expect the REPL to work interactively if forms are not evaluated first ? A defn expands to a function call, a special form in fact but it still behaves like a function. Any function call at top level will get executed after being compiled to byte code. Now about the compilation step... Traditionally, most Lisps allow you to refer to stuff in interpreted mode not defined yet hoping that it will get defined by the time you run the code that refers to these undefined things. It can even be something transient on the stack... oups... You can still compile in other Lisps but this is a special case where you have to make sure that stuff is defined in some way. You need to add directives to tell the compiler that this stuff will exist later and that it can safely refer to it. On the JVM, some underlying byte code has to be generated for any forms typed in the REPL at the top level any reference has to be defined before hand. There's no other way to generate byte code... there cannot be black holes waiting to get filled later. Hence the compilation phase and the restriction that stuff you refer to are to be defined either directly or using declare. Hope it explains the compromise. Luc P. Is there an explanation of how clojure deals with scoping and its static checking. It seems to be a hybrid of a static language and a dynamic language when it comes to compilation. I'll elaborate. The following code wont compile: (defn x [] nil) (defn y[]) ((x)) however this code will compile: (defn foo[] (defn x[] nil)) (defn y[]) ((x)) but calling y before foo fails with a runtime exception. Also, the following code: (println hello) (defn -main [args] (println world)) prints hello at compile time and also hello world at runtime. My conclusions from this is that the static symbol checker is actually fairly stupid and is just there to provide some simple sanity, and that all toplevel code in a namespace is executed at compile time AND at runtime. Is this correct? -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the
Re: [ANN] Gorilla REPL 0.2.0 - all new extensible renderer
This is awesome (reminds me of ipython notebooks). I hope to use this to custom render some data structures internal to my compiler project. I'll have to read up on how to render directed graphs. On Thursday, March 20, 2014 9:22:57 AM UTC+13, Jony Hudson wrote: Hi all, I'm happy to announce a new release of Gorilla REPL. The number one comment I got from people on the original release was that it looked good, but they'd like to see it extended to some library or other. Jeff Rose hit the nail on the head with: Being able to render values of different types is important, and I think it deserves a lot of attention in both the design and documentation. So with that in mind, on to the changes: - All new renderer. This is the main change. The new renderer is simple and predictable, _very_ flexible, supports first-class pluggable custom rendering, and really respects the structure of Clojure values. In particular it renders aggregates of values as you might hope, so you can draw lists of tables, tables of plots, associatives of tables of tables of plots etc. I've made a couple of videos walking through its features, and how easy it is to extend. I'm really pleased with how it's come out :-) https://vimeo.com/89529751 https://vimeo.com/89532785 As per the request, there's also documentation on it. Enough to choke a horse! http://gorilla-repl.org/renderer.html - You can open multiple tabs on the same REPL. This works really nicely - they each get they own session, but share the REPL. - Runs a real nREPL server now, so should work together with things like vim-fireplace that make their own connection to the REPL server. (I haven't tested this though!) - As you might have guessed from the above, there's now a website. http://gorilla-repl.org - Numerous small bug-fixes and feature requests. There are some minor breaking changes, hence the version bump: - Old worksheets will need to be re-run to regenerate their output. - Code that dabbled with the internals of gorilla-plot might need to be adjusted. It's on clojars now, with coordinates [gorilla-repl 0.2.0] . The new renderer lays the foundation for adding rendering for other libraries. I'd love to see support for core.matrix and Incanter, so I think this will be the immediate focus of development. If you maintain a library and would like to see it supported, then please do get in touch. As always, all comments and criticism gratefully received. [Proof-reading this email, I realise I sound rather pleased with myself. My apologies for that, but in truth I think I _am_ rather pleased with how this version has came together!] Yours, Jony -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Clojure Office Hours
I just came from an office hours session, yesterday with Leif. This is good stuff guys, and a great way to learn and meet with other developers. Highly recommended. Thanks Leif Tim Washington Interruptsoftware.com http://interruptsoftware.com On Tue, Apr 15, 2014 at 5:12 AM, Jakub Holy jakub.h...@iterate.no wrote: Hi Leif, This is a great activity, thank you for contributing to the community this way! Do not be surprise and discouraged by the fact that the interest seems low. I have a similar experience - in my company we can consult with an industry hero yet people use the opportunity seldom, presumably because of multiple factors: they (wrongly) don't feel that they do not have something important/interesting enough to bother him, they are little scared of talking to and exposing themselves and their work to this experienced guy, and might find it difficult to explain their challenge to an outsider and get an advice within the limited time scope. On the other hand, those who dare to use the opportunity benefit from it greatly. Good luck, Jakub On Friday, April 11, 2014 4:13:18 AM UTC+2, Leif wrote: Hmm... less interest than I'd expected, given recent posts. Maybe I should rename the thread to Free Clojure Consulting / Tutoring. Tht's not spammy. FYI, all bookings are automatically confirmed, so don't fret if I don't instantly respond. @Tim: Sounds good! Of course, now I'll have to take some time this weekend and try to actually understand Om. :) (or maybe ?o_0? ) --Leif On Thursday, April 10, 2014 9:56:37 AM UTC-4, frye wrote: Sounds great. I just sent a request. Tim Washington Interruptsoftware.com http://interruptsoftware.com On Thu, Apr 10, 2014 at 9:43 AM, Colin Fleming colin.ma...@gmail.comwrote: Hi Leif, This sounds like a very interesting project, please report back and let us know how it went! I'd be very interested to know. Cheers, Colin On 11 April 2014 00:53, Leif leif.p...@gmail.com wrote: Hi, everybody. Inspired by the SF Bay Area clojure group, ClojureBridge, and the great talks on community education from Clojure/West on youtube, I've decided to try holding my own personal Clojure office hours (online). I am personally of the opinion that face-to-face interaction is superior, so you may want to get your local user group to follow the Bay Area's lead. But if you don't agree, or you don't live near such a user group, then read on. Borrowed from the Bay Area's posting: This is a [2-person] meetup for anyone who is working on a Clojure project and wants to talk over their code or approach with an experienced Clojure developer. Projects of all levels and complexity are welcome, anyone just getting started in Clojure is encouraged to come in and talk through their first Euler or 4Clojure problems. Disclaimer: This community being what it is, there may be projects of too high a complexity for me, but I'll give it a shot. I'm going to try a test run of this for two weeks, and then I'll have to see what state I'm in (mentally and geographically). If interested, you can book at this link: https://leifpoorman.youcanbook.me/ Note: all the times are evening, US Eastern. That pretty much limits it to the western hemisphere and any east asian friends that want to do some morning hacking. Eastern hemisphere friends, make noise on this thread, and maybe some brave European/Asian clojure developer will try something similar. Cheers, Leif -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: true lightweight threads on clojurescript?
