Re: Clojure for Beginners eBook
On May 1, 2013, at 17:40, Asim Jalis wrote: Any thoughts or feedback would be great. I'd be happy to see a section on Just Enough Java, for folks who don't have a Java background. You mqay also want to take a look at my (WIP!) wiki pages on Key Concepts in Clojure: http://wiki.cfcl.com/bin/view/Projects/Clojure/Key/WebHome -r -- http://www.cfcl.com/rdmRich Morin http://www.cfcl.com/rdm/resume r...@cfcl.com http://www.cfcl.com/rdm/weblog +1 650-873-7841 Software system design, development, and documentation -- -- 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/groups/opt_out.
[ANN] bleach 0.0.11
bleach: whitens unsightly code! When you bleach your code, it continues to work as before, only now it looks like: (use 'bleach.core) #bleach/ed Find it here: https://github.com/dlowe/bleach Enjoy :) David Lowe -- -- 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/groups/opt_out.
Re: emacs - how to wean me off the family of Java IDEs
On 5/1/2013 5:46 PM, James Thornton wrote: ... Before I realized my bad habit, I would contort my left hand to hit Ctrl Alt x -- this feels awkward and if you do it enough times over the years the repetitive stress builds up. A better way is to use both hands. This may seem obvious to those who did it right from the beginning, but if you start off down the wrong path, it can be a real pain. To execute C-M-x using both hands, simultaneously hold down the Ctrl key with your left pinky while holding down the Alt key with your right thumb, and hit x with your left index finger. Doing it this way feels natural and smooth. Now I almost always use my right thumb for Meta/Alt, and once I realized this, the Emacs command combinations made much more sense. I spent years with the beginnings of carpal tunnel syndrome and tried all sorts of changes, including using both hands. But, finally, I started using viper mode (vi key bindings) and I have had no carpal tunnel symptoms for 10 years. Kendall -- -- 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/groups/opt_out.
Re: Clojure Login form error: java.lang.ClassCastException: clojure.lang.Var$Unbound cannot be cast to clojure.lang.Atom
Is this serious? No one knows how to create a login form in Compojure? I'm seriously confused. I can create accounts, but I can't get the login part to work. What could I possibly be doing wrong? Is there anything in my code that indicates something wrong? Is there anything I could show that could reveal the problem? -- -- 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/groups/opt_out.
Re: [ANN] Prismatic's Plumbing/Graph 0.1.0 is released with huge performance improvements
Hi, First all congratulations to the new release! Looking at the change log, I'm not sure I understand the following: Explicit output-schema metadata on a fnk is taken as gold, rather than being merged with explicit data by analyzing the fnk body, and must be explicit rather than a spec Thx Sent from my phone On May 1, 2013 8:46 PM, Jason Wolfe ja...@w01fe.com wrote: Version 0.1.0 of Prismatic's Plumbing/Graph has just been released. The biggest change is backwards-compatible performance improvements of up to 40x for eager compilation, brining Graph to within 20% or so of hand-coded performance for trivial node functions. This was work done by Leon Barrett on a 'sprintbatical' from the Climate Corp, and he's written a great blog post about the update [1]. There are also a handful of small changes and improvements described in the changelog [2]. We've also created a mailing list for Plumbing/Graph [3], so feel free to ask/answer questions, discuss feature requests/bugs, and generally talk about how you are or would like to use Plumbing/Graph there. Cheers, Jason [1] http://blog.getprismatic.com/blog/2013/5/1/graph-faster-abstractions-for-structured-computation [2] https://github.com/Prismatic/plumbing/blob/v0.1.0/CHANGELOG.md [3] https://groups.google.com/forum/#!forum/prismatic-plumbing -- -- 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/groups/opt_out. -- -- 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/groups/opt_out.
Re: [ANN] Prismatic's Plumbing/Graph 0.1.0 is released with huge performance improvements
Yes, I suppose that's not very clear. Fnk attempts to guess the output schema of your function by looking at the body -- if the return value has literal map structure, this is automatically taken as the output schema. Since this analysis is fragile (maps are created programatically, within a let, by a delegate fn, etc), you can also provide explicit ^:output-schema metadata on the argument vector of the fnk. The previous version of plumbing attempted to be smart and 'merge' these two sources of schema data. Your explicit schema could provide additional details about structure, but if it contradicted the literal map structure an exception was thrown. Unfortunately, this required calling 'eval' on the explicit output schema so that it could be analyzed at compile time, in the case that it was itself not literal. We decided that this was a bad idea, so now when you pass ^:output-schema metadata it's directly used as the output-schema rather than trying to reconcile with the fnk body, obviating the need for 'eval'. Moreover, there used to be a special shortcut syntax that could be used in ^:output-schema, which was undocumented -- this has been removed, so ^:output-schema needs to be an actual schema. Does this make more sense? Do you forsee running into any issues with this change? Thanks, Jason On Thursday, May 2, 2013 12:22:07 AM UTC-7, Las wrote: Hi, First all congratulations to the new release! Looking at the change log, I'm not sure I understand the following: Explicit output-schema metadata on a fnk is taken as gold, rather than being merged with explicit data by analyzing the fnk body, and must be explicit rather than a spec Thx Sent from my phone On May 1, 2013 8:46 PM, Jason Wolfe ja...@w01fe.com javascript: wrote: Version 0.1.0 of Prismatic's Plumbing/Graph has just been released. The biggest change is backwards-compatible performance improvements of up to 40x for eager compilation, brining Graph to within 20% or so of hand-coded performance for trivial node functions. This was work done by Leon Barrett on a 'sprintbatical' from the Climate Corp, and he's written a great blog post about the update [1]. There are also a handful of small changes and improvements described in the changelog [2]. We've also created a mailing list for Plumbing/Graph [3], so feel free to ask/answer questions, discuss feature requests/bugs, and generally talk about how you are or would like to use Plumbing/Graph there. Cheers, Jason [1] http://blog.getprismatic.com/blog/2013/5/1/graph-faster-abstractions-for-structured-computation [2] https://github.com/Prismatic/plumbing/blob/v0.1.0/CHANGELOG.md [3] https://groups.google.com/forum/#!forum/prismatic-plumbing -- -- 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 javascript: 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/groups/opt_out. -- -- 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/groups/opt_out.
ANN Scrypt 1.0.0
Scrypt is a tiny Clojure library for working with the scrypt key derivation function. It is an alternative to bcrypt and PBKDF2. Release notes: http://blog.clojurewerkz.org/blog/2013/05/02/scrypt-1-dot-0-0-is-released/ -- MK http://github.com/michaelklishin http://twitter.com/michaelklishin -- -- 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/groups/opt_out.
higher order functions and metadata
I've been refactoring some code recently, part of which has include the introduction of higher-order function. But this is causing me some grief in terms of extra work. Let me give an example: user (defn my-function [x y]) #'user/my-function user (doc my-function) - user/my-function ([x y]) nil nil user (def my-partial-function (partial my-function 10)) #'user/my-partial-function user (doc my-partial-function) - user/my-partial-function nil nil The problem is that documentation for my-partial-function doesn't include an arglist. Now I can add this in my hand, but that's a pain. I could write a macro which created a new `defx' form. This could use the higher order function, calculating the metadata from the function argument. And, indeed, I have done this. But it's a pain also if I want to replicate the defn functionality (i.e. pre/post conditions, a doc string and so on), because the macro gets quite complex. As far as I can see, this leaves me with the option creating a macro, say `defdef' which creates new macros of the form `defx'. Which is something that I would like to avoid writing if possible. Am I missing something simple? Phil -- -- 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/groups/opt_out.
