Re: core.match and AOT
See http://dev.clojure.org/jira/browse/MATCH-63 for details. Paudi On 15 October 2012 23:21, David Nolen dnolen.li...@gmail.com wrote: On Mon, Oct 15, 2012 at 5:09 PM, Paudi Moriarty pmoria...@annadaletech.com wrote: It's broken since alpha10, alpha9 works fine. Paudi That's useful to know, thanks :) I suspect it may have something to do with the predicate stuff I added. David -- 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 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
Re: How to represent trees for use with zippers
Dave, Your first attempt looks OK to me. (require '(clojure [zip :as z])) (def zipper (z/vector-zip [:A [:B [:D :E]] [:C [:F :G]]])) (defn pre-order [loc] (when-not (z/end? loc) (when-not (z/branch? loc) (println (z/node loc))) (recur (z/next loc user= (pre-order zipper) :A :B :D :E :C :F :G nil user= What made you think it didn't work? -mark On Monday, October 15, 2012 9:20:14 PM UTC+1, Dave Kincaid wrote: I stumbled across the clojure.zip library today which looks extremely useful for working with trees. The only problem is I can't figure out how to represent a tree as a vector so that the zipper will have the correct structure. For example say I want to work with this tree: https://lh5.googleusercontent.com/-mq1roiqfqw4/UHxvMDQUIfI/A_o/mNA9pAkOEIs/s1600/tree.png my first intuition was a vector like this [:A [:B [:D :E]] [:C [:F :G]]] but that didn't work. Then I thought of something like this: [[:B [:D :E]] :A [:C [:F :G]]]. It seems like that gets me a little bit closer since now the zipper at least gets that :A has two children. Can anyone help me understand how to represent a tree in a Clojure vector? Is there a common lispy way of doing this that everyone already knows? It seems like all of the references I could find online all assume that you know how to represent a tree already. Thanks, Dave -- 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
Re: Evaluating an anonymous function with closure
On 16/10/12 03:50, Michael Gardner wrote: On Oct 15, 2012, at 7:45 PM, Andy Fingerhut wrote: For the case of arithmetic on compile-time constants, I believe that many C, Java, etc. compilers already perform the arithmetic at compile time. Known as constant folding, yes. so you're saying that if I write a for-loop in Java that populates an array with constants from 1-1 and then a 2nd loop to add them up, it would happen at compile-time and i would get the same timing-result? Jim -- 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
Re: Simple way to get image from url
Ok that were good examples thanks
Final variant
add to project.clj
[clj-http 0.5.6]
add ref to lib in ns
(ns myapp.app
*(:require [clj-http.client :as client] ))*
function
(defn write-file [url]
(with-open [w (clojure.java.io/output-stream img.jpg )] ; output file
(.write w (:body (client/get url {:as :byte-array} ; here we get
image as byte-array
))
Which trlanslates to ( i hope i get it right ) :
Open file in stream mode (w) and write to it byte stream (image file ) from
url.
On Monday, October 15, 2012 1:06:19 PM UTC+4, Yakovlev Roman wrote:
Hi
I am pretty new to java world so as i found there is no simple way to get
image file from url like : http://example.com/image.jpg.
What i need just to get file from url and store it to db.
So we need to use buffer, stream and stuff to get file. I found this code
but i guess there is a way to get things simplier.
(defn fetch-data [url]
(let [con(- url java.net.URL. .openConnection)
fields (reduce (fn [h v]
(assoc h (.getKey v) (into [] (.getValue v
{} (.getHeaderFields con))
size (first (fields Content-Length))
in (java.io.BufferedInputStream. (.getInputStream con))
out(java.io.BufferedOutputStream.
(java.io.FileOutputStream. out.file)) ; *Here is our
file *
buffer (make-array Byte/TYPE 1024)]
; Not sure about that loop it's just prints size to repl if we don't need
that we can omit that part i guess
(loop [g (.read in buffer)
r 0]
(if-not (= g -1)
(do
(println r / size)
(.write out buffer 0 g)
(recur (.read in buffer) (+ r g)
(.close in)
(.close out)
(.disconnect con)))
(fetch-data http://google.com;)
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Re: CDS progress report, week 1
Great work guys! This is a great gift to the community. On Mon, Oct 15, 2012 at 7:01 PM, Wes Freeman freeman@gmail.com wrote: I've been watching the repo. Thanks for all the effort on this, guys. Wes On Mon, Oct 15, 2012 at 12:07 PM, Michael Klishin michael.s.klis...@gmail.com wrote: ## TL;DR The Clojure documentation project [1] started off quite actively. With several new guides and a dozen of contributors, the resource is already quite useful to newcomers to the language. We believe this is directly related to our straightforward contribution process. ## CDS Progress Report A week ago we announced the new Clojure Documentation Site [1] (a.k.a. CDS) effort. The level of activity in the first week exceeded our expectations and we thought it may be a good idea to publish periodic reports (every week or two) to give the Clojure community a better idea of what CDS shapes up to be and what it has to offer. So lets start. This is a report for the week ending October 14th, 2012. ## In a Gist In the first week of CDS, we have added * 2 new tutorials and 6 new and 2 expanded guides * About 4,000 lines of changes in the content directory (does not include CSS or toolchain-related changes) * 14 merged pull requests * 13 contributors * About 1,400 unique visitors * About 6,000 page views with average visit duration of 2 minutes and 10 seconds In addition, we have ironed out first issues in the contribution process and set up an IRC channel (`#clojure-doc` on `irc.freenode.net`) when contributors coordinate their work. ## New Content New tutorials: * Emacs for Clojure development: http://clojure-doc.org/articles/tutorials/emacs.html * Eclipse and Counterclockwise for Clojure development: http://clojure-doc.org/articles/tutorials/eclipse.html New guides: * clojure.core Overview: http://clojure-doc.org/articles/language/core_overview.html * Interoperability with Java: http://clojure-doc.org/articles/language/interop.html * Namespaces: http://clojure-doc.org/articles/language/namespaces.html * Polymorphism: Protocols and Multimethods: http://clojure-doc.org/articles/language/polymorphism.html * Collections and Sequences: http://clojure-doc.org/articles/language/collections_and_sequences.html * Clojure Glossary: http://clojure-doc.org/articles/language/glossary.html ## Updates Improved guides: * Functions: http://clojure-doc.org/articles/language/functions.html * Curated Clojure Library Directory: http://clojure-doc.org/articles/ecosystem/libraries_directory.html ## Thank You, Contributors CDS would not be possible without the following people who make Clojure community a better place: * Gareth Jones * John Gabriele * Claudio Perez Gamayo * gsnewmark * Phil Hagelberg * Lee Hinman * Michael Klishin * Julson Lim * Jake McCrary * Max Penet * Oleksandr Petrov * Robert Randolph * Yogthos 1. http://clojure-doc.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 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 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
Re: Evaluating an anonymous function with closure
Jim - FooBar(); jimpil1...@gmail.com writes: You add the numbers at compile time, and then time how long it takes to...do nothing to them, at runtime. You are comparing N to zero, not to some smaller factor of N. yes but this seems almost unbelievable...i mean for simple numeric operations this little trick could provide a tremendous speedup. No, not really. To add the numbers at compile-time, they need to be known at compile-time. That doesn't apply in almost all situations. If it would, you would just write 49995000 directly instead of (apply + (range 1)). Or in other words, your `plus` won't work with (let [maxno (gimme-max)] (plus (range maxno))) cause (eval (range max)) will complain about `maxno` being undefined. One example that does things like constant-folding like macrology is the unit conversion macro in Let Over Lambda that compiles to constants if both value and unit are given literally (recursively). 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
Re: Evaluating an anonymous function with closure
On 16/10/12 11:49, Tassilo Horn wrote: One example that does things like constant-folding like macrology is the unit conversion macro in Let Over Lambda that compiles to constants if both value and unit are given literally (recursively). unit conversion! this is exactly what i had in mind!!! when doing unit conversion we have all the numbers + the formula upfront! where can I find this macro that you're describing? Have you got the book? Could you copy and paste it here please? could the same be done in Java? Jim -- 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
Re: Evaluating an anonymous function with closure