You need to write either an interpreter of some sort of bytecode in javascript/clojurescript and and have the interpreter implement the threading, or use a webworker for each process then something like core.async for sending ui events to the main browser loop. Clojurescript doesnt attempt to emulate full threads. On Wednesday, April 9, 2014 8:51:57 AM UTC+12, t x wrote: Hi, * I am aware of core.async. However, I don't like the fact that (go ... ) is a macro, thus forcing the ! and ! to appear in the body, and I can't do nested things like: (defn foo [chan] (let [x (! chan)] ... )) (go ... (foo ... )) * For the following, I only need it to work in ClojureScript. I don't need it to work in Clojure. Furthermore, we can assume browser = latest Firefox, or browser = latest Chrome. Now, my question: is there a library which provides true lightweight Clojurescript threads? Thanks! -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Clojure compiletime vs runtime
Compilation is mandatory before executing anything. By default when code is loaded it's executed. That's how a Lisp behaves. If you want to isolate compilation, from execution, you can use AOT (ahead of time compilation). You would use this to deliver compiled code w/o source code, make sure there's no missing references, ... But this is not used in interactive development where you want to redefine stuff, change states, and be as dynamic as possible. Do you have a specific need that you want to cover ? Luc P. Why are the toplevel forms which arent macros executed at compile time? For example Lua can be compiled to bytecode without executing its top level calls. On Tue, Apr 15, 2014 at 9:04 PM, Softaddicts lprefonta...@softaddicts.cawrote: Ahem :) a) The fn x does not exist in the universe until you call foo, hence you cannot expect the compiler to known anything about it if it's not called before making any reference to x. b) If you refer to x at the top level (the universe above :) before defining it, obviously it does not exist. You might use (declare x) before referring to it. This allows you to define it later at your convenience. c) In general, you should avoid using def/defn within a function. Macros may do that but this is a different story. d) Yes code at the top level is executed, how can you expect the REPL to work interactively if forms are not evaluated first ? A defn expands to a function call, a special form in fact but it still behaves like a function. Any function call at top level will get executed after being compiled to byte code. Now about the compilation step... Traditionally, most Lisps allow you to refer to stuff in interpreted mode not defined yet hoping that it will get defined by the time you run the code that refers to these undefined things. It can even be something transient on the stack... oups... You can still compile in other Lisps but this is a special case where you have to make sure that stuff is defined in some way. You need to add directives to tell the compiler that this stuff will exist later and that it can safely refer to it. On the JVM, some underlying byte code has to be generated for any forms typed in the REPL at the top level any reference has to be defined before hand. There's no other way to generate byte code... there cannot be black holes waiting to get filled later. Hence the compilation phase and the restriction that stuff you refer to are to be defined either directly or using declare. Hope it explains the compromise. Luc P. Is there an explanation of how clojure deals with scoping and its static checking. It seems to be a hybrid of a static language and a dynamic language when it comes to compilation. I'll elaborate. The following code wont compile: (defn x [] nil) (defn y[]) ((x)) however this code will compile: (defn foo[] (defn x[] nil)) (defn y[]) ((x)) but calling y before foo fails with a runtime exception. Also, the following code: (println hello) (defn -main [args] (println world)) prints hello at compile time and also hello world at runtime. My conclusions from this is that the static symbol checker is actually fairly stupid and is just there to provide some simple sanity, and that all toplevel code in a namespace is executed at compile time AND at runtime. Is this correct? -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- Softaddictslprefonta...@softaddicts.ca sent by ibisMail from my ipad! -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to a topic in the Google Groups Clojure group. To unsubscribe from this topic, visit
Re: Linked Hash Map/Set
Thanks for the pointers Andy. I had a look at the ordered-map and indeed is a smart and fast implementation. However it relies on continuously growing a backing array, filling dissoc-iated values with nil and hoping that at one point the user will call (compact map) to free all the unused positions. In theory my implementation should scale better as it only uses the space that it needs. However after more benchmarking I observed the following: - (assoc with multiple key-vals) does indeed slow down the operations. But calling transient and persistent! only makes things worse with bigger maps (I guess the whole map is copied before making it transient). - There is quite a bottleneck due to querying 'head' and 'tail' on every insertion. I thought the performance of a standard hash-map was definitely better :) I could speed up the assoc performance avoiding the insertion of head and tail inside the delegate-map and keeping those two nodes as class fields. That won't make dissoc better but it seems like a reasonable compromise. Out of curiosity, is anybody using ordered-map in their projects? Since performance is comparable to a standard hash-map I would always prefer to use it for the deterministic ordering of the keys. Makes reproducing and catching bugs/errors easier imho. On Monday, April 14, 2014 10:48:48 PM UTC+2, Andy Fingerhut wrote: You may also want to take a look at the 'ordered' library, intended to achieve a similar affect as you describe of remembering elements in the order they were inserted. I don't know which of the two Github repos below is the current latest one, but it should be one of them: https://github.com/flatland/ordered https://github.com/amalloy/ordered Andy On Mon, Apr 14, 2014 at 12:36 PM, Andy Fingerhut andy.fi...@gmail.comjavascript: wrote: I don't have time right now to look at the details of your implementation, but can answer at least one of your questions. Clojure's normal PersistentHashMap data structure does create a new object for every key you remove (with dissoc), add, or modify the value for (with assoc). So if a single assoc call is made that adds/changes the values for 5 keys, 5 new PersistentHashMap objects will be created. That can be avoided if you call transient first, then assoc! N times (each time on the result returned by the previous assoc!), then persistent. There the assoc! calls still can create new objects, but they will often simply edit the existing transient data structure in place. These are a bit trickier to implement, so if I were you I would focus on getting the persistent version correct and as fast as you can before worrying about a transient version. Either that, or do not even both creating a transient version at all. Andy On Mon, Apr 14, 2014 at 11:59 AM, Frankie Sardo fran@gmail.comjavascript: wrote: I'm on a mission to implement an ordered map and set structure for Clojure. Much like LinkedHashMap for Java but as a persistent data structure. The idea is that instead of saving a simple [k v] MapEntry we can save [k v left-node-key right-node-key] plus a global head-node-key to walk through the chains of nodes. Adding a new element creates a new node with a reference on the current tail and the head node and updates the tail and head node to reference the new key in the middle. Removing an element dissociates the selected node and associates the newly updated nodes at the left and the right of the removed one. What puzzles me is the overall performance of this data structure. While Big-O complexity is the same I knew it would be slower due to extra accesses to the inner map, but I expected to be close to the performance of a normal hash-map. Instead insertion is about 5x slower while the removal is 2x slower. So I wonder: is assoc-ing multiple keys at a time generating multiple persistent maps? Or am I doing something blatantly wrong here? However, if somebody'd like to have a look at it I pushed an initial version here https://github.com/frankiesardo/linked. Any help is much appreciated as I'm still a Clojure newbie. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.comjavascript: Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com javascript: For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@googlegroups.com javascript:. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups
Re: Annotations on gen-class :state
I think not too favorably. :) See http://clojure.org/datatypes where Rich says concrete derivation is bad. I do not think he would be interested in adding anything to Clojure that included concrete derivation. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: How to work with variables that need to change