Re: Clojure Login form error: java.lang.ClassCastException: clojure.lang.Var$Unbound cannot be cast to clojure.lang.Atom
I committed the codebase to github. I'm open-sourcing the whole project anyways, so here is what I have thus far. Since I'm stuck at the login, the conversion stops there, so this isn't the complete codebase and basically still a skeleton: https://github.com/dt1/SoloResume -- -- 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/groups/opt_out.
Re: [GSoC Idea] cljs layer/dsl over express js
I've been working on my proposal for this project. Here's a rough draft: https://gist.github.com/olenhad/5501208 of what I have so far. Would love some eye balls to verify if its on the right track. Its a little rushed as I just got free from exams. Cheers Omer @olenhad On Mon, Feb 25, 2013 at 4:09 AM, David Nolen dnolen.li...@gmail.com wrote: Done! On Sun, Feb 24, 2013 at 1:53 PM, Omer Iqbal momeriqb...@gmail.com wrote: Extending dogfort for real world use Brief explanation: Node.js provides a lightweight and fast server implementation, that’s commonly used for real time applications. Although its possible to make clojurescript applications targeting nodejs, the current experience is far from pleasant. Partly due to node’s heavy use of callback hell, and partly because most existing node libraries are heavily object oriented and imperative. Dogfort (https://github.com/bodil/dogfort) is a nice proof of concept , inspired by ring and compojure, that abstracts out quite a few of these issues. Expected results: An improved version of dogfort that can be put to real world use. New features include: - sessions - cookies - authentication middleware - socket.io abstraction - route filtering middleware ** Knowledge prerequisites: Familiarity with nodejs Mentor: Bodil Stokke -- -- 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/groups/opt_out. -- -- 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/groups/opt_out.
Re: Clojurians in Austria
Hey Jozef and others, I am looking for a clojure developer for a project or even employment. The company is a well funded startup located in the center of vienna and we have built a collaborative editing web app (similar to google docs - but for plain html) fully based on clojure. Anyone interessted, please contact me. haymo dot meran at girigiri.io Thanks. Cheers Haymo On Tuesday, May 29, 2012 4:27:18 PM UTC+2, Jozef Wagner wrote: Hi, Are there some Clojurians from Austria or is there an Austria Clojure group? I'm looking for a Clojure related job in Austria, and so far I haven't found any Austrian group on meetup.com nor on the google groups :( Best, Jozef -- -- 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/groups/opt_out.
Re: higher order functions and metadata
phillip.l...@newcastle.ac.uk (Phillip Lord) writes:
I've been refactoring some code recently, part of which has include
the introduction of higher-order function. But this is causing me some
grief in terms of extra work. Let me give an example:
user (defn my-function [x y])
#'user/my-function
user (doc my-function)
-
user/my-function
([x y])
nil
nil
user (def my-partial-function (partial my-function 10))
#'user/my-partial-function
user (doc my-partial-function)
-
user/my-partial-function
nil
nil
The problem is that documentation for my-partial-function doesn't
include an arglist. Now I can add this in my hand, but that's a pain.
Well, that's nothing special wrt. higher-order functions, but a
limitation when you define functions with `def`. E.g.,
(def my-function (fn [x y]))
doesn't have :arglists metadata, too.
But since you have to add the docstring by hand anyway, I don't think
that's much of an issue:
(def ^{:doc Applies my-function to 10 and y.
:arglists '([y])}
my-partial-function (partial my-function 10))
Bye,
Tassilo
--
--
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/groups/opt_out.
Re: [GSoC Idea] cljs layer/dsl over express js
Hi everyone, I was wondering if the interceptor concept from Pedestal would also be a good fit in this proposal ? From what I gathered it helps break the flow of execution of the handling of requests while still having something that looks like ring middlewares. Am I off topic or is there something here? Cheers Jeremy. On Thursday, May 2, 2013 11:47:01 AM UTC+2, Omer Iqbal wrote: I've been working on my proposal for this project. Here's a rough draft: https://gist.github.com/olenhad/5501208 of what I have so far. Would love some eye balls to verify if its on the right track. Its a little rushed as I just got free from exams. Cheers Omer @olenhad On Mon, Feb 25, 2013 at 4:09 AM, David Nolen dnolen...@gmail.comjavascript: wrote: Done! On Sun, Feb 24, 2013 at 1:53 PM, Omer Iqbal momer...@gmail.comjavascript: wrote: Extending dogfort for real world use Brief explanation: Node.js provides a lightweight and fast server implementation, that’s commonly used for real time applications. Although its possible to make clojurescript applications targeting nodejs, the current experience is far from pleasant. Partly due to node’s heavy use of callback hell, and partly because most existing node libraries are heavily object oriented and imperative. Dogfort ( https://github.com/bodil/dogfort) is a nice proof of concept , inspired by ring and compojure, that abstracts out quite a few of these issues. Expected results: An improved version of dogfort that can be put to real world use. New features include: - sessions - cookies - authentication middleware - socket.io abstraction - route filtering middleware ** Knowledge prerequisites: Familiarity with nodejs Mentor: Bodil Stokke -- -- 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/groups/opt_out. -- -- 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/groups/opt_out.
Re: A JMonkeyEngine3 wrapper?
Hmm, interesting, but games usually involve much state and changes to keep up their worlds alive.. how do you abstract over this? For example, if you need to move something, then surely you will call for a change.. right inside the user code that happens all the time.. isn't it so? Just interested in how do you develop the functional philosophy to a really usable extent.. I cannot imagine how to avoid changing Vector3f elements at runtime.. or maybe you just pass the whole changed app-state to each new cycle? As far as I see, Jonathan and I, too create the wrappers as a side-effect of a personal project. I just think that maybe it is possible to factor out and assemble the code to a separate library and if you need something in your project, you implement it straight to the library and commit. Of course that would require a kind of coordination like never before, but it is a real FTW and is prone to benifits like finding something you wanted to have already being implemented by someone! четверг, 2 мая 2013 г., 2:14:36 UTC+4 пользователь James Reeves написал: On 1 May 2013 21:08, Alex Fowler alex.m...@gmail.com javascript:wrote: So, inspired by the latest talks with locals, I propose starting a collective initiative on creating a full-scale wrapper for JME3. Actually, I am starting to write my Clojure project with JME3 and I feel like in a desperate need for a clojuric wrapper. So I started implementing wrappers for Material, Texture, Geometry and so on.. but I think that that code would be rather universal and there is no point for it to belong to a personal project. So I think that we might start a community library project on this with those who is interested. Besides that, I think that I am a rather newb in Clojure and if I do that on my own, I will not do it as good as possible :D Is somebody interested in that? I have a bunch of code for a game I'm working on, but I've taken a slightly different approach to the problem than other people seem to have so far. When you develop in a functional language like Clojure, you typically want to quarantine all behaviour related to I/O, and avoid touching any mutable values directly. In Ring, for instance, we limit the interaction with the underlying servlet classes to a single function: the adapter. For jME3, I've been pursuing a similar approach. Essentially I'm aiming for this: (run-app (atom initial-app-data)) The only point of contact between the jME3 classes and the logic in Clojure will be that single function. Everything else will happen through modifying reference to a data structure. Right now I've got it working with geometries, textures, a simple HUD, events, very limited physics, collisions, and I'm currently writing an interface to NiftyGUI (which isn't easy, as it's not very well designed). The work I've done on this so far is part of a game, but could potentially be factored out. Currently it's very much a work in progress, and I expect it to take several months before I have anything useful outside of my use-case. - James -- -- 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/groups/opt_out.