Jim foo.bar jimpil1...@gmail.com writes: Hi Jim, One example that does things like constant-folding like macrology is the unit conversion macro in Let Over Lambda that compiles to constants if both value and unit are given literally (recursively). unit conversion! this is exactly what i had in mind!!! when doing unit conversion we have all the numbers + the formula upfront! where can I find this macro that you're describing? Have you got the book? Could you copy and paste it here please? You are lucky, the early chapters are online. See unit-of-time in http://letoverlambda.com/index.cl/guest/chap3.html defunits and defunits-chaining in http://letoverlambda.com/index.cl/guest/chap5.html There's also a Clojure version floating around the web, and I think I've seen it in some of Stu's presentations. But I think that doesn't try to compile to constants, e.g., it omits the defunits chaining part. could the same be done in Java? I think, Java compilers do a bit of constant folding for things like int x = 1 + 2 * 3; // - int x = 7; or final static int MAX=10; // ... int x = MAX + 1; // - int x = 11; 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
Re: Making CLJS output smaller
2012/10/16 David Nolen dnolen.li...@gmail.com Yep I think there are quite a few things like this. But I don't think we need an optimization pass for this paticular case (and I'm not saying that's not a good idea - see below). Hopefully we can a direct patch for this issue around top level deftypes/records. Certainly, such a simple optimization (omitting var reads in a statement context) could live in the emitter. The next stumbling block to a smaller clojurescript, however, is the global-hierarchy var, which doesn't get removed by the closure compiler. To shake that var, some closed world optimization could be utilized. I'd be happy to work on that, but I need compilation units in order to do that. Another use case for compilation units I can think of from the top of my head are constant pools. Definitely needs a Confluence page. I know several people are interested in this. I think it would be pretty sweet to provide common optimizations out of the box. Seems like I can't edit Confluence. Could somebody elevate my privileges? Is it OK if I create a page Compilation Units? kind regards -- 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
Re: Evaluating an anonymous function with closure
On Oct 16, 2012, at 5:16 AM, Jim foo.bar wrote: so you're saying that if I write a for-loop in Java that populates an array with constants from 1-1 and then a 2nd loop to add them up, it would happen at compile-time and i would get the same timing-result? Maybe, maybe not. Compilers are very smart these days, but I don't know if they can fold complex expressions like for-loops. -- 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
Re: Simple way to get image from url
another way to solve this, from
http://users.utu.fi/machra/posts/2011-08-24-2-reddit-clojure.html
(ns myapp.app
(:require [clojure.java.io :as io]))
(defn copy [uri file]
(with-open [in (io/input-stream uri)
out (io/output-stream file)]
(io/copy in out)))
On Tue, Oct 16, 2012 at 6:32 PM, Yakovlev Roman felix...@gmail.com wrote:
Ok that were good examples thanks
Final variant
add to project.clj
[clj-http 0.5.6]
add ref to lib in ns
(ns myapp.app
(:require [clj-http.client :as client] ))
function
(defn write-file [url]
(with-open [w (clojure.java.io/output-stream img.jpg )] ; output file
(.write w (:body (client/get url {:as :byte-array} ; here we get
image as byte-array
))
Which trlanslates to ( i hope i get it right ) :
Open file in stream mode (w) and write to it byte stream (image file ) from
url.
On Monday, October 15, 2012 1:06:19 PM UTC+4, Yakovlev Roman wrote:
Hi
I am pretty new to java world so as i found there is no simple way to get
image file from url like : http://example.com/image.jpg.
What i need just to get file from url and store it to db.
So we need to use buffer, stream and stuff to get file. I found this code
but i guess there is a way to get things simplier.
(defn fetch-data [url]
(let [con(- url java.net.URL. .openConnection)
fields (reduce (fn [h v]
(assoc h (.getKey v) (into [] (.getValue v
{} (.getHeaderFields con))
size (first (fields Content-Length))
in (java.io.BufferedInputStream. (.getInputStream con))
out(java.io.BufferedOutputStream.
(java.io.FileOutputStream. out.file)) ; Here is our
file
buffer (make-array Byte/TYPE 1024)]
; Not sure about that loop it's just prints size to repl if we don't need
that we can omit that part i guess
(loop [g (.read in buffer)
r 0]
(if-not (= g -1)
(do
(println r / size)
(.write out buffer 0 g)
(recur (.read in buffer) (+ r g)
(.close in)
(.close out)
(.disconnect con)))
(fetch-data http://google.com;)
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--
Zhitong He
Sun Yat-sen University
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Re: Making CLJS output smaller
On Tue, Oct 16, 2012 at 7:19 AM, Herwig Hochleitner hhochleit...@gmail.comwrote: Certainly, such a simple optimization (omitting var reads in a statement context) could live in the emitter. The next stumbling block to a smaller clojurescript, however, is the global-hierarchy var, which doesn't get removed by the closure compiler. To shake that var, some closed world optimization could be utilized. I'd be happy to work on that, but I need compilation units in order to do that. I'm aware of this one as well. But again I think we can and should do a quick fix in the compiler for this. Either the user used multimethods or they did not. These kind of simple approaches may seem hacky but I think the benefit to users in terms of code size today outweighs those concerns - the discussed fixes would be quite simple to remove when a more general optimization strategy is in place. -- 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
Re: Evaluating an anonymous function with closure
On 16/10/12 13:20, Michael Gardner wrote: On Oct 16, 2012, at 5:16 AM, Jim foo.bar wrote: so you're saying that if I write a for-loop in Java that populates an array with constants from 1-1 and then a 2nd loop to add them up, it would happen at compile-time and i would get the same timing-result? Maybe, maybe not. Compilers are very smart these days, but I don't know if they can fold complex expressions like for-loops. I see... so Clojure macros could indeed have the advantage over regular Java methods with regards to my trivial example? I do understand that most of the times you simply don't have the data at compile time but there must be occasions where you do and replacing a complex expression with a scalar might provide stunning performance...I've not had the time to go back to the project of mine where performance really really matters but I will soon do and let you know if I find anything... thanks again... Jim -- 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
Re: Simple way to get image from url
On 16/10/12 13:25, Zhitong He wrote: another way to solve this, from http://users.utu.fi/machra/posts/2011-08-24-2-reddit-clojure.html (ns myapp.app (:require [clojure.java.io :as io])) (defn copy [uri file] (with-open [in (io/input-stream uri) out (io/output-stream file)] (io/copy in out))) this looks nice...also, no dependencies - you can run this on your android! Jim -- 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
Re: Correct usage of data-readers
- is it appropriate to include data_readers.clj in a library - given that file is in the root? No. data_readers.clj is intended for application developers. Libraries may define data reader functions and suggest tags for consumers of that library. -S -- 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
Re: Smarter code reloading with tools.namespace 0.2.0
#FileNotFoundException java.io.FileNotFoundException: Could not locate clojure/tools/namespace__init.class or *clojure/tools/namespace.clj* on classpath: Now, somewhere in the code, something is looking for clojure.tools.namespace.clj. But that's just a directory in the projecthttps://github.com/clojure/tools.namespace/tree/master/src/main/clojure/clojure/tools/namespace. I can't see anywhere in the codebase that tries to use or require that file. Something must be trying to load 'clojure.tools.namespace', which was a real namespace in the tools.namespace 0.1.x releases. Perhaps something in Ritz is trying to load it. -S -- 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
Re: ANN: Clojure 1.3 and 1.4 Cheat Sheet v7
I noticed that the PDF downloads seems a bit off. At least in my case, the standard PDFhttps://github.com/jafingerhut/clojure-cheatsheets/blob/master/pdf/cheatsheet-usletter-color.pdf?raw=trueleaves alot of whitespace. -- 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
Re: Correct usage of data-readers
On Tuesday, October 16, 2012 9:07:49 AM UTC-4, Stuart Sierra wrote: - is it appropriate to include data_readers.clj in a library - given that file is in the root? No. data_readers.clj is intended for application developers. Libraries may define data reader functions and suggest tags for consumers of that library. Really? So take the ordered library as an example: https://github.com/flatland/ordered It defines #ordered/map and #ordered/set. That's not proper usage? If using data_readers.clj is truly discouraged for libs, that should be documented - perhaps in http://dev.clojure.org/display/design/Library+Coding+Standards? I can update it myself once I understand the rationale. Justin -- 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