Hi, Cecil. The difference is that doseq is used to produce side-effects, which is idiomatic, which is exactly what you did. When using doseq you can be sure that it's body will evaluate, whereas with map, for, reduce you can't - they expect pure functions, and produce lazy sequences, and there in no way for them to know that you want these sequences evaluated. At least, this is my understanding at the moment. Because you said you liked clean code, I'd like to point out that your solution, although works, relies on mutating state of external vars, i.e. producing side effects, which is not necessary, and looks spaghetti-like, somewhat. Instead, you could modify return value of foo function to return a vector of [result, time], or, because you seem to not care about the result, time the function took to complete. It would look similar to what you already did: - first define a higher order function, that records executions time of a supplied function: (defn timed [f] (fn [ args] (let [start (.getTimeInMillis (now)) result (apply f args) end (.getTimeInMillis (now))] [result (- end start)]))) - define a timed version of foo: (defn foo' (timed foo)) - use it with doseq, because you are doing side-effects: (doseq [time (map second (map foo' numbers))] ;; alternatively, you can use threading macro: (doseq [time (- numbers (map foo') (map second))] (println it took time ms)) And it works! Without mutating global state, with pure functions - what a marvel. However, one piece is missing: number of threads the foo function was using - the whole point of this typing, eh, programming, I mean. You have 2 options here. First, the most obvious, is to return that number in foo. Second is applicable if you're doing what I think you're doing - applying the same computational algorithm using different number of threads. If second is true, you know number of threads you are going to use beforehand and foo could use them as input... ah, well, this is exactly what you were doing, I know realize, numbers being number of threads to use. Anyways, in light of this knowledge we can now rewrite doseq part as: (doseq [[time nthreads] (map (fn [n] [(second (foo' n)) n]) numbers)] (println nthreads threads took time ms to compute things)) Yay! Note, that timed should work regardless of what function you supply to it. On Saturday, April 12, 2014 10:33:02 PM UTC+5:45, Cecil Westerhof wrote: 2014-04-12 18:19 GMT+02:00 Fergal Byrne fergalby...@gmail.comjavascript: : On Sat, Apr 12, 2014 at 4:55 PM, Cecil Westerhof cldwes...@gmail.comjavascript: wrote: (- numbers (reduce timed-foo []) (map format-time) println) (- numbers (reduce timed-foo []) (map format-time) (map println)) That was my first thought also, but that displays nothing. But the following works: (doseq [i (- numbers (reduce timed-foo []) (map format-time))] (println i)) -- Cecil Westerhof -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: How to work with variables that need to change
One nitpick I noticed, reduce is eager, not lazy. On Tue, Apr 15, 2014 at 9:25 AM, Alex Vzorov alex.vzo...@gmail.com wrote: Hi, Cecil. The difference is that doseq is used to produce side-effects, which is idiomatic, which is exactly what you did. When using doseq you can be sure that it's body will evaluate, whereas with map, for, reduce you can't - they expect pure functions, and produce lazy sequences, and there in no way for them to know that you want these sequences evaluated. At least, this is my understanding at the moment. Because you said you liked clean code, I'd like to point out that your solution, although works, relies on mutating state of external vars, i.e. producing side effects, which is not necessary, and looks spaghetti-like, somewhat. Instead, you could modify return value of foo function to return a vector of [result, time], or, because you seem to not care about the result, time the function took to complete. It would look similar to what you already did: - first define a higher order function, that records executions time of a supplied function: (defn timed [f] (fn [ args] (let [start (.getTimeInMillis (now)) result (apply f args) end (.getTimeInMillis (now))] [result (- end start)]))) - define a timed version of foo: (defn foo' (timed foo)) - use it with doseq, because you are doing side-effects: (doseq [time (map second (map foo' numbers))] ;; alternatively, you can use threading macro: (doseq [time (- numbers (map foo') (map second))] (println it took time ms)) And it works! Without mutating global state, with pure functions - what a marvel. However, one piece is missing: number of threads the foo function was using - the whole point of this typing, eh, programming, I mean. You have 2 options here. First, the most obvious, is to return that number in foo. Second is applicable if you're doing what I think you're doing - applying the same computational algorithm using different number of threads. If second is true, you know number of threads you are going to use beforehand and foo could use them as input... ah, well, this is exactly what you were doing, I know realize, numbers being number of threads to use. Anyways, in light of this knowledge we can now rewrite doseq part as: (doseq [[time nthreads] (map (fn [n] [(second (foo' n)) n]) numbers)] (println nthreads threads took time ms to compute things)) Yay! Note, that timed should work regardless of what function you supply to it. On Saturday, April 12, 2014 10:33:02 PM UTC+5:45, Cecil Westerhof wrote: 2014-04-12 18:19 GMT+02:00 Fergal Byrne fergalby...@gmail.com: On Sat, Apr 12, 2014 at 4:55 PM, Cecil Westerhof cldwes...@gmail.comwrote: (- numbers (reduce timed-foo []) (map format-time) println) (- numbers (reduce timed-foo []) (map format-time) (map println)) That was my first thought also, but that displays nothing. But the following works: (doseq [i (- numbers (reduce timed-foo []) (map format-time))] (println i)) -- Cecil Westerhof -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [ANN] Gorilla REPL 0.2.0 - all new extensible renderer
Thanks for the kind words chaps - glad you like it! @Steve Are you sure your Leiningen is up to date? I've only seen this problem when accidentally trying to run Gorilla with Lein 1.7 (as Debian seems to have that version as its default install). @Andrew Probably not what you're looking for, but there should be a renderer for Loom graphs soon, which shells out to GraphViz to do the heavy lifting. Take a look at this PR: https://github.com/aysylu/loom/pull/20 . Even if your data doesn't fit with loom then it might be useful for an idea. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [ANN] Sente - Clojure(Script) + core.async + WebSockets/Ajax
Hey Peter, I like the UUID feature, but it doesn't look like the list of all connected users is available in the API. How would you do a global broadcast to all connected clients using Sente? I'm having trouble figuring out how to write a chat demo using Sente. Thanks for your work! On Wednesday, February 26, 2014 6:57:24 AM UTC-7, Peter Taoussanis wrote: Hi folks, Quick post to announce a new lib release: https://github.com/ptaoussanis/sente From the README: *Sente* is small client+server library that makes it easy to build *reliable, high-performance realtime web applications with Clojure*. * *Bidirectional a/sync comms* over both *WebSockets* and *Ajax* (auto-selecting). * *Robust*: auto keep-alives, buffering, mode fallback, reconnects. * edn rocks. So *send edn, get edn*: no json here. * *Tiny, simple API*: make-channel-socket! and you're good to go. * Automatic, sensible support for users connected with *multiple clients* and/or devices simultaneously. * *Flexible model*: use it anywhere you'd use WebSockets or Ajax. * *Fully documented, with examples* (more forthcoming). * Small: *less than 600 lines of code* for the entire client+server implementation. * *Supported servers*: currently only http-kit, but easily extended. --- Have been using something like this in production since a little after core.async came out, and wouldn't want to go back. Note that I tweaked a few things for the public release so there may be some rough edges initially. An example project's included (new as of today) and there's a Leiningen alias configured to handle all the fiddly bits like getting the Cljx and Cljs to compile: just download, `lein start-dev` at a terminal, and you're good to go. Any questions/problems/whatever, you can reach me here or on GitHub. That's it! Happy hacking, cheers! :-) - *Peter Taoussanis* https://twitter.com/ptaoussanis https://www.taoensso.com/clojure-libraries -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Helping newcomers get involved in Clojure projects
Is there a generalized framework we can use for such 'codeacademy' sites? The closest thing that already exists I think is 4clojure, perhaps adding a tracks-navigation sort of thing would address that specific need? Though, I think my criticism with these things, is the best way to learn really depends on how much time you have and your level of experience. If you have a ton of time, ie a full-time job, then you're going to learn compojure much 'deeper' and faster in the long run by simply reading the compojure library code, following trails, and implementing what you need. Learning the syntax doesn't tell you much about ring-handlers, middleware, the weird destructuring, etc.. If you build on lower abstractions (ring) first, it might address that particular issue, at the expense of people feeling like they're doing irrelevant stuff. Honestly, I felt the same way about the compojure tutorials :-). But, I'm not sure how I'd make them better. M-. is my best friend. I think 4clojure itself does the right thing, using the most base/general/accessible abstractions and making it fun (in my opinion), building muscle memory. All that said, I'd be happy to contribute problems/solutions to such a thing if it existed. On Tue, Apr 15, 2014 at 3:10 AM, kurofune jesseluisd...@gmail.com wrote: For what it's worth, I would like to see a codecademy.com type site but for Clojure that can take you from 0 to hero, in one place, with interactive tracks depending on subject (i.e. Web-Dev, core functions, key libraries, idioms, regex, encryption, etc.). Something like an interactive SICP to teach core programming concepts but using Clojure would be nice. 4clojure has cool problems but they don't teach you to program. The best resources I've utilized are Clojure in Action and Web Development with Clojure. Clojure from the Ground up and Clojure for the Brave and true were also good. The problem with the books is that the libs/APIs you learn in the tutorials are often deprecated or abandoned by the community for the next hot thing, by the time you even pick them up. One, open source, Community maintained user friendly resource with batteries included would be awesome. By and large community support has been good for me and I am often assisted by the very dude who wrote the book I'm working through. How can I complain about that? This is simply awesome and I hope that stays possible in the future. I would really like a mentor. Any programs that provide this would make the Clojure community stand out as friendly and welcoming, compared to other languages. This is just my two cents. Hope it is useful. Jesse -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Puppet Labs and Trapperkeeper