Re: [ANN] Prismatic's Plumbing/Graph 0.1.0 is released with huge performance improvements
Hi, Does this make more sense? Yes, it's all clear now. :) Do you forsee running into any issues with this change? NATM. thx Las 2013/5/2 Jason Wolfe ja...@w01fe.com Yes, I suppose that's not very clear. Fnk attempts to guess the output schema of your function by looking at the body -- if the return value has literal map structure, this is automatically taken as the output schema. Since this analysis is fragile (maps are created programatically, within a let, by a delegate fn, etc), you can also provide explicit ^:output-schema metadata on the argument vector of the fnk. The previous version of plumbing attempted to be smart and 'merge' these two sources of schema data. Your explicit schema could provide additional details about structure, but if it contradicted the literal map structure an exception was thrown. Unfortunately, this required calling 'eval' on the explicit output schema so that it could be analyzed at compile time, in the case that it was itself not literal. We decided that this was a bad idea, so now when you pass ^:output-schema metadata it's directly used as the output-schema rather than trying to reconcile with the fnk body, obviating the need for 'eval'. Moreover, there used to be a special shortcut syntax that could be used in ^:output-schema, which was undocumented -- this has been removed, so ^:output-schema needs to be an actual schema. Does this make more sense? Do you forsee running into any issues with this change? Thanks, Jason On Thursday, May 2, 2013 12:22:07 AM UTC-7, Las wrote: Hi, First all congratulations to the new release! Looking at the change log, I'm not sure I understand the following: Explicit output-schema metadata on a fnk is taken as gold, rather than being merged with explicit data by analyzing the fnk body, and must be explicit rather than a spec Thx Sent from my phone On May 1, 2013 8:46 PM, Jason Wolfe ja...@w01fe.com wrote: Version 0.1.0 of Prismatic's Plumbing/Graph has just been released. The biggest change is backwards-compatible performance improvements of up to 40x for eager compilation, brining Graph to within 20% or so of hand-coded performance for trivial node functions. This was work done by Leon Barrett on a 'sprintbatical' from the Climate Corp, and he's written a great blog post about the update [1]. There are also a handful of small changes and improvements described in the changelog [2]. We've also created a mailing list for Plumbing/Graph [3], so feel free to ask/answer questions, discuss feature requests/bugs, and generally talk about how you are or would like to use Plumbing/Graph there. Cheers, Jason [1] http://blog.getprismatic.com/**blog/2013/5/1/graph-faster-** abstractions-for-structured-**computationhttp://blog.getprismatic.com/blog/2013/5/1/graph-faster-abstractions-for-structured-computation [2] https://github.com/Prismatic/**plumbing/blob/v0.1.0/**CHANGELOG.mdhttps://github.com/Prismatic/plumbing/blob/v0.1.0/CHANGELOG.md [3] https://groups.google.com/**forum/#!forum/prismatic-**plumbinghttps://groups.google.com/forum/#!forum/prismatic-plumbing -- -- 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=enhttp://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. For more options, visit https://groups.google.com/**groups/opt_outhttps://groups.google.com/groups/opt_out . -- -- 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/groups/opt_out. -- László Török -- -- 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
Re: higher order functions and metadata
Tassilo Horn t...@gnu.org writes:
I've been refactoring some code recently, part of which has include
the introduction of higher-order function. But this is causing me some
grief in terms of extra work. Let me give an example:
user (defn my-function [x y])
#'user/my-function
user (doc my-function)
-
user/my-function
([x y])
nil
nil
user (def my-partial-function (partial my-function 10))
#'user/my-partial-function
user (doc my-partial-function)
-
user/my-partial-function
nil
nil
The problem is that documentation for my-partial-function doesn't
include an arglist. Now I can add this in my hand, but that's a pain.
Well, that's nothing special wrt. higher-order functions, but a
limitation when you define functions with `def`. E.g.,
(def my-function (fn [x y]))
Yes, of course. But I have defn to use an option in this case.
But since you have to add the docstring by hand anyway, I don't think
that's much of an issue:
(def ^{:doc Applies my-function to 10 and y.
:arglists '([y])}
my-partial-function (partial my-function 10))
Sure this is what I have been doing. But when the arglist is more
complex it is a pain and results in a lot of duplication.
Phil
--
--
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/groups/opt_out.
Re: The order of lazy-seq
lazy-seq only delays its own evaluation, it is not recursive : (lazy-seq [0 1 2 3]) will evaluate the whole vector as soon as it is forced. This means that it should wrap the tail of the lazy sequence you are building. Consequently, I find that the easiest way to use lazy-seq is as a second argument to cons: (def fib (cons 0 (cons 1 (lazy-seq (map + fib (rest fib)) but that might come from my playing with The Little Schemer. On 1 May 2013 19:51, Stephen Compall stephen.comp...@gmail.com wrote: On Apr 30, 2013 5:32 AM, Liao Pengyu arise...@gmail.com wrote: (def fib (lazy-seq (concat [0 1] (map + fib (rest fib) (take 10 fib) ;; Bomb The expression (rest fib) forces fib, which is the lazy seq you are already trying to force when you eval (rest fib). (def fib (concat [0 1] (lazy-seq (map + fib (rest fib) ;; Works well Whereas here, fib has already been forced when you call (rest fib), (def fib (lazy-cat [0 1] (map + fib (rest fib ;; Works well And here forcing fib doesn't eval (rest fib). All of the above program using lazy-seq As you have seen, lazy-seq is not a silver bullet. -- Stephen Compall If anyone in the MSA is online, you should watch this flythrough. -- -- 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/groups/opt_out. -- -- 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/groups/opt_out.
Re: higher order functions and metadata
phillip.l...@newcastle.ac.uk (Phillip Lord) writes:
Well, that's nothing special wrt. higher-order functions, but a
limitation when you define functions with `def`. E.g.,
(def my-function (fn [x y]))
Yes, of course. But I have defn to use an option in this case.
Sure. `defn` can walk the forms given to it to extract the argument
vectors automatically.
But since you have to add the docstring by hand anyway, I don't think
that's much of an issue:
(def ^{:doc Applies my-function to 10 and y.
:arglists '([y])}
my-partial-function (partial my-function 10))
Sure this is what I have been doing. But when the arglist is more
complex it is a pain and results in a lot of duplication.
The problem is that you can't get the arglists of `my-function` here,
because :arglists is metadata of the var #'my-function, not of the
function being its value. If :arglists was metadata of functions, then
`partial`, `comp` and friends could return functions with correctly
generated :arglists (given that those are correct).