Re: ANN: Clojure 1.3 and 1.4 Cheat Sheet v7
Yes, the PDF versions of the cheat sheet used to fit into 2 A4 or US letter sized pages quite nicely, before I started adding more things to it. Now I'm sure they can fit into 3 such pages quite nicely, but to fit into 2 would require reducing the font size. Since it no longer fit into 2, I haven't attempted to reorder the content to fit more nicely into 3. Do you have any use cases for the PDF that the HTML won't do? Andy On Oct 16, 2012, at 7:15 AM, Nick Klauer wrote: I noticed that the PDF downloads seems a bit off. At least in my case, the standard PDF leaves alot of whitespace. -- 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
Re: Smarter code reloading with tools.namespace 0.2.0
I tracked down the problem. Funny thing is that tools.namespace is failing when trying to reload the ring component inside of noir. Looking at * nrepl-ritz.el* (0.5.0), which uses *nrepl.el* (0.1.4), there are a few references to namespace. But I don't think that has anything to do with tools.namespace. So the thing trying to call clojure.tools.namespace, was when the (refresh) stacktrace got to *ring.middleware.reload*. Below is a curated stacktrace. nREPL server started on port 42939 java.io.FileNotFoundException: Could not locate clojure/tools/namespace__init.class or clojure/tools/namespace.clj on classpath: at clojure.lang.RT.load(RT.java:432) at clojure.lang.RT.load(RT.java:400) at clojure.core$load$fn__4890.invoke(core.clj:5415) at clojure.core$load.doInvoke(core.clj:5414) at clojure.lang.RestFn.invoke(RestFn.java:408) at clojure.core$load_one.invoke(core.clj:5227) at clojure.core$load_lib.doInvoke(core.clj:5264) at clojure.lang.RestFn.applyTo(RestFn.java:142) at clojure.core$apply.invoke(core.clj:603) at clojure.core$load_libs.doInvoke(core.clj:5298) at clojure.lang.RestFn.applyTo(RestFn.java:137) at clojure.core$apply.invoke(core.clj:605) at clojure.core$use.doInvoke(core.clj:5392) at clojure.lang.RestFn.invoke(RestFn.java:482) at ns_tracker.core$eval2801$loading__4784__auto2802.invoke(core.clj:1) at ns_tracker.core$eval2801.invoke(core.clj:1) at clojure.lang.Compiler.eval(Compiler.java:6511) ... at clojure.lang.RestFn.invoke(RestFn.java:408) *at ring.middleware.reload$eval2795$loading__4784__auto2796.invoke(reload.clj:1) * *at ring.middleware.reload$eval2795.invoke(reload.clj:1)* at clojure.lang.Compiler.eval(Compiler.java:6511) ... at clojure.lang.RestFn.invoke(RestFn.java:457) *at noir.server.handler$eval2789$loading__4784__auto2790.invoke(handler.clj:1) * *at noir.server.handler$eval2789.invoke(handler.clj:1)* at clojure.lang.Compiler.eval(Compiler.java:6511) ... at clojure.lang.RestFn.invoke(RestFn.java:421) *at noir.server$eval2145$loading__4784__auto2146.invoke(server.clj:1)* *at noir.server$eval2145.invoke(server.clj:1)* at clojure.lang.Compiler.eval(Compiler.java:6511) ... *at clojure.tools.namespace.reload$track_reload_one.invoke(reload.clj:35)* *at clojure.tools.namespace.reload$track_reload.invoke(reload.clj:52)* ... *at clojure.tools.nrepl.middleware.interruptible_eval$evaluate.invoke(interruptible_eval.clj:42) * *at clojure.tools.nrepl.middleware.interruptible_eval$interruptible_eval$fn__536$fn__538.invoke(interruptible_eval.clj:170) * at clojure.core$comp$fn__4034.invoke(core.clj:2278) at clojure.tools.nrepl.middleware.interruptible_eval$run_next$fn__529.invoke(interruptible_eval.clj:137) at clojure.lang.AFn.run(AFn.java:24) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) Digging through ring code is another kettle of fish. Does ring need to be updated? If so, tools.namespace will have to deal would these issues on a library by library basis. Thanks Tim On Tue, Oct 16, 2012 at 9:11 AM, Stuart Sierra the.stuart.sie...@gmail.comwrote: #FileNotFoundException java.io.FileNotFoundException: Could not locate clojure/tools/namespace__init.**class or *clojure/tools/namespace.clj* on classpath: Now, somewhere in the code, something is looking for clojure.tools.namespace.clj. But that's just a directory in the projecthttps://github.com/clojure/tools.namespace/tree/master/src/main/clojure/clojure/tools/namespace. I can't see anywhere in the codebase that tries to use or require that file. Something must be trying to load 'clojure.tools.namespace', which was a real namespace in the tools.namespace 0.1.x releases. Perhaps something in Ritz is trying to load it. -S -- 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
Re: Rouge: Ruby + Clojure
Finally came around to install a recent Ruby build and ran a little test script just to get a feel for the startup time. Looks good, though the faster the merrier. ~ $ ruby --version ruby 1.9.3p286 (2012-10-12 revision 37165) [x86_64-darwin10.8.0] ~/dev/tools/rouge $ cat test.clj (defn square [x] (* x x)) (defn fact [n] (if (= n 0) 1 (* n (fact (- n 1) (print (fact (square 3))) (print) ~/dev/tools/rouge $ time bin/rouge test.clj 362880 real 0m0.303s user 0m0.291s sys 0m0.011s ~/dev/tools/rouge $ time clj test.clj 362880 real 0m1.103s user 0m1.683s sys 0m0.127s On Friday, October 12, 2012 4:40:28 AM UTC-7, Arlen Christian Mart Cuss wrote: Hi all, I'd like to announce Rouge, which is an implementation of Clojure on Ruby. https://github.com/unnali/rouge#readme The readme above shows example of some Rouge code, most of which is currently taken from the boot file of Rouge itself. The thing is fully TDDed, so you can read the specs to see how (in)complete it is. :) I'd love it if you gave it a try, and let me know your thoughts and feedback. Even more than that, I'd love your contributions! Clojure is a beautiful language, and I'm really happy to be able to combine it with my other favourite language. Cheers, Arlen -- 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
ANN: Minderbinder v0.2.0
Minderbinder is a Clojure library for defining unit conversions available
at read, compile and run time.
More information is available on the [Minderbinder source
repo](https://github.com/fogus/minderbinder).
Use
Include the following in your
[Leiningen](https://github.com/technomancy/leiningen) project.clj file:
[fogus/minderbinder 0.2.0]
Or include the following in your pom.xml file in the `dependencies` section:
dependency
groupIdfogus/groupId
artifactIdminderbinder/artifactId
version0.2.0/version
/dependency
Examples
Minderbinder includes unit conversions for the following units of measure:
* [Time][t]: via `#unit/time`, base is `:milliseconds`, ns is
`minderbinder.time`
* [Length][l]: via `#unit/length`, base is `:meters`, ns is
`minderbinder.length`
* [Information][i]: via `#unit/info`, base is `:byte`, ns is
`minderbinder.information`
[t]:
https://github.com/fogus/minderbinder/blob/master/src/minderbinder/time.clj
[l]:
https://github.com/fogus/minderbinder/blob/master/src/minderbinder/length.clj
[i]:
https://github.com/fogus/minderbinder/blob/master/src/minderbinder/information.clj
Using Minderbinder's unit reader form
--
(ns minderbinder.test.core
(:require minderbinder.time))
(== #unit/time [1 :second]
#unit/time [1000 :ms])
;;= true
(== #unit/time [1 :minute 30 :seconds]
#unit/time [90 :seconds])
;;= true
Using Minderbinder's unit parse functions
-
(ns minderbinder.test.core
(:require [minderbinder.length :as mbr]))
(mbr/parse-length-unit [1 :km])
;;= 1000
(mbr/parse-length-unit [1 :ramsden-link])
;;= 381/1250
Defining custom conversion rules
Defining a unit conversion is accomplished via Minderbinder's `defunits-of`
macro. The body of the macro expects the following structure:
(defunits-of *unit-name* *base-unit-tag* *docstring* *conversion-spec*)
The *conversion spec* part of the body currently allows pairs of mappings
defined in reletive terms. The pairs always start with a keyword used as
the unit tag. However, the right-hand side of the pair can be one of the
following:
1. Number - defines the value of the unit relative to the base unit
2. Vector - defines the value of the unit relative to another contained
unit
3. Keyword - defines a single alias for a unit
4. Set - defined one or more aliases for a unit
A simplified version of Minderbinder's length conversion definition serves
as an example:
(defunits-of length :meter
The meter is the length of the path
traveled by light in vacuum during a
time interval of 1/299,792,458 of
a second.
:m :meter ;; an alias for the base unit
:km 1000 ;; a larger value relative to the base
unit
:km #{kilometer kilometers} ;; multiple aliases for a unit
:cm 1/100;; a smaller value relative to the base
:mm [1/10 :cm]) ;; a value relative to another unit
### Generated vars
The `defunits-of` macro will define three things in the namespace where the
`defunits-of` macro appears:
1. `parse-XXX-unit` - a function that parses the unit vector according to
the conversion spec, returning the total value relative to the base.
2. `unit-of-XXX`- a macro that allows the for `(unit-of-XXX 1 :foo)`
that returns the total value relative to the base.
3. `XXX-table` - a map describing the unit conversion rules.
Contributions welcomed!