Yep, you've pretty much nailed it... the design was heavily inspired by the OSGi service registry, but we didn't really have a need for most of the other functionality that OSGi offers. So we basically just came up with a way to describe services via Clojure protocols, and then we wire them together with Prismatic graph (thanks, Prismatic!). Hope folks find it useful! On Mon, Apr 14, 2014 at 9:24 PM, Mike Haney txmikes...@gmail.com wrote: Great timing on the new blog post. I'm ramping up on my first real clojure app, and have been planning to use Component for this piece. I read the first blog post yesterday and it sounded interesting, but I've pretty much locked down the stack I'm going to use (you can evaluate libraries forever, but at some point you just have to stop looking and pick one to go with). But after reading the new post, I think it's worth taking a look at Trapperkeeper. Even if I don't switch now, if all goes well I would like to turn this app into a larger SaS offering, possibly multi-tenant, and I could see something like Trapperkeeper helping there. I get the distinct impression you have some former OSGI users on your team? This reminds me a lot of the service registry in OSGI. And I don't mean that as an insult - the service registry was the best part, it was all the other crap that made it painful to use (particularly anything from eclipse, which ruined OSGI in my opinion, but that's another rant). Anyway, this looks like something that could be useful in many cases, and thank you for open-sourcing it. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [ANN] Sente - Clojure(Script) + core.async + WebSockets/Ajax
Hey Sam! it doesn't look like the list of all connected users is available in the API. Yeah, that's right. Have been punting on this... For the moment have left it up to applications to decide who they're interested in broadcasting to. This might be everyone that's connected, everyone that's connected with certain credentials, everyone subscribed to certain topics, etc. Basically the application's expected to keep an appropriate index of event-types - user-ids. Haven't thought much about what kind of help the core API could offer. Probably a good starting point would be a simple set of all currently connected uids. Then folks could intersect that against their own subscriptions, etc. Would that be helpful in your case? Otherwise, like I say - haven't thought much about this so ideas would be very welcome. Cheers! :-) -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
One app, multiple mains \ processes -- heroku style architecture
I've been reading about Heroku's process model and their approach to web app architecture. I'm curious how you could recreate something like this: https://devcenter.heroku.com/articles/getting-started-with-clojure#one-off-scripts Using an uberjar in environments other than heroku. Would it make sense to uberjar with multiple profiles and separate mains for each type of process. An app, worker, scheduler, etc. I imagine in that case you spin up each version of your app on the full JVM and that could get troublesome. Much of this stems from wanting to separate my scheduled tasks from the same process as my web app. I haven't found a good way to do this and this approach seems like a move in the right direction at least. Any thoughts? -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [ANN] Sente - Clojure(Script) + core.async + WebSockets/Ajax
I think the two granularities I'd be interested in are channels and individual users. If we exposed a global list of uids, and a list of UIDs per channel, I think we'd have enough to build up a nice set of broadcast operations. For example: - Broadcast to this channel for users that pass this predicate - hit these multiple channels except for these users - re-broadcast this user's message to everyone in the channel except this user So yeah, I think that exposing a list will get us pretty far. The missing piece, then, would be the ability for a a client to send a connection request for a specific channel. Peter Taoussanis mailto:ptaoussa...@gmail.com April 15, 2014 10:18 AM Hey Sam! it doesn't look like the list of all connected users is available in the API. Yeah, that's right. Have been punting on this... For the moment have left it up to applications to decide who they're interested in broadcasting to. This might be everyone that's connected, everyone that's connected with certain credentials, everyone subscribed to certain topics, etc. Basically the application's expected to keep an appropriate index of event-types - user-ids. Haven't thought much about what kind of help the core API could offer. Probably a good starting point would be a simple set of all currently connected uids. Then folks could intersect that against their own subscriptions, etc. Would that be helpful in your case? Otherwise, like I say - haven't thought much about this so ideas would be very welcome. Cheers! :-) -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com mailto:clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. Sam Ritchie mailto:sritchi...@gmail.com April 15, 2014 9:05 AM Hey Peter, I like the UUID feature, but it doesn't look like the list of all connected users is available in the API. How would you do a global broadcast to all connected clients using Sente? I'm having trouble figuring out how to write a chat demo using Sente. Thanks for your work! On Wednesday, February 26, 2014 6:57:24 AM UTC-7, Peter Taoussanis wrote: -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com mailto:clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. Peter Taoussanis mailto:ptaoussa...@gmail.com February 26, 2014 6:57 AM Hi folks, Quick post to announce a new lib release: https://github.com/ptaoussanis/sente From the README: *Sente* is small client+server library that makes it easy to build *reliable, high-performance realtime web applications with Clojure*. * *Bidirectional a/sync comms*over both*WebSockets*and*Ajax*(auto-selecting). * *Robust*: auto keep-alives, buffering, mode fallback, reconnects. * ednrocks. So*send edn, get edn*: no json here. * *Tiny, simple API*:|make-channel-socket!|and you're good to go. * Automatic, sensible support for users connected with*multiple clients*and/or devices simultaneously. * *Flexible model*: use it anywhere you'd use WebSockets or Ajax. * *Fully documented, with examples*(more forthcoming). * Small:*less than 600 lines of code*for the entire client+server implementation. * *Supported servers*: currently onlyhttp-kit, but easily extended. --- Have been using something like this in production since a little after core.async came out, and wouldn't want to go back. Note that I tweaked a few things for the public release so there may be some rough edges initially. An example project's included (new as of today) and there's a Leiningen alias configured to handle all the fiddly bits like getting the Cljx and Cljs to compile: just download, `lein start-dev` at a terminal, and you're good to go. Any questions/problems/whatever, you can reach me here or on GitHub. That's it! Happy hacking, cheers! :-) - *Peter
Re: [Video] Game development in Clojure (with play-clj)
James, I have a question. I see this pattern a lot in the sample code and in your code as well, for example: (defn- move-player [entities] (- entities (map (fn [entity] (- entity (update-player-position) (update-hit-box (remove-touched-apples))) When the entities vector gets threaded through the map function, it comes out as a LazySeq. But don't we want to keep the entities as a vector? This seems to be causing problems in my own code, and the only way to keep it working is to change it back to a vector every time I do this, which seems inelegant. Just wondering if I'm missing something. -Kris On Sun, Apr 13, 2014 at 3:13 PM, James Trunk james.tr...@gmail.com wrote: There's a link to a gist of core.cljhttps://gist.github.com/Misophistful/9892203in the video's description. Cheers, James On Monday, April 14, 2014 12:08:16 AM UTC+2, Kris Calabio wrote: Actually, I thought it would be even more helpful if you had the source code available (for searching/skimming). Is that somewhere online? -Kris On Sun, Apr 13, 2014 at 2:47 PM, James Trunk james...@gmail.com wrote: Hi Kris, Thanks for your comment, and I'm very glad that you found the video helpful. I started doing screencasts because I realised that I learn a new concept fastest by watching someone else doing/explaining it - and I figured I might not be the only one. Saying that, I know screencasts aren't for everyone, and they have a few drawbacks compared to text (harder to search, skim, or repeat sections). So positive comment like yours remind me that I'm not the only auditory/visual learner around here, and inspire me to keep going. Thanks! James On Saturday, April 12, 2014 11:28:29 PM UTC+2, Kris Calabio wrote: Great video! I've looked through Zach's examples, and even started coding a game myself. But your screencast helped me have a better understanding of some of the concepts and code that I was having trouble understanding just by looking at the example games. Thanks! -Kris On Thursday, March 27, 2014 10:07:21 AM UTC-7, James Trunk wrote: Hi everyone, I thought some of you might be interested to watch my screencast about game development in Clojure with play-cljhttps://www.youtube.com/watch?v=9ilUe7Re-RA . Cheers, James -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to a topic in the Google Groups Clojure group. To unsubscribe from this topic, visit https://groups.google.com/d/ topic/clojure/mR1IBJ_OomY/unsubscribe. To unsubscribe from this group and all its topics, send an email to clojure+u...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to a topic in the Google Groups Clojure group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/clojure/mR1IBJ_OomY/unsubscribe. To unsubscribe from this group and all its topics, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [Video] Game development in Clojure (with play-clj)