BTW: At least with complex macros, the real arglists are often very
different than what's in :arglists for documentation purposes. For
example, look at what `(doc fn)` shows, yet its only real arglist is
just `[ sigs]`.
Bye,
Tassilo
--
--
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/groups/opt_out.
Re: Clojure Login form error: java.lang.ClassCastException: clojure.lang.Var$Unbound cannot be cast to clojure.lang.Atom
On May 2, 2013 2:04 AM, David Toomey dbtoo...@gmail.com wrote: Is there anything I could show that could reveal the problem? Yes, you should have shown the stack trace of the exception (or at least the part from the top of the text down to your code). But even without that, you have an error coming out of noir.session that says something is unbound where an atom was expected. That should send you to the source for noir.session. There you'll see everything depends on the dynamic global *noir-session*, which is only ever bound by wrap-noir-session, which you're not calling. That's a compojure middleware fn. Take a look at some compojure tutorial to see where and how they're used. There are likely other similar middleware fn calls noir will expect you to have made. Hopefully having struggled with this one, figuring the others out will be easy. -- -- 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/groups/opt_out.
[ANN] conf-er 1.0.1
A very simple library for loading application level config from a
configuration file in a nice way, with caching and reloading functionality.
Any other configuration libraries I found were either massively overkill
for my needs (full on validation schemas built in), too complicated to set
up and pass around or involved simply read-evaling a whole namespace which
could be insecure depending where you get your config.
Simple but useful - I found myself duplicating this code in almost all my
projects before making it into a library! Well tested and documented, there
are very few moving parts so I expect this to stay stable and not really
change over time.
Source: https://github.com/TouchType/conf-er
Clojars: [conf-er 1.0.1]
The idea is to have a single configuration file which consists of a
keyworded map, you then look up individual properties with nested keywords,
for example your config file looks like this (simple EDN map):
;; my-config.conf
{:username joe.bloggs
:password letmein
:database {:host 127.0.0.1
:port 1234}
:my.library/number 42}
And then look up the configuration from anywhere within your program!
Simply include the conf-er namespace
(use 'conf-er)
(config :username) = joe.bloggs
(configured? :database) = true
(config :database) = {:host 127.0.0.1 :port 1234}
(config :database :port) = 1234
Tell your program where to find the configuration file from your leiningen
project.clj during development, or if you are distributing a jar then add
the property onto the java command line call:
...
:jvm-opts [-Dconfig=~/my-config.conf]
...
(config :database :connections) = (Exception Couldn't find :database
:connections in configuration file)
(opt-config :database :connections) = nil
If you use this from within a library, you must namespace your
configuration in case the application using your library also wishes to use
conf-er. You can do this like so:
(ns my.library
(:require [conf-er :refer [config]]))
(config ::number) = 42
Here :number will expand out to the namespaced keyword :my.library/number,
which we put in our configuration file earlier.
Hope this is of use to some people.
Adam
--
--
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/groups/opt_out.
Re: A JMonkeyEngine3 wrapper?
On 2 May 2013 12:09, Alex Fowler alex.murat...@gmail.com wrote: Hmm, interesting, but games usually involve much state and changes to keep up their worlds alive.. how do you abstract over this? I work out what changes are required to the scene by comparing the current data structure with the previous one, then change the scene accordingly. I'm currently employing a very naive strategy: if the data structure associated with a tree of nodes has changed, I remove all the child nodes and recreate them from the data structure. This works well for a relatively static world, and allows me to have around 50 moving NPCs in the scene and still maintain 60 fps on modest hardware. If I want more power, then I'd need a more sophisticated approach. For instance, I could construct a custom data structure that maintains a log of changes, then use that to mutate the jME3 node attributes that have changed. However, I suspect I'll hit other bottlenecks (such as the number of triangles my GPU can render) long before I need something quite that complex. As far as I see, Jonathan and I, too create the wrappers as a side-effect of a personal project. I just think that maybe it is possible to factor out and assemble the code to a separate library and if you need something in your project, you implement it straight to the library and commit. Of course that would require a kind of coordination like never before, but it is a real FTW and is prone to benifits like finding something you wanted to have already being implemented by someone! My use case might be different enough to make this difficult. I'm using jME3 classes to save time, but I deviate from standard jME3 practise when it makes sense to do so. For instance, I don't use the AssetManager from the SimpleApplication object, because it makes more sense to have a global AssetManager. - James -- -- 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/groups/opt_out.
Re: higher order functions and metadata
Tassilo Horn t...@gnu.org writes:
But since you have to add the docstring by hand anyway, I don't think
that's much of an issue:
(def ^{:doc Applies my-function to 10 and y.
:arglists '([y])}
my-partial-function (partial my-function 10))
Sure this is what I have been doing. But when the arglist is more
complex it is a pain and results in a lot of duplication.
The problem is that you can't get the arglists of `my-function` here,
because :arglists is metadata of the var #'my-function, not of the
function being its value. If :arglists was metadata of functions, then
`partial`, `comp` and friends could return functions with correctly
generated :arglists (given that those are correct).
Yes, I know. Hence my thought that I have to do this with macros. It's a
shame that the function option including lambda's don't have this
metadata as well.
BTW: At least with complex macros, the real arglists are often very
different than what's in :arglists for documentation purposes. For
example, look at what `(doc fn)` shows, yet its only real arglist is
just `[ sigs]`.
Indeed. I am using this myself, and putting arglists in like
'([individual classes][ontolology individual classes])
which only works because I can distinguish between all the entities by
type (they are java objects), so disambiguiate.
Well, I guess I will code up a simple macro; in my current case, I can
infer the arglists anyway.
Thanks for the help!
Phil
--
--
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/groups/opt_out.
Re: higher order functions and metadata
On Thu, May 2, 2013 at 8:33 AM, Phillip Lord phillip.l...@newcastle.ac.ukwrote: Well, I guess I will code up a simple macro; in my current case, I can infer the arglists anyway. Once you do, be sure to weigh the complexity against: (defn my-partial-function [y] (my-function 10 y)) -- -- 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/groups/opt_out.
Re: [ANN] Instaparse 1.0.0
Hi, what do you think about dsl version using map?
Nice Idea was proposed here
http://www.reddit.com/r/Clojure/comments/1djbio/growing_a_lanugage_with_clojure_and_instaparse/c9qwv4d
On Tuesday, April 9, 2013 12:41:38 PM UTC+3, puzzler wrote:
On Tue, Apr 9, 2013 at 1:33 AM, Tassilo Horn ts...@gnu.org
javascript:wrote:
Nice, but providing the grammar as a plain string looks somewhat
unnatural to me. Why not something like this (parser being a macro)?
(def as-and-bs
(parser
S = AB* .
AB = A B .
A = a + .
B = b + .))
I.e., symbols denote non-terminals, strings denote terminals, and the
dot indicates the end of a rule.
Bye,
Tassilo
I played around with that, but even if you suppress evaluation by using a
macro, Clojure's reader makes strong assumptions about certain symbols.
For example, it is standard in EBNF notation for {} to mean zero-or-more.