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Re: Correct usage of data-readers
One data_readers.clj file can't override another: it's an error if they contain the same tags with different functions. So if a library defines its data reader tags, you can't override them *at read-time* in your app. You can always override readers dynamically at run-time by binding *data-readers*. -S -- 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
Re: Making CLJS output smaller
2012/10/16 David Nolen dnolen.li...@gmail.com I'm aware of this one as well. But again I think we can and should do a quick fix in the compiler for this. Either the user used multimethods or they did not. I don't see how such a quick fix could be done, without the compiler gaining a concept of the whole program, in which the user could have used MMs. In my understanding, the compiler, as it is right now, is fundamentally form-at-a-time, so at the point the global-hierarchy var already gets emitted, you can't possibly know if it will be used. Certainly, you are much more familiar with the implementation, do you see a point where this could already be hacked in? These kind of simple approaches may seem hacky but I think the benefit to users in terms of code size today outweighs those concerns - the discussed fixes would be quite simple to remove when a more general optimization strategy is in place. To be honest, the introduction of compile-unit is the simplest, most general solution I could come up with after some hammock time. Since it seems not to be an obiously bad idea, I'll stop here and get back to confluence with a fully thought out proposal + implementation. Feedback and alternate approaches still welcome. 2012/10/16 Andy Fingerhut andy.finger...@gmail.com Herwig: I've added you to a couple of groups (clojure-dev and jira-developers) on Confluence that you did not previously belong to. I'm not sure, but this may give you permission to edit Confluence. Let me know if you still cannot do so after receiving this message. Thank you! Unfortunately that didn't seem to help. In the top bar I have 2 menus Browse and my account. The tools menu on each page doesn't let me edit either. kind regards -- 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
Re: Making CLJS output smaller
On Tue, Oct 16, 2012 at 12:27 PM, Herwig Hochleitner hhochleit...@gmail.com wrote: 2012/10/16 David Nolen dnolen.li...@gmail.com I'm aware of this one as well. But again I think we can and should do a quick fix in the compiler for this. Either the user used multimethods or they did not. I don't see how such a quick fix could be done, without the compiler gaining a concept of the whole program, in which the user could have used MMs. In my understanding, the compiler, as it is right now, is fundamentally form-at-a-time, so at the point the global-hierarchy var already gets emitted, you can't possibly know if it will be used. Certainly, you are much more familiar with the implementation, do you see a point where this could already be hacked in? ClojureScript programmers benefit from the assumption of whole program optimization for production code. Also remember we have analyze-file. If these weren't true ClojureScript would not be anywhere near as fast as it currently is. Look at all the assumptions we can make when we compile a fn invocation form under advanced compilation. David -- 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
Re: Rouge: Ruby + Clojure
On Fri, Oct 12, 2012 at 4:40 AM, Arlen Christian Mart Cuss a...@len.me wrote: I'd like to announce Rouge, which is an implementation of Clojure on Ruby. Interesting project. What are you planning on doing about the fact that Ruby has mutable strings? Seems like that would be a deal-breaker for implementing Clojure's equality semantics. http://home.pipeline.com/~hbaker1/ObjectIdentity.html -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
Re: Making CLJS output smaller
2012/10/16 David Nolen dnolen.li...@gmail.com ClojureScript programmers benefit from the assumption of whole program optimization for production code. Also remember we have analyze-file. They most certainly do, but in my mind this assumption is only made in the google closure compiler, right now. I see analyze-file is used in the compiler to prepopulate an analysis environment with clojure.core. It still doesn't look at the whole program at once. IMO it wouldn't be a good fit to base optimizations on, since that would hardcode a compilation unit to be a file. Also, you couldn't remove multimethod infrastructure with it, since it would only know about a file at a time. If these weren't true ClojureScript would not be anywhere near as fast as it currently is. Look at all the assumptions we can make when we compile a fn invocation form under advanced compilation. Are you are talking about compile time optimization for invokations of fixed arity, protocols, keywords and clojure.core/not, by chance? Those are fine optimizations, but they don't depend on WPO or advanced mode. In my mental model, the cljs compiler generates the same intermediate javascript in all optimization levels. I have looked at cljs.analyzer/parse-invoke and cljs.compiler/emit :invoke but couldn't find any different code paths. Am I missing something? -- 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
Re: Making CLJS output smaller
None of the invocation optimizations make any sense for anything other that
advanced optimization. They hard code static assumptions that might get
invalidated in any compilation unit other than whole program.
We don't need to look at the whole program at once. Think about why we need
declare and most Clojure programs avoid it if they can.
I don't think we need any fancy compiler stuff to fix the two big dead code
issues in the near term.
On Tuesday, October 16, 2012, Herwig Hochleitner wrote:
2012/10/16 David Nolen dnolen.li...@gmail.com javascript:_e({}, 'cvml',
'dnolen.li...@gmail.com');
ClojureScript programmers benefit from the assumption of whole program
optimization for production code. Also remember we have analyze-file.
They most certainly do, but in my mind this assumption is only made in the
google closure compiler, right now.
I see analyze-file is used in the compiler to prepopulate an analysis
environment with clojure.core. It still doesn't look at the whole program
at once.
IMO it wouldn't be a good fit to base optimizations on, since that would
hardcode a compilation unit to be a file. Also, you couldn't remove
multimethod infrastructure with it, since it would only know about a file
at a time.
If these weren't true ClojureScript would not be anywhere near as fast as
it currently is. Look at all the assumptions we can make when we compile a
fn invocation form under advanced compilation.
Are you are talking about compile time optimization for invokations of
fixed arity, protocols, keywords and clojure.core/not, by chance? Those are
fine optimizations, but they don't depend on WPO or advanced mode.
In my mental model, the cljs compiler generates the same intermediate
javascript in all optimization levels. I have looked at
cljs.analyzer/parse-invoke and cljs.compiler/emit :invoke but couldn't find
any different code paths. Am I missing something?
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trampoline not compatible with reducers?
Hi everyone, I'm pretty sure i'm using trampoline the right way but still I get this exception: ClassCastException Clondie24.lib.search$search$minimize__3075$fn__3076 cannot be cast to java.lang.Number Clondie24.lib.search/search/minimize--3075 (search.clj:47) here is the code: (defn search The recursive bit of the min-max algorithm. [eval-fn tree depth] (letfn [(minimize ^double [tree d] (if (zero? d) (eval-fn (:root tree) (:direction tree)) #(r/reduce my-min (r/map (fn [child] (maximize (:tree child) (dec d))) (:children tree) (maximize ^double [tree d] (if (zero? d) (eval-fn (:root tree) (:direction tree)) #(r/reduce my-max (r/map (fn [child] (minimize (:tree child) (dec d))) (:children tree)] (trampoline minimize tree (int depth Can anyone shine some light? Is it something that has to do with reducers? Jim ps: it works fine without trampoline and '#' behind 'r/reduce'. -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: trampoline not compatible with reducers?
you are declaring the functions return doubles, but in fact returning functions or doubles On Tue, Oct 16, 2012 at 11:06 AM, Jim - FooBar(); jimpil1...@gmail.com wrote: Hi everyone, I'm pretty sure i'm using trampoline the right way but still I get this exception: ClassCastException Clondie24.lib.search$search$minimize__3075$fn__3076 cannot be cast to java.lang.Number Clondie24.lib.search/search/minimize--3075 (search.clj:47) here is the code: (defn search The recursive bit of the min-max algorithm. [eval-fn tree depth] (letfn [(minimize ^double [tree d] (if (zero? d) (eval-fn (:root tree) (:direction tree)) #(r/reduce my-min (r/map (fn [child] (maximize (:tree child) (dec d))) (:children tree) (maximize ^double [tree d] (if (zero? d) (eval-fn (:root tree) (:direction tree)) #(r/reduce my-max (r/map (fn [child] (minimize (:tree child) (dec d))) (:children tree)] (trampoline minimize tree (int depth Can anyone shine some light? Is it something that has to do with reducers? Jim ps: it works fine without trampoline and '#' behind 'r/reduce'. -- 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 -- And what is good, Phaedrus, And what is not good— Need we ask anyone to tell us these things? -- 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
Re: trampoline not compatible with reducers?