Kris, the entities are automatically converted back into a vector by play-clj after being returned by a given function. Can you elaborate on what problem you believe is occurring when you don't change it back to a vector? On Tuesday, April 15, 2014 5:26:07 PM UTC-4, Kris Calabio wrote: James, I have a question. I see this pattern a lot in the sample code and in your code as well, for example: (defn- move-player [entities] (- entities (map (fn [entity] (- entity (update-player-position) (update-hit-box (remove-touched-apples))) When the entities vector gets threaded through the map function, it comes out as a LazySeq. But don't we want to keep the entities as a vector? This seems to be causing problems in my own code, and the only way to keep it working is to change it back to a vector every time I do this, which seems inelegant. Just wondering if I'm missing something. -Kris On Sun, Apr 13, 2014 at 3:13 PM, James Trunk james...@gmail.comjavascript: wrote: There's a link to a gist of core.cljhttps://gist.github.com/Misophistful/9892203in the video's description. Cheers, James On Monday, April 14, 2014 12:08:16 AM UTC+2, Kris Calabio wrote: Actually, I thought it would be even more helpful if you had the source code available (for searching/skimming). Is that somewhere online? -Kris On Sun, Apr 13, 2014 at 2:47 PM, James Trunk james...@gmail.comwrote: Hi Kris, Thanks for your comment, and I'm very glad that you found the video helpful. I started doing screencasts because I realised that I learn a new concept fastest by watching someone else doing/explaining it - and I figured I might not be the only one. Saying that, I know screencasts aren't for everyone, and they have a few drawbacks compared to text (harder to search, skim, or repeat sections). So positive comment like yours remind me that I'm not the only auditory/visual learner around here, and inspire me to keep going. Thanks! James On Saturday, April 12, 2014 11:28:29 PM UTC+2, Kris Calabio wrote: Great video! I've looked through Zach's examples, and even started coding a game myself. But your screencast helped me have a better understanding of some of the concepts and code that I was having trouble understanding just by looking at the example games. Thanks! -Kris On Thursday, March 27, 2014 10:07:21 AM UTC-7, James Trunk wrote: Hi everyone, I thought some of you might be interested to watch my screencast about game development in Clojure with play-cljhttps://www.youtube.com/watch?v=9ilUe7Re-RA . Cheers, James -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to a topic in the Google Groups Clojure group. To unsubscribe from this topic, visit https://groups.google.com/d/ topic/clojure/mR1IBJ_OomY/unsubscribe. To unsubscribe from this group and all its topics, send an email to clojure+u...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.comjavascript: Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com javascript: For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to a topic in the Google Groups Clojure group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/clojure/mR1IBJ_OomY/unsubscribe. To unsubscribe from this group and all its topics, send an email to clojure+u...@googlegroups.com javascript:. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit
Re: [Video] Game development in Clojure (with play-clj)
In one of the callback functions in the defscreen I have a pipeline of functions that do something to the entities vector and return the resulting entities. I do something like this: (- entities (process-entities01) (process-entities02) (map (fn [entity] (- entity (process-entity01) (process-entity02))) (process-entities03)) And that does not work, because each of the 'process-entities' functions are written in a way that expect a vector as input. Likewise, they each output a LazySeq unless I convert them back to a vector before returning. But I can't do that for the map function in the pipeline. But this does work: (- entities (process-entities01) vec (process-entities02) vec (map (fn [entity] (- entity (process-entity01) (process-entity02))) vec (process-entities03) vec) On Tue, Apr 15, 2014 at 3:34 PM, Zach Oakes zsoa...@gmail.com wrote: Kris, the entities are automatically converted back into a vector by play-clj after being returned by a given function. Can you elaborate on what problem you believe is occurring when you don't change it back to a vector? On Tuesday, April 15, 2014 5:26:07 PM UTC-4, Kris Calabio wrote: James, I have a question. I see this pattern a lot in the sample code and in your code as well, for example: (defn- move-player [entities] (- entities (map (fn [entity] (- entity (update-player-position) (update-hit-box (remove-touched-apples))) When the entities vector gets threaded through the map function, it comes out as a LazySeq. But don't we want to keep the entities as a vector? This seems to be causing problems in my own code, and the only way to keep it working is to change it back to a vector every time I do this, which seems inelegant. Just wondering if I'm missing something. -Kris On Sun, Apr 13, 2014 at 3:13 PM, James Trunk james...@gmail.com wrote: There's a link to a gist of core.cljhttps://gist.github.com/Misophistful/9892203in the video's description. Cheers, James On Monday, April 14, 2014 12:08:16 AM UTC+2, Kris Calabio wrote: Actually, I thought it would be even more helpful if you had the source code available (for searching/skimming). Is that somewhere online? -Kris On Sun, Apr 13, 2014 at 2:47 PM, James Trunk james...@gmail.comwrote: Hi Kris, Thanks for your comment, and I'm very glad that you found the video helpful. I started doing screencasts because I realised that I learn a new concept fastest by watching someone else doing/explaining it - and I figured I might not be the only one. Saying that, I know screencasts aren't for everyone, and they have a few drawbacks compared to text (harder to search, skim, or repeat sections). So positive comment like yours remind me that I'm not the only auditory/visual learner around here, and inspire me to keep going. Thanks! James On Saturday, April 12, 2014 11:28:29 PM UTC+2, Kris Calabio wrote: Great video! I've looked through Zach's examples, and even started coding a game myself. But your screencast helped me have a better understanding of some of the concepts and code that I was having trouble understanding just by looking at the example games. Thanks! -Kris On Thursday, March 27, 2014 10:07:21 AM UTC-7, James Trunk wrote: Hi everyone, I thought some of you might be interested to watch my screencast about game development in Clojure with play-cljhttps://www.youtube.com/watch?v=9ilUe7Re-RA . Cheers, James -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to a topic in the Google Groups Clojure group. To unsubscribe from this topic, visit https://groups.google.com/d/to pic/clojure/mR1IBJ_OomY/unsubscribe. To unsubscribe from this group and all its topics, send an email to clojure+u...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to a topic in the Google Groups Clojure group. To unsubscribe from this topic, visit
Re: [Video] Game development in Clojure (with play-clj)
I see. If your code requires a vector, I think you will have to coerce the list each time as you are doing. Out of curiosity, what are you doing that makes this necessary? Are you using something like get-in? On Tuesday, April 15, 2014 7:11:56 PM UTC-4, Kris Calabio wrote: In one of the callback functions in the defscreen I have a pipeline of functions that do something to the entities vector and return the resulting entities. I do something like this: (- entities (process-entities01) (process-entities02) (map (fn [entity] (- entity (process-entity01) (process-entity02))) (process-entities03)) And that does not work, because each of the 'process-entities' functions are written in a way that expect a vector as input. Likewise, they each output a LazySeq unless I convert them back to a vector before returning. But I can't do that for the map function in the pipeline. But this does work: (- entities (process-entities01) vec (process-entities02) vec (map (fn [entity] (- entity (process-entity01) (process-entity02))) vec (process-entities03) vec) On Tue, Apr 15, 2014 at 3:34 PM, Zach Oakes zso...@gmail.comjavascript: wrote: Kris, the entities are automatically converted back into a vector by play-clj after being returned by a given function. Can you elaborate on what problem you believe is occurring when you don't change it back to a vector? On Tuesday, April 15, 2014 5:26:07 PM UTC-4, Kris Calabio wrote: James, I have a question. I see this pattern a lot in the sample code and in your code as well, for example: (defn- move-player [entities] (- entities (map (fn [entity] (- entity (update-player-position) (update-hit-box (remove-touched-apples))) When the entities vector gets threaded through the map function, it comes out as a LazySeq. But don't we want to keep the entities as a vector? This seems to be causing problems in my own code, and the only way to keep it working is to change it back to a vector every time I do this, which seems inelegant. Just wondering if I'm missing something. -Kris On Sun, Apr 13, 2014 at 3:13 PM, James Trunk james...@gmail.com wrote: There's a link to a gist of core.cljhttps://gist.github.com/Misophistful/9892203in the video's description. Cheers, James On Monday, April 14, 2014 12:08:16 AM UTC+2, Kris Calabio wrote: Actually, I thought it would be even more helpful if you had the source code available (for searching/skimming). Is that somewhere online? -Kris On Sun, Apr 13, 2014 at 2:47 PM, James Trunk james...@gmail.comwrote: Hi Kris, Thanks for your comment, and I'm very glad that you found the video helpful. I started doing screencasts because I realised that I learn a new concept fastest by watching someone else doing/explaining it - and I figured I might not be the only one. Saying that, I know screencasts aren't for everyone, and they have a few drawbacks compared to text (harder to search, skim, or repeat sections). So positive comment like yours remind me that I'm not the only auditory/visual learner around here, and inspire me to keep going. Thanks! James On Saturday, April 12, 2014 11:28:29 PM UTC+2, Kris Calabio wrote: Great video! I've looked through Zach's examples, and even started coding a game myself. But your screencast helped me have a better understanding of some of the concepts and code that I was having trouble understanding just by looking at the example games. Thanks! -Kris On Thursday, March 27, 2014 10:07:21 AM UTC-7, James Trunk wrote: Hi everyone, I thought some of you might be interested to watch my screencast about game development in Clojure with play-cljhttps://www.youtube.com/watch?v=9ilUe7Re-RA . Cheers, James -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to a topic in the Google Groups Clojure group. To unsubscribe from this topic, visit https://groups.google.com/d/to pic/clojure/mR1IBJ_OomY/unsubscribe. To unsubscribe from this group and all its topics, send an email to clojure+u...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.com Note that posts from new members are moderated - please be