But if you include {A B C} in your grammar using the macro approach,
Clojure's reader will throw an error because it treats {} as a map and
expects an even number of forms to follow. That was the main reason, but
it also makes the notation much more sensitive to whitespace (for example,
AB * versus AB*). Gradually, those little issues start making it look less
and less like traditional notation. There's something really nice about
just being able to copy and paste a grammar off of a website and have it
just work.
I understand where you're coming from, though. It definitely is part of
the Clojure culture to avoid string representations for many kinds of data
(e.g., SQL queries). We do accept it for regular expressions, and for
things like #inst 2011-12-31T19:00:00.000-05:00, though, and that's the
kind of feel I was going for. Would it be more psychologically palatable
to type:
#insta/parser S = 'a' 'b'
rather than
(insta/parser S = 'a' 'b')
?
What do you think would be gained by making it a macro? From my
perspective, a macro is essentially just a string that is being processed
by the Clojure reader (and thus subject to its constraints). If the
grammar were expressed in the way you propose, is it any easier to build up
a grammar programmatically? Is it any easier to compose grammars? If
anything, I think it might be harder.
Thanks for the comments,
Mark
--
--
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/groups/opt_out.
Re: Clojure Login form error: java.lang.ClassCastException: clojure.lang.Var$Unbound cannot be cast to clojure.lang.Atom
On May 2, 5:21 am, John D. Hume duelin.mark...@gmail.com wrote:
On May 2, 2013 2:04 AM, David Toomey dbtoo...@gmail.com wrote:
Is there anything
I could show that could reveal the problem?
Yes, you should have shown the stack trace of the exception (or at least
the part from the top of the text down to your code).
But even without that, you have an error coming out of noir.session that
says something is unbound where an atom was expected. That should send you
to the source for noir.session. There you'll see everything depends on the
dynamic global *noir-session*, which is only ever bound by
wrap-noir-session, which you're not calling. That's a compojure middleware
fn. Take a look at some compojure tutorial to see where and how they're
used.
There are likely other similar middleware fn calls noir will expect you to
have made. Hopefully having struggled with this one, figuring the others
out will be easy.
Wow. What an amazing answer.
The stack trace: The main error is the title of this thread. The
second line is something about swap! and clojure.core, the next line
traces directly to the line of code that I pointed out 2 times above.
The next line after that points to a route, which I posted above as
well.
Here is the login code from 4clojure: what middleware and what call
to wrap-noir-session is being used here?
(defn do-login [user pwd]
(let [user (.toLowerCase user)
{db-pwd :pwd} (from-mongo (fetch-one :users :where {:user
user}))
location (session/get :login-to)]
(if (and db-pwd (.checkPassword (StrongPasswordEncryptor.) pwd
db-pwd))
(do (update! :users {:user user}
{:$set {:last-login (java.util.Date.)}}
:upsert false) ; never create new users
accidentally
(session/put! :user user)
(session/remove! :login-to)
(response/redirect (or location /problems)))
(flash-error /login Error logging in.
Clearly, there is none.
Then you give me a total fuck you answer, Hopefully having struggled
with this one, figuring the others out will be easy.
How is that at all helpful? You tell me to look at the Lib-Noir source
and the source says exactly what I already knew (because, clearly you
are psychic and you know that I didn't look already). Wait... do you
want me to ask Google for a Clojure login page tutorial? Done, do you
know what the first several hits are? My blog which explains how to do
it in Noir. The next few are Stack Overflow threads asking about
creating login pages and this very topic:
This thread, with 4 upvotes is unanswered:
http://stackoverflow.com/questions/14806063/howto-use-lib-noir-stateful-sessions-in-compojure
Four upvotes is quite a lot for a Clojure question. This probably
indicates that this is a broad issue that affects many people. Why?
Because of this shit right here. Clojure is a beautiful language, but
these kind of LOL answers are exactly why the community sucks (I've
read and heard more that a few disturbing complaints) and why people
don't want to learn the language, which is further exacerbated by the
sub-optimal documentation and don't even get me started on the half-
assed tutorials (Look at WHAT middleware tutorial?). If a person just
coming to Clojure is struggling to create something incredibly basic
(hell, IDK, a login page?) and when asked, can't get a civil response,
then the language is toast.
I linked to my github. Does the projects look like the work of someone
that is an utter moron at this language or Lisp in general?
Let me take this moment to help you: the correct way to answer the
question is to direct me to a *reputable* source that touches on this
issue, and maybe just maybe accept the retarded idea that I showed you
EXACTLY where the stacktraces pointed (which I did). If all else
fails, you can even tell me the answer or at least try to answer it in
a way that isn't utterly condescending or act like you can't look at 5
LOC and not comprehend that error on this line means error on
this line. Clearly, I don't see what the issue is and I am asking for
help to see where my logic is wrong: I'm not asking you to be an ass.
--
--
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/groups/opt_out.
Re: Clojure Login form error: java.lang.ClassCastException: clojure.lang.Var$Unbound cannot be cast to clojure.lang.Atom
I've never used noir and have barely used 4clojure, but both of them apparently do hidden global things that make it hard to know the context in which your code is running. Your app needs to be wrapped in noir's `wrap-noir-session` middleware in much the same way this blog post shows Ring's `wrap-session` being used: http://rjevans.net/post/2628238502/session-support-in-compojure-ring https://gist.github.com/mirrormatch/768768 I'll leave it at that. -- -- 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/groups/opt_out.
Re: Clojure Login form error: java.lang.ClassCastException: clojure.lang.Var$Unbound cannot be cast to clojure.lang.Atom
On Thursday, May 2, 2013 10:19:51 AM UTC-4, David Toomey wrote: [snipped] If you want help in the future, I'd recommend spending less time demanding answers and more time reading responses and code. I've never looked at the 4clojure source, didn't even know it was on github. I've never used ring, compojure, or any other clojure web framework. The total time it took me to clone the 4clojure repo, grep for what John recommended, and get you this link ( https://github.com/4clojure/4clojure/blob/develop/src/foreclojure/core.clj#L58), about 30 seconds. Python has been around significantly longer, and has a much larger community. If you need that level of support, I don't think Clojure is the right language for you. Cheers, Jay -- -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: Clojure Login form error: java.lang.ClassCastException: clojure.lang.Var$Unbound cannot be cast to clojure.lang.Atom
Does the projects look like the work of someone that is an utter moron ... your response certainly is. On Thu, May 2, 2013 at 10:28 AM, Jay Fields j...@jayfields.com wrote: On Thursday, May 2, 2013 10:19:51 AM UTC-4, David Toomey wrote: [snipped] If you want help in the future, I'd recommend spending less time demanding answers and more time reading responses and code. I've never looked at the 4clojure source, didn't even know it was on github. I've never used ring, compojure, or any other clojure web framework. The total time it took me to clone the 4clojure repo, grep for what John recommended, and get you this link ( https://github.com/4clojure/4clojure/blob/develop/src/foreclojure/core.clj#L58), about 30 seconds. Python has been around significantly longer, and has a much larger community. If you need that level of support, I don't think Clojure is the right language for you. Cheers, Jay -- -- 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/groups/opt_out. -- -- 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/groups/opt_out.