On 16/10/12 19:15, Kevin Downey wrote: you are declaring the functions return doubles, but in fact returning functions or doubles yes you're right (my bad) but the same thing happens without the type-hinting - albeit in a different place and different originating function: ClassCastException Clondie24.lib.search$search$maximize__3081$fn__3082 cannot be cast to java.lang.Number clojure.lang.Numbers.lt (Numbers.java:219) Jim -- 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
Re: Rouge: Ruby + Clojure
Hi Phil, On Wednesday, 17 October 2012 at 4:11 AM, Phil Hagelberg wrote: Interesting project. Thanks! What are you planning on doing about the fact that Ruby has mutable strings? Seems like that would be a deal-breaker for implementing Clojure's equality semantics. http://home.pipeline.com/~hbaker1/ObjectIdentity.html My initial solution is to freeze all strings in the reader. This prevents the most obvious issues, as it means any string read in from the Rouge code itself is immutable. The wider question of strings in Rouge code in general is going to be a concern, and something I'll probably have to mull over more shortly. :) There are some options (which I don't quite like), such as freezing strings on entry to Rouge code and duping them on exit. - Arlen -- 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
Re: Making CLJS output smaller
2012/10/16 David Nolen dnolen.li...@gmail.com None of the invocation optimizations make any sense for anything other that advanced optimization. But the invokations in javascript output work even when not using google closure at all, e.g. the REPL. They hard code static assumptions that might get invalidated in any compilation unit other than whole program. Partially agree: I would call those hard coded static assumptions an ABI (e.g. the naming convention for fixed arity invokations, or the invokation of a protocol fn) and compilation units would only work, when the APIs they consume have a matching ABI (this is true even now, you wouldn't compile parts of your project with different versions of clojurescript, would you?). We don't need to look at the whole program at once. Think about why we need declare and most Clojure programs avoid it if they can. We need declare, because clojure features a single pass compiler, and sometimes we want to code mutual recursion without letfn. The moral equivalent for the MM dead code issue would be a compiler flag to turn off multimethods, right?. Certainly doable. If you'd like me to implement that flag before turning to more comprehensive optimization, I'll do it. So yes, if we want to eliminate more dead code without having the user manually turn off features, I think we do need to look at the whole program, don't we? Please also note: I'm not proposing to get rid of the single pass semantics of clojure. Quite the opposite. After the analyzer is done with its single pass and has unambigously resolved everything, optimization passes are free to optimize, since the semantics are already established. I don't think we need any fancy compiler stuff to fix the two big dead code issues in the near term. I agree that the unused read issue can be generically solved in the emitter. For the one with unused toplevel vars like global-hierachy, I'm not so sure, especially if we also want to solve the problem for libraries, which arguably is a goal of clojurescript. -- 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
Re: Making CLJS output smaller
On Tue, Oct 16, 2012 at 2:41 PM, Herwig Hochleitner hhochleit...@gmail.comwrote: 2012/10/16 David Nolen dnolen.li...@gmail.com None of the invocation optimizations make any sense for anything other that advanced optimization. But the invokations in javascript output work even when not using google closure at all, e.g. the REPL. Yes because we don't try to optimize them. They hard code static assumptions that might get invalidated in any compilation unit other than whole program. Partially agree: I would call those hard coded static assumptions an ABI (e.g. the naming convention for fixed arity invokations, or the invokation of a protocol fn) and compilation units would only work, when the APIs they consume have a matching ABI (this is true even now, you wouldn't compile parts of your project with different versions of clojurescript, would you?). Start a CLJS REPL with :static-fns true. Make a function called foo. Call it from a function bar. Redef foo w/ different arities. Now call bar. This will not work. Same if you redef foo to be an instance of a deftype that implements IFn. We need declare, because clojure features a single pass compiler, and sometimes we want to code mutual recursion without letfn. The moral equivalent for the MM dead code issue would be a compiler flag to turn off multimethods, right?. Certainly doable. If you'd like me to implement that flag before turning to more comprehensive optimization, I'll do it. Either the user used multimethods or they did not. If they did emit the hierarchy. And only bother with this code size optimization during advanced compilation - just always emit the hierarchy otherwise. Please also note: I'm not proposing to get rid of the single pass semantics of clojure. Quite the opposite. After the analyzer is done with its single pass and has unambigously resolved everything, optimization passes are free to optimize, since the semantics are already established. Nothing I've said has anything do w/ optimization passes. Just how immediate problems could be solved without waiting for 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
Re: trampoline not compatible with reducers?
if you look further down the stacktrace (where it refers to your code instead of clojure.lang.Numbers.lt) it will give you line numbers in your code to look at. you are calling these trampolined functions without trampoline. On Tue, Oct 16, 2012 at 11:24 AM, Jim - FooBar(); jimpil1...@gmail.com wrote: On 16/10/12 19:15, Kevin Downey wrote: you are declaring the functions return doubles, but in fact returning functions or doubles yes you're right (my bad) but the same thing happens without the type-hinting - albeit in a different place and different originating function: ClassCastException Clondie24.lib.search$search$maximize__3081$fn__3082 cannot be cast to java.lang.Number clojure.lang.Numbers.lt (Numbers.java:219) Jim -- 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 -- And what is good, Phaedrus, And what is not good— Need we ask anyone to tell us these things? -- 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
Re: Smarter code reloading with tools.namespace 0.2.0
'ring-devel' depends on 'ns-tracker', which uses tools.namespace 0.1.3: https://github.com/weavejester/ns-tracker/blob/master/project.clj Dependency resolution will only allow one version of the library, so your project gets tools.namespace 0.2.0, not 0.1.3. The two releases are not compatible, which is documented in the README. This will have to be fixed in ring-devel and/or ns-tracker. -S -- 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
Re: trampoline not compatible with reducers?
'my-min' and 'my-max' simply wrap core/min core/max. You mean i have to trampoline these calls as well? return something like this? : #(r/reduce (trampoline my-max) ;;was my-max (r/map (fn [child] (minimize (:tree child) (dec d))) (:children tree))) Jim On 16/10/12 20:01, Kevin Downey wrote: if you look further down the stacktrace (where it refers to your code instead of clojure.lang.Numbers.lt) it will give you line numbers in your code to look at. you are calling these trampolined functions without trampoline. On Tue, Oct 16, 2012 at 11:24 AM, Jim - FooBar(); jimpil1...@gmail.com wrote: On 16/10/12 19:15, Kevin Downey wrote: you are declaring the functions return doubles, but in fact returning functions or doubles yes you're right (my bad) but the same thing happens without the type-hinting - albeit in a different place and different originating function: ClassCastException Clondie24.lib.search$search$maximize__3081$fn__3082 cannot be cast to java.lang.Number clojure.lang.Numbers.lt (Numbers.java:219) Jim -- 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 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
[ANN] Immutant 0.5.0 released
We released Immutant 0.5.0 today, with a few bugfixes and some new features. Some notable changes: * You can now easily run your tests inside the Immutant container via `lein immutant test` * We expose the Quartz job schedulers for each app, allowing you to use Quartzite instead of the Immutant job api, while still taking advantage of singleton jobs within a cluster We're hoping to have something we can call 1.0 by late fall or early winter (in the northern hemisphere, that is). Learn more at http://bit.ly/immutant050 # What is Immutant? Immutant is an application server for Clojure. It's an integrated platform built on JBoss AS7 that aims to reduce the incidental complexity in real-world applications. It provides support for Ring handlers, asynchronous messaging, caching, scheduled jobs, XA transactions, clustering, and daemons. Let us know if you have any questions or issues. --- Toby Crawley http://torquebox.org | http://immutant.org -- 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
Re: Smarter code reloading with tools.namespace 0.2.0
Timothy Washington twash...@gmail.com writes: 2) Running emacs with nrepl.el. I fire up *M-x nrepl-ritz-jack-in* ritz-repl-utils includes a namespace dependency graph in ritz.repl-utils.namespaces. It doesn't yet include a refresh type function, but that would be straightforward to add on top of a call to `(transitive-dependencies (direct-dependencies))`. Hugo -- 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
ANN: zombie 0.2.0
Zombie is a Clojure framework for semantic transformations of map-based data. It's often useful in testing to abstractly state how two pieces of data are different, rather than explicitly conjure up concrete values. I hope this helps to capture the essence of tests better, especially for tests that persist a plethora of data and perform queries to retrieve it. https://github.com/MichaelDrogalis/zombie Suggestions very much welcomed to make this better. :) -- 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
parallel alpha-beta pruning possible?
After watching this presentation[1] by Brian Goetz, in which he discusses the fork-join framework and how it is intended to be used I was left with a major question. Around the end of the talk he said and I quote ...fork-join can be used for game-tree exploration... while the slides actually had -Move generation -Alpha-beta ... As soon as I saw/heard that I almost fell of my chair!!! He caught me completely by surprise simply because I've given this quite a bit of though myself... NOw, I'm not implying that I am nowhere near as smart or informed as he is but the 'objection' I have is pretty simple. I already have a parallel minimax (some of you have actually helped) so I know how that's done and it wasn't too hard because minimax is exhaustive search. No heuristics whatsoever...as long as you work with immutable data-structures God is on your side and all is well! HOWEVER, as soon as you introduce heuristics (even simplistic like alpha-beta pruning) you 've lost the ability to split the work in pieces. You've suddenly introduced coordination which only makes sense in a serial fashion. Since pruning a particular branch of the game-tree requires knowing how the previous branch did how can you ever fork? What if these 2 branches are on separate threads? How can you ever do that without locking? I am very excited that someone like Brian Goetz is claiming something like this even though I don't understand how such an inherently serial process could be efficiently forked. Can anyone help? [1] http://www.infoq.com/presentations/brian-goetz-concurrent-parallel Jim -- 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
Re: [ANN] Immutant 0.5.0 released
It looks great, well done... waiting for the 1.0... -- 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
Re: trampoline not compatible with reducers?