Re: [Video] Game development in Clojure (with play-clj)
I'm not exactly sure, but I think it's the use of 'conj'. My entities get out of order if they are not vectors. All this might not matter though, because I've started rewriting my game from scratch since I'm using way too many mutable atoms than is necessary. James' screencast cleared a lot of things up for me, and I have a better understanding about how play-clj works. But just to clarify, when exactly does play-clj convert the entities back into a vector? Is it when the callback functions of the screen return? On Tue, Apr 15, 2014 at 4:37 PM, Zach Oakes zsoa...@gmail.com wrote: I see. If your code requires a vector, I think you will have to coerce the list each time as you are doing. Out of curiosity, what are you doing that makes this necessary? Are you using something like get-in? On Tuesday, April 15, 2014 7:11:56 PM UTC-4, Kris Calabio wrote: In one of the callback functions in the defscreen I have a pipeline of functions that do something to the entities vector and return the resulting entities. I do something like this: (- entities (process-entities01) (process-entities02) (map (fn [entity] (- entity (process-entity01) (process-entity02))) (process-entities03)) And that does not work, because each of the 'process-entities' functions are written in a way that expect a vector as input. Likewise, they each output a LazySeq unless I convert them back to a vector before returning. But I can't do that for the map function in the pipeline. But this does work: (- entities (process-entities01) vec (process-entities02) vec (map (fn [entity] (- entity (process-entity01) (process-entity02))) vec (process-entities03) vec) On Tue, Apr 15, 2014 at 3:34 PM, Zach Oakes zso...@gmail.com wrote: Kris, the entities are automatically converted back into a vector by play-clj after being returned by a given function. Can you elaborate on what problem you believe is occurring when you don't change it back to a vector? On Tuesday, April 15, 2014 5:26:07 PM UTC-4, Kris Calabio wrote: James, I have a question. I see this pattern a lot in the sample code and in your code as well, for example: (defn- move-player [entities] (- entities (map (fn [entity] (- entity (update-player-position) (update-hit-box (remove-touched-apples))) When the entities vector gets threaded through the map function, it comes out as a LazySeq. But don't we want to keep the entities as a vector? This seems to be causing problems in my own code, and the only way to keep it working is to change it back to a vector every time I do this, which seems inelegant. Just wondering if I'm missing something. -Kris On Sun, Apr 13, 2014 at 3:13 PM, James Trunk james...@gmail.comwrote: There's a link to a gist of core.cljhttps://gist.github.com/Misophistful/9892203in the video's description. Cheers, James On Monday, April 14, 2014 12:08:16 AM UTC+2, Kris Calabio wrote: Actually, I thought it would be even more helpful if you had the source code available (for searching/skimming). Is that somewhere online? -Kris On Sun, Apr 13, 2014 at 2:47 PM, James Trunk james...@gmail.comwrote: Hi Kris, Thanks for your comment, and I'm very glad that you found the video helpful. I started doing screencasts because I realised that I learn a new concept fastest by watching someone else doing/explaining it - and I figured I might not be the only one. Saying that, I know screencasts aren't for everyone, and they have a few drawbacks compared to text (harder to search, skim, or repeat sections). So positive comment like yours remind me that I'm not the only auditory/visual learner around here, and inspire me to keep going. Thanks! James On Saturday, April 12, 2014 11:28:29 PM UTC+2, Kris Calabio wrote: Great video! I've looked through Zach's examples, and even started coding a game myself. But your screencast helped me have a better understanding of some of the concepts and code that I was having trouble understanding just by looking at the example games. Thanks! -Kris On Thursday, March 27, 2014 10:07:21 AM UTC-7, James Trunk wrote: Hi everyone, I thought some of you might be interested to watch my screencast about game development in Clojure with play-cljhttps://www.youtube.com/watch?v=9ilUe7Re-RA . Cheers, James -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+u...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are
Re: Unexpected core.async timeout behaviour
Dredging this back up, you've read the scenario properly. Timers are coalesced a particular resolution. Use cases needing more than 1024 active handles on a channel can use a mult. For example, if you had to timeout every request at a same time exactly 5 minutes in the future, (mult (timeout 30)) and then give every request a fresh tap of that. The fixed 100 case I think you're getting lucky, whereas the random window you're getting unfavorable coalescing, which seems counterintuitive. On Friday, March 28, 2014 9:52:47 AM UTC-4, Peter Taoussanis wrote: One thing I'm not clear on: if I've understood your explanation correctly, I would expect the 100ms timeout to produce this error _more_ (not less) often. So can I just confirm some things here? 1. `async/timeout` calls can (always?) get cached to the nearest TIMEOUT_RESOLUTION_MS. 2. In this tight loop example, that means that `!` is sometimes getting called against the same (cached) timeout channel. 3. It's happening sufficiently often (do to the high loop count+speed) to overflow the [unbuffered] timeout channel's implicit take buffer. Is that all right? If so, why isn't the fixed `(async/timeout 100)` channel producing the same (or worse) behaviour? Is something preventing it from being cached in the same way? -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Annotations on gen-class :state
That was what I figured. However Clojure currently makes certain kinds of interop extremely painful, which makes it hard to integrate into existing frameworks. I'm not proposing anything that would encourage concrete derivation in pure Clojure programs, but I think that facilitating that interop is a worthwhile goal, especially since it's an explicit design goal of Clojure to expose the host where it's pragmatic to do so. Don't make me maintain a fork :-) On 16 April 2014 00:48, Alex Miller a...@puredanger.com wrote: I think not too favorably. :) See http://clojure.org/datatypes where Rich says concrete derivation is bad. I do not think he would be interested in adding anything to Clojure that included concrete derivation. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [Video] Game development in Clojure (with play-clj)
Note that you could use mapv, to perform the map but return a vector (filterv was also added at the same time). On 16 April 2014 11:46, Kris Calabio kriscala...@gmail.com wrote: I'm not exactly sure, but I think it's the use of 'conj'. My entities get out of order if they are not vectors. All this might not matter though, because I've started rewriting my game from scratch since I'm using way too many mutable atoms than is necessary. James' screencast cleared a lot of things up for me, and I have a better understanding about how play-clj works. But just to clarify, when exactly does play-clj convert the entities back into a vector? Is it when the callback functions of the screen return? On Tue, Apr 15, 2014 at 4:37 PM, Zach Oakes zsoa...@gmail.com wrote: I see. If your code requires a vector, I think you will have to coerce the list each time as you are doing. Out of curiosity, what are you doing that makes this necessary? Are you using something like get-in? On Tuesday, April 15, 2014 7:11:56 PM UTC-4, Kris Calabio wrote: In one of the callback functions in the defscreen I have a pipeline of functions that do something to the entities vector and return the resulting entities. I do something like this: (- entities (process-entities01) (process-entities02) (map (fn [entity] (- entity (process-entity01) (process-entity02))) (process-entities03)) And that does not work, because each of the 'process-entities' functions are written in a way that expect a vector as input. Likewise, they each output a LazySeq unless I convert them back to a vector before returning. But I can't do that for the map function in the pipeline. But this does work: (- entities (process-entities01) vec (process-entities02) vec (map (fn [entity] (- entity (process-entity01) (process-entity02))) vec (process-entities03) vec) On Tue, Apr 15, 2014 at 3:34 PM, Zach Oakes zso...@gmail.com wrote: Kris, the entities are automatically converted back into a vector by play-clj after being returned by a given function. Can you elaborate on what problem you believe is occurring when you don't change it back to a vector? On Tuesday, April 15, 2014 5:26:07 PM UTC-4, Kris Calabio wrote: James, I have a question. I see this pattern a lot in the sample code and in your code as well, for example: (defn- move-player [entities] (- entities (map (fn [entity] (- entity (update-player-position) (update-hit-box (remove-touched-apples))) When the entities vector gets threaded through the map function, it comes out as a LazySeq. But don't we want to keep the entities as a vector? This seems to be causing problems in my own code, and the only way to keep it working is to change it back to a vector every time I do this, which seems inelegant. Just wondering if I'm missing something. -Kris On Sun, Apr 13, 2014 at 3:13 PM, James Trunk james...