Re: higher order functions and metadata
John D. Hume duelin.mark...@gmail.com writes: On Thu, May 2, 2013 at 8:33 AM, Phillip Lord phillip.l...@newcastle.ac.ukwrote: Well, I guess I will code up a simple macro; in my current case, I can infer the arglists anyway. Once you do, be sure to weigh the complexity against: (defn my-partial-function [y] (my-function 10 y)) I'd thought about that. Most of my functions are actually increasing the arity, and a few other bits of bobs in between. Another option would be (defn my-partial-function [y] ((partial my-function 10) y)) which is functionally equivalent. The reason for doing this is that I have 20 or 30 functions all of the same form, and they currently have more boilerplate than I like. Phil -- -- 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/groups/opt_out.
Re: emacs - how to wean me off the family of Java IDEs
Devin Walters writes: Voicing strong disagreement with using emacs-live as a starting point. One reason: They rebind a bunch of default emacs bindings, which is just fine by me, but C-h to a newcomer is important, and IIRC they rebound it. I think Phil's emacs-starter-kit modules/packages are a better place to start. Eh; even the Starter Kit does way too much. It's a common problem with newcomers who pull in these huge packages that bundle lots of unrelated functionality together; it's difficult to debug when things don't work right since you can't tell where a specific piece of functionality comes from. These days I recommend pulling in small specific packages for the things you want rather than a one-size-fits-all config. It means a little more reading and exploring up front, but it pays off in the end. I spun off the bare minimum from the Starter Kit into a small, focused, actually-documented package called better-defaults.el that might be a good starting place: https://github.com/technomancy/better-defaults I plan on doing more work around documenting useful packages in the future along with putting together some kind of high-level ecosystem guide, but haven't gotten to it yet. In the mean time, reading the source for the Starter Kit can be illuminating, even if you don't use it outright. -Phil pgp81vlCdnoBW.pgp Description: PGP signature
Re: ANN Scrypt 1.0.0
Nice! Thank you for open-sourcing it. Il giorno giovedì 2 maggio 2013 10:10:38 UTC+2, Michael Klishin ha scritto: Scrypt is a tiny Clojure library for working with the scrypt key derivation function. It is an alternative to bcrypt and PBKDF2. Release notes: http://blog.clojurewerkz.org/blog/2013/05/02/scrypt-1-dot-0-0-is-released/ -- MK http://github.com/michaelklishin http://twitter.com/michaelklishin -- -- 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/groups/opt_out.
Re: emacs - how to wean me off the family of Java IDEs
I agree with you, but personally found that the starter-kit wasn't as divergent from the norm as emacs-live and didn't have as many strong opinions. My big complaint is really just the rebinding of C-h. It's important for newcomers to be able to use that to learn about bindings and so on that are custom. I basically just learned how to use the help commands and then extracted the portions of the starter kit I wanted over time. — Sent via Mobile On Thu, May 2, 2013 at 11:17 AM, Phil Hagelberg p...@hagelb.org wrote: Devin Walters writes: Voicing strong disagreement with using emacs-live as a starting point. One reason: They rebind a bunch of default emacs bindings, which is just fine by me, but C-h to a newcomer is important, and IIRC they rebound it. I think Phil's emacs-starter-kit modules/packages are a better place to start. Eh; even the Starter Kit does way too much. It's a common problem with newcomers who pull in these huge packages that bundle lots of unrelated functionality together; it's difficult to debug when things don't work right since you can't tell where a specific piece of functionality comes from. These days I recommend pulling in small specific packages for the things you want rather than a one-size-fits-all config. It means a little more reading and exploring up front, but it pays off in the end. I spun off the bare minimum from the Starter Kit into a small, focused, actually-documented package called better-defaults.el that might be a good starting place: https://github.com/technomancy/better-defaults I plan on doing more work around documenting useful packages in the future along with putting together some kind of high-level ecosystem guide, but haven't gotten to it yet. In the mean time, reading the source for the Starter Kit can be illuminating, even if you don't use it outright. -Phil -- -- 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/groups/opt_out.
Re: emacs - how to wean me off the family of Java IDEs
After a year and a half of use, I still don't know anything about C-h, I've gotten by for a year or so on 'M-x describe-bindings' and more ad-hoc methods of finding stuff out. On Thu, May 2, 2013 at 1:29 PM, Devin Walters dev...@gmail.com wrote: I agree with you, but personally found that the starter-kit wasn't as divergent from the norm as emacs-live and didn't have as many strong opinions. My big complaint is really just the rebinding of C-h. It's important for newcomers to be able to use that to learn about bindings and so on that are custom. I basically just learned how to use the help commands and then extracted the portions of the starter kit I wanted over time. — Sent via Mobile On Thu, May 2, 2013 at 11:17 AM, Phil Hagelberg p...@hagelb.org wrote: null **contents.asc** -- -- 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/groups/opt_out. -- -- 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/groups/opt_out.
ANN Titanium 1.0.0-beta1 is released
Titanium [1] is a Clojure graph library built on top of Aurelius Titan. 1.0.0-beta1 is a major development milestone that upgrade Titanium to Titan 0.3, extracts Blueprints graph operations into a separate library (Archimedes) and switches Titanium to Ogre [2] for graph querying. This release has major public API changes. Archimedes and Ogre also matured quite a bit since the last Titanium release. Release notes: http://blog.clojurewerkz.org/blog/2013/05/02/titanium-1-dot-0-0-beta1-is-released/ I'd like to thank Zack Maril for his hard work on Titanium, Archimedes and Ogre. Clojure shapes up to be a great ecosystem for data processing and graph analysis in general, in large part thanks to his efforts! 1. http://titanium.clojurewerkz.org 2. http://ogre.clojurewerkz.org -- MK http://github.com/michaelklishin http://twitter.com/michaelklishin -- -- 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/groups/opt_out.
Re: [ANN] Instaparse 1.0.0
On Thu, May 2, 2013 at 7:19 AM, Max Gonzih gon...@gmail.com wrote: Hi, what do you think about dsl version using map? The short answer is that this is already supported. In the github readme, you'll find a section labeled Combinators, in which I outline instaparse's dsl for creating grammars as a map from keywords to combinators. -- -- 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/groups/opt_out.
Re: ANN Titanium 1.0.0-beta1 is released
Michael is being far too kind. We've already had multiple people from the Clojure community opening issues and pull requests on all three of the graphy projects. Thank you all! On the flip side, if you are interested in getting started with (or getting involved) with these projects, shoot me an email and I'll find a juicy morsel or issue for you to work on. I've got more cool and interesting ideas to work on than I can handle right now and I'm always happy to help people get started. I'm trying to take care of the dirty API/documentation work so you can focus on doing all the cool stuff. -Zack On Thursday, May 2, 2013 10:24:37 PM UTC+4, Michael Klishin wrote: Titanium [1] is a Clojure graph library built on top of Aurelius Titan. 1.0.0-beta1 is a major development milestone that upgrade Titanium to Titan 0.3, extracts Blueprints graph operations into a separate library (Archimedes) and switches Titanium to Ogre [2] for graph querying. This release has major public API changes. Archimedes and Ogre also matured quite a bit since the last Titanium release. Release notes: http://blog.clojurewerkz.org/blog/2013/05/02/titanium-1-dot-0-0-beta1-is-released/ I'd like to thank Zack Maril for his hard work on Titanium, Archimedes and Ogre. Clojure shapes up to be a great ecosystem for data processing and graph analysis in general, in large part thanks to his efforts! 1. http://titanium.clojurewerkz.org 2. http://ogre.clojurewerkz.org -- MK http://github.com/michaelklishin http://twitter.com/michaelklishin -- -- 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/groups/opt_out.