Reducers don't enter into the picture at all: this code is just as broken with clojure.core/reduce and clojure.core/map. The immediate problem that Kevin is trying to draw your attention to is that you are calling (reduce max (map my-fn coll)), where my-fn sometimes returns a number, and sometimes a thunk. Obviously max can't be expected to compare thunks for you, so that's no good. His suggestion is to make sure to trampoline the results of (map my-fn coll) until you get out a list of numbers, and then find the max. But really I don't think trampoline is a very compelling problem- solver here: the primary (only?) gain from trampoline is in reducing stack depth, and I rather doubt that you can calculate minimax for even a few hundred ply. So you're in no danger of a stackoverflow, but are sacrificing readability and a smidge of performance to keep your stack really small instead of not big enough to be a problem. On Oct 16, 12:45 pm, Jim - FooBar(); jimpil1...@gmail.com wrote: 'my-min' and 'my-max' simply wrap core/min core/max. You mean i have to trampoline these calls as well? return something like this? : #(r/reduce (trampoline my-max) ;;was my-max (r/map (fn [child] (minimize (:tree child) (dec d))) (:children tree))) Jim On 16/10/12 20:01, Kevin Downey wrote: if you look further down the stacktrace (where it refers to your code instead of clojure.lang.Numbers.lt) it will give you line numbers in your code to look at. you are calling these trampolined functions without trampoline. On Tue, Oct 16, 2012 at 11:24 AM, Jim - FooBar(); jimpil1...@gmail.com wrote: On 16/10/12 19:15, Kevin Downey wrote: you are declaring the functions return doubles, but in fact returning functions or doubles yes you're right (my bad) but the same thing happens without the type-hinting - albeit in a different place and different originating function: ClassCastException Clondie24.lib.search$search$maximize__3081$fn__3082 cannot be cast to java.lang.Number clojure.lang.Numbers.lt (Numbers.java:219) Jim -- 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 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
Re: parallel alpha-beta pruning possible?
You will get better results from a game-programming forum, or indeed from a google search for parallel alpha beta than from a bunch of clojure guys with no particular experience in your problem domain. On Oct 16, 1:27 pm, Jim - FooBar(); jimpil1...@gmail.com wrote: After watching this presentation[1] by Brian Goetz, in which he discusses the fork-join framework and how it is intended to be used I was left with a major question. Around the end of the talk he said and I quote ...fork-join can be used for game-tree exploration... while the slides actually had -Move generation -Alpha-beta ... As soon as I saw/heard that I almost fell of my chair!!! He caught me completely by surprise simply because I've given this quite a bit of though myself... NOw, I'm not implying that I am nowhere near as smart or informed as he is but the 'objection' I have is pretty simple. I already have a parallel minimax (some of you have actually helped) so I know how that's done and it wasn't too hard because minimax is exhaustive search. No heuristics whatsoever...as long as you work with immutable data-structures God is on your side and all is well! HOWEVER, as soon as you introduce heuristics (even simplistic like alpha-beta pruning) you 've lost the ability to split the work in pieces. You've suddenly introduced coordination which only makes sense in a serial fashion. Since pruning a particular branch of the game-tree requires knowing how the previous branch did how can you ever fork? What if these 2 branches are on separate threads? How can you ever do that without locking? I am very excited that someone like Brian Goetz is claiming something like this even though I don't understand how such an inherently serial process could be efficiently forked. Can anyone help? [1]http://www.infoq.com/presentations/brian-goetz-concurrent-parallel Jim -- 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
Re: parallel alpha-beta pruning possible?
On 16/10/12 21:48, Alan Malloy wrote: You will get better results from a game-programming forum, or indeed from a google search for parallel alpha beta than from a bunch of clojure guys with no particular experience in your problem domain. The question is more around JDK7 and reducers. Google gives me loads of results but it's all the traditional 'lock and suffer' approach. What I meant is basically this: let's forget about parallelism for a second...once someone has minimax ready it is a matter of minutes to turn it into an alpha-beta but in doing so you introduce dependencies between the branches and this is fine in a serial scenario. The minute forking occurs however you lose coordination capabilities (at least this is my understanding). He said it very casually in the video that is why this has been bugging me so much... obviously I'm wrong I'm just trying to find someone that knows a lot around reducers/fork-join t give me clues...thanks for your time anyway :-) Jim -- 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
Re: parallel alpha-beta pruning possible?
scenario. The minute forking occurs however you lose coordination capabilities (at least this is my understanding). He said it very casually in the video that is why this has been bugging me so much... Fork/Join is just threads, so I'm not sure why you'd lose coordination capabilities. You can use all the normal coordination stuff like locks and mutexes, etc. Granted, it won't be pretty :) jack. -- 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
ANN: LibTetris and cljs-tetris
So the time had come to make a library version of my Tetris-project. [libtetris 0.1.0] github: https://github.com/bonega/libtetrishttps://github.com/bonega/libtetris There is even some documentationhttp://bonega.github.com/libtetris/index.htmlthanks to Marginalia. I have ported my Clojurescript-tetris to use said library. https://github.com/bonega/cljs-tetris Play it here: http://bonega.github.com/cljs-tetris/index.html Libtetris have no dependencies on Clojurescript, it is a standard Clojure library. I am very satisfied that we can develop our backbone libraries mostly in isolation and then reuse them in Clojurescript with crossover. Have fun. -- 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
AOT-compilation, record types and DynamicClassLoader
I have a problem where I am trying to do an isa? or instance? check on an object of a record type which is defined in an AOT-compiled namespace. The isa? check fails because -- under circumstances which I do not yet well understand -- the object I actually have is an instance of its class in a clojure.lang.DynamicClassLoader, whereas a reference to the class by its literal name yields the class in the base sun.misc.Launcher$AppClassLoader. My Clojure code is compiled into a jar which is included into a Jetty server whose app code is largely written in Java. Here is an example which illustrates the problem: ;; src/foo/core.clj (ns foo.core) (defrecord T [a b]) ;; project.clj (defproject foo 1.0.0-SNAPSHOT :dependencies [[org.clojure/clojure 1.4.0]] :aot [foo.core]) Now if I add the artifact foo/foo as a Maven dependency of the Jetty server, and attach a liverepl to the running server (without taking any action to call the Clojure code from Java), I see the following: Clojure 1.4.0 user= (require '[foo.core]) nil user= (.getClassLoader foo.core.T) #AppClassLoader sun.misc.Launcher$AppClassLoader@a6eb38a user= (.getClassLoader (type (foo.core.T. 1 2))) #AppClassLoader sun.misc.Launcher$AppClassLoader@a6eb38a user= (.getClassLoader (type (foo.core/-T 1 2))) #DynamicClassLoader clojure.lang.DynamicClassLoader@433d3253 My actual case is more complicated, but the principle is the same: instances of foo.core.T which were built by the defrecord constructor function -T do not inhabit the AppClassLoader version of the class, but rather a DynamicClassLoader version. The result is that instance? or instanceof checks -- whether in my own Clojure code or in that of Java clients of my library who are trying to downcast -- do not behave as expected. This example cannot be reduced too far: if one just builds an uberjar and invokes a repl on the Clojure library alone, using 'java -cp target/foo-1.0.0-SNAPSHOT-standalone.jar clojure.main', the result is different: Clojure 1.4.0 user= (require '[foo.core]) nil user= (.getClassLoader foo.core.T) #AppClassLoader sun.misc.Launcher$AppClassLoader@43be2d65 user= (.getClassLoader (type (foo.core.T. 1 2))) #AppClassLoader sun.misc.Launcher$AppClassLoader@43be2d65 user= (.getClassLoader (type (foo.core/-T 1 2))) #AppClassLoader sun.misc.Launcher$AppClassLoader@43be2d65 Unfortunately I don't understand enough about the Clojure class loading mechanism to understand what might be causing the DynamicClassLoader to be invoked in one case and not the other. This problem seems to have been described by Ryan Senior about 20 months ago on clojure-dev, but I do not find any follow-up posts: https://groups.google.com/forum/?fromgroups=#!topic/clojure-dev/VBJFMEFBeFY Can anyone shed light on the situation? thanks, Chris Jeris -- Chris Jeris cje...@brightcove.com (617) 686-3271 freenode/twitter/github: ystael -- 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
Re: Making CLJS output smaller