@gmail.comwrote: There's a link to a gist of core.cljhttps://gist.github.com/Misophistful/9892203in the video's description. Cheers, James On Monday, April 14, 2014 12:08:16 AM UTC+2, Kris Calabio wrote: Actually, I thought it would be even more helpful if you had the source code available (for searching/skimming). Is that somewhere online? -Kris On Sun, Apr 13, 2014 at 2:47 PM, James Trunk james...@gmail.comwrote: Hi Kris, Thanks for your comment, and I'm very glad that you found the video helpful. I started doing screencasts because I realised that I learn a new concept fastest by watching someone else doing/explaining it - and I figured I might not be the only one. Saying that, I know screencasts aren't for everyone, and they have a few drawbacks compared to text (harder to search, skim, or repeat sections). So positive comment like yours remind me that I'm not the only auditory/visual learner around here, and inspire me to keep going. Thanks! James On Saturday, April 12, 2014 11:28:29 PM UTC+2, Kris Calabio wrote: Great video! I've looked through Zach's examples, and even started coding a game myself. But your screencast helped me have a better understanding of some of the concepts and code that I was having trouble understanding just by looking at the example games. Thanks! -Kris On Thursday, March 27, 2014 10:07:21 AM UTC-7, James Trunk wrote: Hi everyone, I thought some of you might be interested to watch my screencast about game development in Clojure with play-cljhttps://www.youtube.com/watch?v=9ilUe7Re-RA . Cheers, James -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clo...@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from
Re: [Video] Game development in Clojure (with play-clj)
Thanks, Colin! I wasn't aware of mapv. On Tue, Apr 15, 2014 at 6:08 PM, Colin Fleming colin.mailingl...@gmail.comwrote: Note that you could use mapv, to perform the map but return a vector (filterv was also added at the same time). On 16 April 2014 11:46, Kris Calabio kriscala...@gmail.com wrote: I'm not exactly sure, but I think it's the use of 'conj'. My entities get out of order if they are not vectors. All this might not matter though, because I've started rewriting my game from scratch since I'm using way too many mutable atoms than is necessary. James' screencast cleared a lot of things up for me, and I have a better understanding about how play-clj works. But just to clarify, when exactly does play-clj convert the entities back into a vector? Is it when the callback functions of the screen return? On Tue, Apr 15, 2014 at 4:37 PM, Zach Oakes zsoa...@gmail.com wrote: I see. If your code requires a vector, I think you will have to coerce the list each time as you are doing. Out of curiosity, what are you doing that makes this necessary? Are you using something like get-in? On Tuesday, April 15, 2014 7:11:56 PM UTC-4, Kris Calabio wrote: In one of the callback functions in the defscreen I have a pipeline of functions that do something to the entities vector and return the resulting entities. I do something like this: (- entities (process-entities01) (process-entities02) (map (fn [entity] (- entity (process-entity01) (process-entity02))) (process-entities03)) And that does not work, because each of the 'process-entities' functions are written in a way that expect a vector as input. Likewise, they each output a LazySeq unless I convert them back to a vector before returning. But I can't do that for the map function in the pipeline. But this does work: (- entities (process-entities01) vec (process-entities02) vec (map (fn [entity] (- entity (process-entity01) (process-entity02))) vec (process-entities03) vec) On Tue, Apr 15, 2014 at 3:34 PM, Zach Oakes zso...@gmail.com wrote: Kris, the entities are automatically converted back into a vector by play-clj after being returned by a given function. Can you elaborate on what problem you believe is occurring when you don't change it back to a vector? On Tuesday, April 15, 2014 5:26:07 PM UTC-4, Kris Calabio wrote: James, I have a question. I see this pattern a lot in the sample code and in your code as well, for example: (defn- move-player [entities] (- entities (map (fn [entity] (- entity (update-player-position) (update-hit-box (remove-touched-apples))) When the entities vector gets threaded through the map function, it comes out as a LazySeq. But don't we want to keep the entities as a vector? This seems to be causing problems in my own code, and the only way to keep it working is to change it back to a vector every time I do this, which seems inelegant. Just wondering if I'm missing something. -Kris On Sun, Apr 13, 2014 at 3:13 PM, James Trunk james...@gmail.comwrote: There's a link to a gist of core.cljhttps://gist.github.com/Misophistful/9892203in the video's description. Cheers, James On Monday, April 14, 2014 12:08:16 AM UTC+2, Kris Calabio wrote: Actually, I thought it would be even more helpful if you had the source code available (for searching/skimming). Is that somewhere online? -Kris On Sun, Apr 13, 2014 at 2:47 PM, James Trunk james...@gmail.comwrote: Hi Kris, Thanks for your comment, and I'm very glad that you found the video helpful. I started doing screencasts because I realised that I learn a new concept fastest by watching someone else doing/explaining it - and I figured I might not be the only one. Saying that, I know screencasts aren't for everyone, and they have a few drawbacks compared to text (harder to search, skim, or repeat sections). So positive comment like yours remind me that I'm not the only auditory/visual learner around here, and inspire me to keep going. Thanks! James On Saturday, April 12, 2014 11:28:29 PM UTC+2, Kris Calabio wrote: Great video! I've looked through Zach's examples, and even started coding a game myself. But your screencast helped me have a better understanding of some of the concepts and code that I was having trouble understanding just by looking at the example games. Thanks! -Kris On Thursday, March 27, 2014 10:07:21 AM UTC-7, James Trunk wrote: Hi everyone, I thought some of you might be interested to watch my screencast about game development in Clojure with play-cljhttps://www.youtube.com/watch?v=9ilUe7Re-RA . Cheers, James -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to
Re: Helping newcomers get involved in Clojure projects
Re: tagging issues, we should probably just ask clojure library authors to add their projects to OpenHatch's issue indexers. They have them for Github issues and JIRA, which covers clojure/core (JIRA) and *most* current open source libs (Github). That way, each individual project maintainer could choose the tags they want to signify newcomer (if I'm reading OpenHatch's docs correctly). Re: CodeAcademy-type sites, I think this might take a little work: CodeAcademy translates exceptions *or incorrect answers* into beginner-readable suggestions. Considering they do this even for non-code blows up errors, they must make a list of common mistakes and the output generated by those mistakes (which to do correctly would require lots of user testing). --Leif On Saturday, January 25, 2014 1:54:10 PM UTC-5, Bridget wrote: OpenHatch has this great initiativehttps://openhatch.org/wiki/Bug_trackersfor encouraging newcomers to get involved with open source projects. You tag some issues in your bug tracker as newcomer or easy. This provides a gentle path into contributing. There is some work involved with this. You have to do the tagging, and there needs to be some capacity in your project for some mentoring. Leiningen is doing this http://leiningen.org/ already with newbie tagged issues, which is awesome. Are there any other Clojure projects that are doing this? Would you like to do this with your project? If so, I can try to help. I have been spending a lot of time thinking about the Clojure newcomer perspective lately, and I'd like to work on some things that help smooth that path. Bridget -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Clojure Office Hours
@Jakub: Thanks for your kind words. I'm definitely no industry hero, but I hope Clojure devs of all levels start having more pair programming fun. @Tim: Clojurescript UI programming being *way* out of my comfort zone, I learned quite a lot from you yesterday. So thank *you*. @Everyone: To clarify / reiterate: You do *not* need a plan, a project, or a specific problem. If you want to work through Project Euler, 4clojure, clojure-koans, the ClojureBridge materials, some other clojure tutorial, or just play it by ear, I am happy to try it out. --Leif On Tuesday, April 15, 2014 8:00:17 AM UTC-4, frye wrote: I just came from an office hours session, yesterday with Leif. This is good stuff guys, and a great way to learn and meet with other developers. Highly recommended. Thanks Leif Tim Washington Interruptsoftware.com http://interruptsoftware.com On Tue, Apr 15, 2014 at 5:12 AM, Jakub Holy jakub...@iterate.nojavascript: wrote: Hi Leif, This is a great activity, thank you for contributing to the community this way! Do not be surprise and discouraged by the fact that the interest seems low. I have a similar experience - in my company we can consult with an industry hero yet people use the opportunity seldom, presumably because of multiple factors: they (wrongly) don't feel that they do not have something important/interesting enough to bother him, they are little scared of talking to and exposing themselves and their work to this experienced guy, and might find it difficult to explain their challenge to an outsider and get an advice within the limited time scope. On the other hand, those who dare to use the opportunity benefit from it greatly. Good luck, Jakub On Friday, April 11, 2014 4:13:18 AM UTC+2, Leif wrote: Hmm... less interest than I'd expected, given recent posts. Maybe I should rename the thread to Free Clojure Consulting / Tutoring. Tht's not spammy. FYI, all bookings are automatically confirmed, so don't fret if I don't instantly respond. @Tim: Sounds good! Of course, now I'll have to take some time this weekend and try to actually understand Om. :) (or maybe ?o_0? ) --Leif On Thursday, April 10, 2014 9:56:37 AM UTC-4, frye wrote: Sounds great. I just sent a request. Tim Washington Interruptsoftware.com http://interruptsoftware.com On Thu, Apr 10, 2014 at 9:43 AM, Colin Fleming colin.ma...