More idiomatic way to use map like this?
Given pseudo-code (Ruby-ish): due = 100 cards = cards.map do |card| card.applied_balance = max(0, due - card.balance) due -= card.applied_balance Notice how due changes at each turn, and each successive item in cards sees the change. What's an idiomatic way to do this in Clojure without using refs? -Steven -- -- 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/groups/opt_out.
Re: More idiomatic way to use map like this?
You can use reduce to carry forward both the new value on the cards, and
the new value of due.
user (let [due 100
cards [{:balance 120} {:balance 30} {:balance 35} {:balance
40}]]
(reduce (fn [[due cards] card]
(let [applied (max 0 (- due (:balance card)))]
[(- due applied) (conj cards (assoc card
:applied-balance applied))]))
[due []]
cards))
[30 [{:applied-balance 0, :balance 120} {:applied-balance 70, :balance 30}
{:applied-balance 0, :balance 35} {:applied-balance 0, :balance 40}]]
The first item in the result is the remaining balance, the second is
mutated cards.
On Thu, May 2, 2013 at 2:21 PM, Steven Degutis sbdegu...@gmail.com wrote:
Given pseudo-code (Ruby-ish):
due = 100
cards = cards.map do |card|
card.applied_balance = max(0, due - card.balance)
due -= card.applied_balance
Notice how due changes at each turn, and each successive item in
cards sees the change.
What's an idiomatic way to do this in Clojure without using refs?
-Steven
--
--
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/groups/opt_out.
--
Ben Wolfson
Human kind has used its intelligence to vary the flavour of drinks, which
may be sweet, aromatic, fermented or spirit-based. ... Family and social
life also offer numerous other occasions to consume drinks for pleasure.
[Larousse, Drink entry]
--
--
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/groups/opt_out.
Re: [ANN] stories - bdd lib for clojure
Sounds interesting. The repo seems to be unavailable on Github, is that correct? Jeroen On Sun, Apr 28, 2013 at 3:52 PM, Steven Degutis sbdegu...@gmail.com wrote: Great, thanks. Now it's at https://clojars.org/stories -Steven On Sun, Apr 28, 2013 at 1:25 AM, Michael Klishin michael.s.klis...@gmail.com wrote: 2013/4/28 Steven Degutis sbdegu...@gmail.com I'd put it on Clojars but I can't really figure out how to deal with this gpg stuff. Seems way more complicated. Wish clojure had something easier, like homebrew and melpa. But whatever. GPG signint is currently optional. lein do pom, jar scp pom.xml target/[library]-[version].jar cloj...@clojars.org: -- MK http://github.com/michaelklishin http://twitter.com/michaelklishin -- -- 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/groups/opt_out. -- -- 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/groups/opt_out. -- -- 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/groups/opt_out.
Re: [ANN] stories - bdd lib for clojure
Yeah I deleted it. Realized it's not worth anyone's time. On Thu, May 2, 2013 at 4:44 PM, Jeroen van Dijk jeroentjevand...@gmail.com wrote: Sounds interesting. The repo seems to be unavailable on Github, is that correct? Jeroen On Sun, Apr 28, 2013 at 3:52 PM, Steven Degutis sbdegu...@gmail.com wrote: Great, thanks. Now it's at https://clojars.org/stories -Steven On Sun, Apr 28, 2013 at 1:25 AM, Michael Klishin michael.s.klis...@gmail.com wrote: 2013/4/28 Steven Degutis sbdegu...@gmail.com I'd put it on Clojars but I can't really figure out how to deal with this gpg stuff. Seems way more complicated. Wish clojure had something easier, like homebrew and melpa. But whatever. GPG signint is currently optional. lein do pom, jar scp pom.xml target/[library]-[version].jar cloj...@clojars.org: -- MK http://github.com/michaelklishin http://twitter.com/michaelklishin -- -- 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/groups/opt_out. -- -- 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/groups/opt_out. -- -- 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/groups/opt_out. -- -- 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/groups/opt_out.
Re: More idiomatic way to use map like this?
Is this code applying an amount due against a customer's list of credit cards? If so, there seems to be a bug. The third line should be: card.appliedBalance = min(due, card.balance) and the Clojure code I'd write is: (defrecord Card [balance applied-balance]) (defn apply-due-to-cards [[due new-cards] card] (let [applied-bal (min due (:balance card))] [(- due applied-bal) (conj new-cards (-Card (:balance card) applied-bal))])) (assert (= (reduce apply-due-to-cards [100 []] [(-Card 10 0) (-Card 30 0) (-Card 150 0)]) [0 [(-Card 10 10) (-Card 30 30) (-Card 150 60)]])) Also four lines long like the Ruby example, but it's easier to debug when there's a bug just by changing `reduce` to `reductions`. It's also threadsafe, and can be parallelized for large datasets by using the Clojure 5 Reducers library. On Friday, May 3, 2013 5:21:46 AM UTC+8, Steven Degutis wrote: Given pseudo-code (Ruby-ish): due = 100 cards = cards.map do |card| card.applied_balance = max(0, due - card.balance) due -= card.applied_balance Notice how due changes at each turn, and each successive item in cards sees the change. What's an idiomatic way to do this in Clojure without using refs? -Steven -- -- 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/groups/opt_out.
Re: [ANN] stories - bdd lib for clojure
Wow. Got surprised with 404! Sad. On Thursday, May 2, 2013 6:58:57 PM UTC-3, Steven Degutis wrote: Yeah I deleted it. Realized it's not worth anyone's time. On Thu, May 2, 2013 at 4:44 PM, Jeroen van Dijk jeroentj...@gmail.com javascript: wrote: Sounds interesting. The repo seems to be unavailable on Github, is that correct? Jeroen On Sun, Apr 28, 2013 at 3:52 PM, Steven Degutis sbde...@gmail.comjavascript: wrote: Great, thanks. Now it's at https://clojars.org/stories -Steven On Sun, Apr 28, 2013 at 1:25 AM, Michael Klishin michael@gmail.com javascript: wrote: 2013/4/28 Steven Degutis sbde...@gmail.com javascript: I'd put it on Clojars but I can't really figure out how to deal with this gpg stuff. Seems way more complicated. Wish clojure had something easier, like homebrew and melpa. But whatever. GPG signint is currently optional. lein do pom, jar scp pom.xml target/[library]-[version].jar clo...@clojars.orgjavascript:: -- MK http://github.com/michaelklishin http://twitter.com/michaelklishin -- -- 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/groups/opt_out. -- -- 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/groups/opt_out. -- -- 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/groups/opt_out. -- -- 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/groups/opt_out.