2012/10/16 David Nolen dnolen.li...@gmail.com But the invokations in javascript output work even when not using google closure at all, e.g. the REPL. Yes because we don't try to optimize them. And suppose one tried to optimize them: With an established concept of compilation units, it's straightforward to optimize invokations within a unit and keep a compatible invokation ABI of its public members with following effect: - single form units (REPL) work - whole program units (Clojurescript) work - namespace/file units (Clojurescript with a JVM backend, hypothetically) work Again, getting ahead of myself here. Start a CLJS REPL with :static-fns true. Make a function called foo. Call it from a function bar. Redef foo w/ different arities. Now call bar. This will not work. Same if you redef foo to be an instance of a deftype that implements IFn. Thanks for raising that point. So IFn call is different from an aritiy call is different from a protocol call in clojurescripts informally defined ABI (with :static-fns). This has to be considered when thinking about compilation units. We need declare, because clojure features a single pass compiler, and sometimes we want to code mutual recursion without letfn. The moral equivalent for the MM dead code issue would be a compiler flag to turn off multimethods, right?. Certainly doable. If you'd like me to implement that flag before turning to more comprehensive optimization, I'll do it. Either the user used multimethods or they did not. If they did emit the hierarchy. And only bother with this code size optimization during advanced compilation - just always emit the hierarchy otherwise. The emitter still can not look ahead in its single pass, but thinking about it, it seems to me your proposal could be implemented by lazily initializing global-hierachy in derive. Please also note: I'm not proposing to get rid of the single pass semantics of clojure. Quite the opposite. After the analyzer is done with its single pass and has unambigously resolved everything, optimization passes are free to optimize, since the semantics are already established. Nothing I've said has anything do w/ optimization passes. Just how immediate problems could be solved without waiting for that ;) Ack, I think I'll try the two simple fixes first ;) -- 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
Re: Making CLJS output smaller
On Tue, Oct 16, 2012 at 5:38 PM, Herwig Hochleitner hhochleit...@gmail.comwrote: The emitter still can not look ahead in its single pass, but thinking about it, it seems to me your proposal could be implemented by lazily initializing global-hierachy in derive. Sounds good! Please also note: I'm not proposing to get rid of the single pass semantics of clojure. Quite the opposite. After the analyzer is done with its single pass and has unambigously resolved everything, optimization passes are free to optimize, since the semantics are already established. Nothing I've said has anything do w/ optimization passes. Just how immediate problems could be solved without waiting for that ;) Ack, I think I'll try the two simple fixes first ;) ;) -- 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
Re: A/B testing in Clojure?
I haven't but will be needing to do so in the next month or two. I'd be interested to hear if you made any progress and possibly in collaborating. Jon On Monday, October 8, 2012 11:04:10 AM UTC-3, Simon Holgate wrote: Hi, Is anyone doing split (A/B) testing in Clojure? What are you using? Any pointers on things to consider if I'm implementing it myself? Thanks, Simon -- 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
Hiccup - HTML - PNG
Has anyone generated PNGs (or any image) from Hiccup in Clojure? I see an older Java library for this: http://code.google.com/p/java-html2image/ Curious to hear about any experience with this library, or if there is a better solution out there. Thanks, Nick. -- 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
Re: parallel alpha-beta pruning possible?
I would probably look at the work that Robert Hyatt has done around parallel search in Crafty. He's published his findings far and wide and may still be active online. He's a wealth of information and fairly nice guy. -- -- http://blog.fogus.me -- http://github.com/fogus -- -- 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
gen-class :exposes field access
Hi,
I'm trying to create a class, instances of which need to access protected
fields of the superclass's superclass. But, I am failing so far. Is this a
bug or am I doing something wrong:
java:
package com.example;
public class Example {
protected static String PROTECTED_FIELD = this is a field;
public void asdf() { }
}
clojure:
(ns test.example
(:import (com.example Example)))
(gen-class
:name test.Example
:extends com.example.Example
:main false
:exposes {PROTECTED_FIELD {:get getProtectedField :set setProtectedField}}
:methods [[fieldInfo [] void]])
(defn -fieldInfo [this]
(println (.getProtectedField this)))
java:
Example e = new Example();
e.fieldInfo();
results in:
Exception in thread main java.lang.IllegalArgumentException: No matching
field found: getProtectedField for class test.Example
at clojure.lang.Reflector.getInstanceField(Reflector.java:271)
at clojure.lang.Reflector.invokeNoArgInstanceMember(Reflector.java:300)
at test.example$_fieldInfo.invoke(example.clj:16)
at test.Example.fieldInfo(Unknown Source)
at tests.Tests.main(Tests.java:47)
Oddly also, this:
System.out.println(e.getProtectedField());
prints the field.
I've tried numerous variations on this.
Do you have any ideas before I file a bug? (aside from make a wrapper
class).
--
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Cdr car
Hello - I was familar with lisp years ago and am very new to clojure. I am having a hard time understanding how to find 'car' and 'cdr'. The nice thing about these functions is they always seem to be a part of lisp. I would like to use the little lisper to teach lisp to my co-workers so that we can adopt Clojure. How can i import cdr or car? I know i can write these manually or alias them to 'first' and 'rest' - are they a part of the language? Cons appears to be around. -- 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
Re: Cdr car
`car` is called `first` here and `cdr` could mean either `rest` or `next` depending on what you mean/need. And oh, `cons` is not exactly the same one from Common Lisp, etc. Regards, BG On Tue, Oct 16, 2012 at 3:40 PM, Curtis cur...@ram9.cc wrote: Hello - I was familar with lisp years ago and am very new to clojure. I am having a hard time understanding how to find 'car' and 'cdr'. The nice thing about these functions is they always seem to be a part of lisp. I would like to use the little lisper to teach lisp to my co-workers so that we can adopt Clojure. How can i import cdr or car? I know i can write these manually or alias them to 'first' and 'rest' - are they a part of the language? Cons appears to be around. -- 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 -- Baishampayan Ghose b.ghose at gmail.com -- 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
Re: Cdr car
Curtis: You can do this if you want: (def car first) (def cdr rest) but most people accustomed to Clojure would be much more familiar with first and rest. The Content of the Address and Data Registers haven't been applicable for a long time, but it wasn't only the names that are changed -- first and rest work on all kinds of data structures besides lists, and return implementations of a sequence abstraction, not necessarily pointers to cons cells. Andy On Oct 16, 2012, at 3:40 PM, Curtis wrote: Hello - I was familar with lisp years ago and am very new to clojure. I am having a hard time understanding how to find 'car' and 'cdr'. The nice thing about these functions is they always seem to be a part of lisp. I would like to use the little lisper to teach lisp to my co-workers so that we can adopt Clojure. How can i import cdr or car? I know i can write these manually or alias them to 'first' and 'rest' - are they a part of the language? Cons appears to be around. -- 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
Re: Cdr car
A number of classic lisp books have been translated to clojure, for instance http://juliangamble.com/blog/2012/07/20/the-little-schemer-in-clojure/ Personally I felt relieved when I saw that clojure had abandoned the anachronistic car/cdr stuff; the sequence abstraction is a lot nicer. There are also a number of excellent clojure books you might want to check out as well, which might appeal to the more practical minded among the coworkers. On Tue, Oct 16, 2012 at 6:40 PM, Curtis cur...@ram9.cc wrote: Hello - I was familar with lisp years ago and am very new to clojure. I am having a hard time understanding how to find 'car' and 'cdr'. The nice thing about these functions is they always seem to be a part of lisp. I would like to use the little lisper to teach lisp to my co-workers so that we can adopt Clojure. How can i import cdr or car? I know i can write these manually or alias them to 'first' and 'rest' - are they a part of the language? Cons appears to be around. -- 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 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
Re: [ANN] Immutant 0.5.0 released
2012/10/16 Toby Crawley t...@tcrawley.org * We expose the Quartz job schedulers for each app, allowing you to use Quartzite instead of the Immutant job api, while still taking advantage of singleton jobs within a cluster Nice, thank you! -- 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
ClojureScript: how to call a js method when you have the method-string?