@gmail.comwrote: Hi Leif, This sounds like a very interesting project, please report back and let us know how it went! I'd be very interested to know. Cheers, Colin On 11 April 2014 00:53, Leif leif.p...@gmail.com wrote: Hi, everybody. Inspired by the SF Bay Area clojure group, ClojureBridge, and the great talks on community education from Clojure/West on youtube, I've decided to try holding my own personal Clojure office hours (online). I am personally of the opinion that face-to-face interaction is superior, so you may want to get your local user group to follow the Bay Area's lead. But if you don't agree, or you don't live near such a user group, then read on. Borrowed from the Bay Area's posting: This is a [2-person] meetup for anyone who is working on a Clojure project and wants to talk over their code or approach with an experienced Clojure developer. Projects of all levels and complexity are welcome, anyone just getting started in Clojure is encouraged to come in and talk through their first Euler or 4Clojure problems. Disclaimer: This community being what it is, there may be projects of too high a complexity for me, but I'll give it a shot. I'm going to try a test run of this for two weeks, and then I'll have to see what state I'm in (mentally and geographically). If interested, you can book at this link: https://leifpoorman.youcanbook.me/ Note: all the times are evening, US Eastern. That pretty much limits it to the western hemisphere and any east asian friends that want to do some morning hacking. Eastern hemisphere friends, make noise on this thread, and maybe some brave European/Asian clojure developer will try something similar. Cheers, Leif -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: Clojure Office Hours
Leif, thanks for the great session today. Not only did I get a jump start on my next 4Clojure problems, but I learned some emacs as well! Very enjoyable, and I look forward to next week's session. THANK YOU! All, if you're trying to get a jumpstart on Clojure, I highly recommend Leif's office hours. -Marcus On Apr 15, 2014, at 6:50 PM, Leif leif.poor...@gmail.com wrote: @Jakub: Thanks for your kind words. I'm definitely no industry hero, but I hope Clojure devs of all levels start having more pair programming fun. @Tim: Clojurescript UI programming being way out of my comfort zone, I learned quite a lot from you yesterday. So thank you. @Everyone: To clarify / reiterate: You do not need a plan, a project, or a specific problem. If you want to work through Project Euler, 4clojure, clojure-koans, the ClojureBridge materials, some other clojure tutorial, or just play it by ear, I am happy to try it out. --Leif On Tuesday, April 15, 2014 8:00:17 AM UTC-4, frye wrote: I just came from an office hours session, yesterday with Leif. This is good stuff guys, and a great way to learn and meet with other developers. Highly recommended. Thanks Leif Tim Washington Interruptsoftware.com On Tue, Apr 15, 2014 at 5:12 AM, Jakub Holy jakub...@iterate.no wrote: Hi Leif, This is a great activity, thank you for contributing to the community this way! Do not be surprise and discouraged by the fact that the interest seems low. I have a similar experience - in my company we can consult with an industry hero yet people use the opportunity seldom, presumably because of multiple factors: they (wrongly) don't feel that they do not have something important/interesting enough to bother him, they are little scared of talking to and exposing themselves and their work to this experienced guy, and might find it difficult to explain their challenge to an outsider and get an advice within the limited time scope. On the other hand, those who dare to use the opportunity benefit from it greatly. Good luck, Jakub On Friday, April 11, 2014 4:13:18 AM UTC+2, Leif wrote: Hmm... less interest than I'd expected, given recent posts. Maybe I should rename the thread to Free Clojure Consulting / Tutoring. Tht's not spammy. FYI, all bookings are automatically confirmed, so don't fret if I don't instantly respond. @Tim: Sounds good! Of course, now I'll have to take some time this weekend and try to actually understand Om. :) (or maybe ?o_0? ) --Leif On Thursday, April 10, 2014 9:56:37 AM UTC-4, frye wrote: Sounds great. I just sent a request. Tim Washington Interruptsoftware.com On Thu, Apr 10, 2014 at 9:43 AM, Colin Fleming colin.ma...@gmail.com wrote: Hi Leif, This sounds like a very interesting project, please report back and let us know how it went! I'd be very interested to know. Cheers, Colin On 11 April 2014 00:53, Leif leif.p...@gmail.com wrote: Hi, everybody. Inspired by the SF Bay Area clojure group, ClojureBridge, and the great talks on community education from Clojure/West on youtube, I've decided to try holding my own personal Clojure office hours (online). I am personally of the opinion that face-to-face interaction is superior, so you may want to get your local user group to follow the Bay Area's lead. But if you don't agree, or you don't live near such a user group, then read on. Borrowed from the Bay Area's posting: This is a [2-person] meetup for anyone who is working on a Clojure project and wants to talk over their code or approach with an experienced Clojure developer. Projects of all levels and complexity are welcome, anyone just getting started in Clojure is encouraged to come in and talk through their first Euler or 4Clojure problems. Disclaimer: This community being what it is, there may be projects of too high a complexity for me, but I'll give it a shot. I'm going to try a test run of this for two weeks, and then I'll have to see what state I'm in (mentally and geographically). If interested, you can book at this link: https://leifpoorman.youcanbook.me/ Note: all the times are evening, US Eastern. That pretty much limits it to the western hemisphere and any east asian friends that want to do some morning hacking. Eastern hemisphere friends, make noise on this thread, and maybe some brave European/Asian clojure developer will try something similar. Cheers, Leif -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message
Re: Helping newcomers get involved in Clojure projects
That's interesting. I think such a database of common errors would be an extremely useful resource, not only for learning but also for development of linting tools (I think this is more or less what Dynalint does right now) and other tools. For example, I'd love to be able to flag these types of errors and provide suggestions to the user within Cursive about what might be the problem and how they might approach it - currently incomprehensible error messages is one of Clojure's huge weak points IMO. On 16 April 2014 13:23, Leif leif.poor...@gmail.com wrote: Re: tagging issues, we should probably just ask clojure library authors to add their projects to OpenHatch's issue indexers. They have them for Github issues and JIRA, which covers clojure/core (JIRA) and *most* current open source libs (Github). That way, each individual project maintainer could choose the tags they want to signify newcomer (if I'm reading OpenHatch's docs correctly). Re: CodeAcademy-type sites, I think this might take a little work: CodeAcademy translates exceptions *or incorrect answers* into beginner-readable suggestions. Considering they do this even for non-code blows up errors, they must make a list of common mistakes and the output generated by those mistakes (which to do correctly would require lots of user testing). --Leif On Saturday, January 25, 2014 1:54:10 PM UTC-5, Bridget wrote: OpenHatch has this great initiativehttps://openhatch.org/wiki/Bug_trackersfor encouraging newcomers to get involved with open source projects. You tag some issues in your bug tracker as newcomer or easy. This provides a gentle path into contributing. There is some work involved with this. You have to do the tagging, and there needs to be some capacity in your project for some mentoring. Leiningen is doing this http://leiningen.org/ already with newbie tagged issues, which is awesome. Are there any other Clojure projects that are doing this? Would you like to do this with your project? If so, I can try to help. I have been spending a lot of time thinking about the Clojure newcomer perspective lately, and I'd like to work on some things that help smooth that path. Bridget -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
multiple browsers, live.js - repl
Hi, Okay. I think I have finally reached the limits of live.js, and now want an interactive browser repl + being able to push portions of code (rather than reloading the entire page). I have a simple question though: * I'm developing a _distribued_ app * So I can't test it unless I have 2+ browsers running. * With brepl, when I modify my *.cljs files, is it possible to push the changes to _two_ browsers simultaneojsly? Thanks! -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [ANN] Gorilla REPL 0.2.0 - all new extensible renderer
Is there a way to rerun the whole notebook top to bottom with a hotkey? On Wed, Apr 16, 2014 at 3:59 PM, SteveSuehs skelter@gmail.com wrote: I'm running Leiningen 2.1.2 on Java 1.7.0_45 Java HotSpot(TM) 64-Bit Server VM Upgrading now...version 2.3.4 Removed tools.nrepl from project.clj $ lein gorilla Gorilla-REPL. Started nREPL server on port 50235 Running at http://localhost:8990/worksheet.html . Ctrl+C to exit. Looking good! On Tuesday, April 15, 2014 10:03:33 AM UTC-5, Jony Hudson wrote: Thanks for the kind words chaps - glad you like it! @Steve Are you sure your Leiningen is up to date? I've only seen this problem when accidentally trying to run Gorilla with Lein 1.7 (as Debian seems to have that version as its default install). @Andrew Probably not what you're looking for, but there should be a renderer for Loom graphs soon, which shells out to GraphViz to do the heavy lifting. Take a look at this PR: https://github.com/aysylu/loom/pull/20. Even if your data doesn't fit with loom then it might be useful for an idea. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to a topic in the Google Groups Clojure group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/clojure/a1FsteQXhrQ/unsubscribe. To unsubscribe from this group and all its topics, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