Re: [ANN] stories - bdd lib for clojure
Here, it's back up for a while: https://github.com/sdegutis/stories Please fork it. -Steven On Thu, May 2, 2013 at 5:36 PM, Paulo Suzart paulosuz...@gmail.com wrote: Wow. Got surprised with 404! Sad. On Thursday, May 2, 2013 6:58:57 PM UTC-3, Steven Degutis wrote: Yeah I deleted it. Realized it's not worth anyone's time. On Thu, May 2, 2013 at 4:44 PM, Jeroen van Dijk jeroentj...@gmail.com wrote: Sounds interesting. The repo seems to be unavailable on Github, is that correct? Jeroen On Sun, Apr 28, 2013 at 3:52 PM, Steven Degutis sbde...@gmail.com wrote: Great, thanks. Now it's at https://clojars.org/stories -Steven On Sun, Apr 28, 2013 at 1:25 AM, Michael Klishin michael@gmail.com wrote: 2013/4/28 Steven Degutis sbde...@gmail.com I'd put it on Clojars but I can't really figure out how to deal with this gpg stuff. Seems way more complicated. Wish clojure had something easier, like homebrew and melpa. But whatever. GPG signint is currently optional. lein do pom, jar scp pom.xml target/[library]-[version].jar clo...@clojars.org: -- MK http://github.com/michaelklishin http://twitter.com/michaelklishin -- -- 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 the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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 the Google Groups Clojure group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+u...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- -- 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/groups/opt_out. -- -- 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/groups/opt_out.
Re: ANN: vim-redl -- advanced fuzzy omnicompletion and VimClojure-style repl with enhanced debugging features
Hi, This is what I get using the head of master. Typed :ReplHere E117: Unknown function: fireplace#ns E116: Invalid arguments for function redl#repl#create no idea what is going on. On 4 April 2013 22:19, dgrnbrg dsg123456...@gmail.com wrote: You there are plug mappings for all the repl actions: Plugclj_repl_enter. -- key for enter press Plugclj_repl_eval. -- key to for evaluation in the middle of the repl (i.e. not at the end of the form) Plugclj_repl_hat. -- equivalent to ^ Plugclj_repl_Ins. -- equivalent to I Plugclj_repl_uphist. -- history up Plugclj_repl_downhist. -- history down You can look at the repl.vim file to see how to make new mappings. I create the default repl mappings only if you haven't provided custom ones. On Thursday, April 4, 2013 12:40:38 PM UTC-4, Max Gonzih wrote: So I got it working and it's pretty cool. But is there any options to remap default keys (for example I'm using -_ instead of $^)? 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/groups/opt_out. -- Paulo Suzart @paulosuzart -- -- 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/groups/opt_out.
Re: ANN: vim-redl -- advanced fuzzy omnicompletion and VimClojure-style repl with enhanced debugging features
Make sure to have vimfireplace installed and a repl up and going for the project. -- -- 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/groups/opt_out.
Re: More idiomatic way to use map like this?
Epic win. Thanks guys, this is a really neat technique! I was thinking the solution must be something like reduce but with two values, the due amount and the cards, but I couldn't figure out how to get the cards to map. Turns out conj was the missing piece of the puzzle. Thanks again! On Thu, May 2, 2013 at 5:34 PM, Gavin Grover gavingroovygro...@gmail.com wrote: Is this code applying an amount due against a customer's list of credit cards? If so, there seems to be a bug. The third line should be: card.appliedBalance = min(due, card.balance) and the Clojure code I'd write is: (defrecord Card [balance applied-balance]) (defn apply-due-to-cards [[due new-cards] card] (let [applied-bal (min due (:balance card))] [(- due applied-bal) (conj new-cards (-Card (:balance card) applied-bal))])) (assert (= (reduce apply-due-to-cards [100 []] [(-Card 10 0) (-Card 30 0) (-Card 150 0)]) [0 [(-Card 10 10) (-Card 30 30) (-Card 150 60)]])) Also four lines long like the Ruby example, but it's easier to debug when there's a bug just by changing `reduce` to `reductions`. It's also threadsafe, and can be parallelized for large datasets by using the Clojure 5 Reducers library. On Friday, May 3, 2013 5:21:46 AM UTC+8, Steven Degutis wrote: Given pseudo-code (Ruby-ish): due = 100 cards = cards.map do |card| card.applied_balance = max(0, due - card.balance) due -= card.applied_balance Notice how due changes at each turn, and each successive item in cards sees the change. What's an idiomatic way to do this in Clojure without using refs? -Steven -- -- 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/groups/opt_out. -- -- 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/groups/opt_out.
Re: More idiomatic way to use map like this?
This isn't idiomatic but can be useful for modeling mutable computations in
pure functions:
(use '[blancas.morph core monads])
(def cards [{:balance 30} {:balance 25}])
(def due 100)
(run-state (mapm #(monad [due get-state
app (state (min due (:balance %)))
_ (put-state (- due app))]
(state (assoc % :applied-balance app))) cards) due)
mapm is a map for monads; (state x) boxes cards; the state is the total due.
;Pair([{:balance 30, :applied-balance 30} {:balance 25, :applied-balance
25}],45)
On Thursday, May 2, 2013 8:34:41 PM UTC-7, Steven Degutis wrote:
Epic win. Thanks guys, this is a really neat technique! I was thinking
the solution must be something like reduce but with two values, the
due amount and the cards, but I couldn't figure out how to get the
cards to map. Turns out conj was the missing piece of the puzzle.
Thanks again!
On Thu, May 2, 2013 at 5:34 PM, Gavin Grover
gavingro...@gmail.com javascript: wrote:
Is this code applying an amount due against a customer's list of credit
cards? If so, there seems to be a bug. The third line should be:
card.appliedBalance = min(due, card.balance)
and the Clojure code I'd write is:
(defrecord Card [balance applied-balance])
(defn apply-due-to-cards [[due new-cards] card]
(let [applied-bal (min due (:balance card))]
[(- due applied-bal)
(conj new-cards (-Card (:balance card) applied-bal))]))
(assert (=
(reduce apply-due-to-cards [100 []]
[(-Card 10 0) (-Card 30 0) (-Card 150 0)])
[0
[(-Card 10 10) (-Card 30 30) (-Card 150 60)]]))
Also four lines long like the Ruby example, but it's easier to debug
when
there's a bug just by changing `reduce` to `reductions`. It's also
threadsafe, and can be parallelized for large datasets by using the
Clojure
5 Reducers library.
On Friday, May 3, 2013 5:21:46 AM UTC+8, Steven Degutis wrote:
Given pseudo-code (Ruby-ish):
due = 100
cards = cards.map do |card|
card.applied_balance = max(0, due - card.balance)
due -= card.applied_balance
Notice how due changes at each turn, and each successive item in
cards sees the change.
What's an idiomatic way to do this in Clojure without using refs?
-Steven
--
--
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/groups/opt_out.
--
--
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/groups/opt_out.
Re: Clojure Login form error: java.lang.ClassCastException: clojure.lang.Var$Unbound cannot be cast to clojure.lang.Atom
On May 2, 7:59 am, John D. Hume duelin.mark...@gmail.com wrote: I've never used noir and have barely used 4clojure, but both of them apparently do hidden global things that make it hard to know the context in which your code is running. Your app needs to be wrapped in noir's `wrap-noir-session` middleware in much the same way this blog post shows Ring's `wrap-session` being used: http://rjevans.net/post/2628238502/session-support-in-compojure-ringhttps://gist.github.com/mirrormatch/768768 I'll leave it at that. Cool, 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/groups/opt_out.