I understand that you can call js-methods and get properties thru: (.a-method some-js-object param) and (.-a-prop some-js-object) respectively, but how do you invoke either when you have the method/property as a string? The following doesn't seem to work: (let [m a-method dot-m (symbol (str . m)] (dot-m some-js-object)) or (let [m a-prop dot--m (symbol (str .- m)] (dot--m some-js-object)) And I cannot find any simple function interface for this. I must be overlooking something - please… Thanks, FrankS. -- 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
Re: AOT-compilation, record types and DynamicClassLoader
have you cleaned out the classes/ directory recently? AOT'ing, deftypes/defrecords, and lein when combined can exhibit issues with stale generate classes for deftypes/defrecords. I would also try adding (:gen-class) to your ns form. AOT compilation is effectively a nop for the namespace without it, except for any deftypes/records/protocols in the namespace, so a possible place for those to get out of sync with the rest of the code. DynamicClassloader generally means some compilation (code generation) has happened, if a namespace has been AOT'ed the generate classes will be loaded and the DynamicClassloader isn't required. On Tue, Oct 16, 2012 at 2:17 PM, Chris Jeris cje...@brightcove.com wrote: I have a problem where I am trying to do an isa? or instance? check on an object of a record type which is defined in an AOT-compiled namespace. The isa? check fails because -- under circumstances which I do not yet well understand -- the object I actually have is an instance of its class in a clojure.lang.DynamicClassLoader, whereas a reference to the class by its literal name yields the class in the base sun.misc.Launcher$AppClassLoader. My Clojure code is compiled into a jar which is included into a Jetty server whose app code is largely written in Java. Here is an example which illustrates the problem: ;; src/foo/core.clj (ns foo.core) (defrecord T [a b]) ;; project.clj (defproject foo 1.0.0-SNAPSHOT :dependencies [[org.clojure/clojure 1.4.0]] :aot [foo.core]) Now if I add the artifact foo/foo as a Maven dependency of the Jetty server, and attach a liverepl to the running server (without taking any action to call the Clojure code from Java), I see the following: Clojure 1.4.0 user= (require '[foo.core]) nil user= (.getClassLoader foo.core.T) #AppClassLoader sun.misc.Launcher$AppClassLoader@a6eb38a user= (.getClassLoader (type (foo.core.T. 1 2))) #AppClassLoader sun.misc.Launcher$AppClassLoader@a6eb38a user= (.getClassLoader (type (foo.core/-T 1 2))) #DynamicClassLoader clojure.lang.DynamicClassLoader@433d3253 My actual case is more complicated, but the principle is the same: instances of foo.core.T which were built by the defrecord constructor function -T do not inhabit the AppClassLoader version of the class, but rather a DynamicClassLoader version. The result is that instance? or instanceof checks -- whether in my own Clojure code or in that of Java clients of my library who are trying to downcast -- do not behave as expected. This example cannot be reduced too far: if one just builds an uberjar and invokes a repl on the Clojure library alone, using 'java -cp target/foo-1.0.0-SNAPSHOT-standalone.jar clojure.main', the result is different: Clojure 1.4.0 user= (require '[foo.core]) nil user= (.getClassLoader foo.core.T) #AppClassLoader sun.misc.Launcher$AppClassLoader@43be2d65 user= (.getClassLoader (type (foo.core.T. 1 2))) #AppClassLoader sun.misc.Launcher$AppClassLoader@43be2d65 user= (.getClassLoader (type (foo.core/-T 1 2))) #AppClassLoader sun.misc.Launcher$AppClassLoader@43be2d65 Unfortunately I don't understand enough about the Clojure class loading mechanism to understand what might be causing the DynamicClassLoader to be invoked in one case and not the other. This problem seems to have been described by Ryan Senior about 20 months ago on clojure-dev, but I do not find any follow-up posts: https://groups.google.com/forum/?fromgroups=#!topic/clojure-dev/VBJFMEFBeFY Can anyone shed light on the situation? thanks, Chris Jeris -- Chris Jeris cje...@brightcove.com (617) 686-3271 freenode/twitter/github: ystael -- 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 -- And what is good, Phaedrus, And what is not good— Need we ask anyone to tell us these things? -- 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
Clojure turns 5
I released Clojure 5 years ago today. It's been a terrific ride so far. Thanks to everyone who contributes to making Clojure, and its community, great. Rich -- 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
Re: Clojure turns 5
Happy Birthday Clojure. And thanks Rich! On 16 October 2012 18:54, Rich Hickey richhic...@gmail.com wrote: I released Clojure 5 years ago today. It's been a terrific ride so far. Thanks to everyone who contributes to making Clojure, and its community, great. Rich -- 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 -- David Jagoe davidja...@gmail.com +18053284389 -- 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
Re: Clojure turns 5
That's huge! Time flies. Happy Birthday Clojure and thank you very much Rich for creating Clojure and fostering this amazing community. Regards, BG On Tue, Oct 16, 2012 at 6:54 PM, Rich Hickey richhic...@gmail.com wrote: I released Clojure 5 years ago today. It's been a terrific ride so far. Thanks to everyone who contributes to making Clojure, and its community, great. Rich -- 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 -- Baishampayan Ghose b.ghose at gmail.com -- 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
Re: Clojure turns 5
Whoo hoo!! Party!!! Thanks to everyone, especially Rich, for creating and contributing to Clojure. :) --- Joseph Smith j...@uwcreations.com @solussd On Oct 16, 2012, at 8:54 PM, Rich Hickey richhic...@gmail.com wrote: I released Clojure 5 years ago today. It's been a terrific ride so far. Thanks to everyone who contributes to making Clojure, and its community, great. Rich -- 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 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
Re: Clojure turns 5
Thanks to everyone. This community is transforming software engineering in a great way. On Tuesday, October 16, 2012 10:01:29 PM UTC-4, solussd wrote: Whoo hoo!! Party!!! Thanks to everyone, especially Rich, for creating and contributing to Clojure. :) --- Joseph Smith j...@uwcreations.com javascript: @solussd On Oct 16, 2012, at 8:54 PM, Rich Hickey richh...@gmail.com javascript: wrote: I released Clojure 5 years ago today. It's been a terrific ride so far. Thanks to everyone who contributes to making Clojure, and its community, great. Rich -- 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 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
Re: Clojure turns 5
Thank you for clojure. Using clojure has exposed me to new ideas and made be a better programmer. I consider myself lucky to be able to use it every day at work. -- 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
Re: Clojure turns 5
Congratulations Rich, http://3.bp.blogspot.com/_F0yEiHzEaRc/S1NUOQ1kNeI/C14/cAUqKY8nISk/s1600-h/HappyBdayFiveCandles.jpg You can try to blow the candles :) Happy birthday ! Luc I released Clojure 5 years ago today. It's been a terrific ride so far. Thanks to everyone who contributes to making Clojure, and its community, great. Rich -- 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 -- Softaddictslprefonta...@softaddicts.ca sent by ibisMail from my ipad! -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en
Re: Clojure turns 5
Congrats! On Tuesday, October 16, 2012, Rich Hickey wrote: I released Clojure 5 years ago today. It's been a terrific ride so far. Thanks to everyone who contributes to making Clojure, and its community, great. Rich -- You received this message because you are subscribed to the Google Groups Clojure group. To post to this group, send email to clojure@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+unsubscr...@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 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
Re: Rouge: Ruby + Clojure
On Oct 16, 2012, at 1:19 PM, Arlen Cuss wrote: My initial solution is to freeze all strings in the reader. This prevents the most obvious issues, as it means any string read in from the Rouge code itself is immutable. A problem with `freeze` in Ruby is that it both prevents changing the contents of an object and also the methods attached to it. I find it useful sometimes to take an immutable object and create a new object with a different interpretation: hash.become(TimesliceShaped) What that does is produce an object with some new singleton methods. That lets me do something like Clojure's `-` or the common Ruby boxcar notation: timeslice.transform.update It makes the code more readable. This is also vaguely analogous to multimethods. The point is that we want the functions applicable to an object to be mutable but the contents of the object to be immutable. - Brian Marick, Artisanal Labrador Contract programming in Ruby and Clojure Occasional consulting on Agile Writing /Functional Programming for the Object-Oriented Programmer/: https://leanpub.com/fp-oo -- 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
Re: ClojureScript: how to call a js method when you have the method-string?
I think the easiest solution is to use aget and aset. There may be a better way, but if so I'm not aware of it. http://stackoverflow.com/questions/9861485/clojurescript-interop On Tuesday, October 16, 2012 6:21:45 PM UTC-7, FrankS wrote: I understand that you can call js-methods and get properties thru: (.a-method some-js-object param) and (.-a-prop some-js-object) respectively, but how do you invoke either when you have the method/property as a string? The following doesn't seem to work: (let [m a-method dot-m (symbol (str . m)] (dot-m some-js-object)) or (let [m a-prop dot--m (symbol (str .- m)] (dot--m some-js-object)) And I cannot find any simple function interface for this. I must be overlooking something - please… Thanks, FrankS. -- 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
Re: ClojureScript: how to call a js method when you have the method-string?
Thanks - that works - that was too easy ;-) I looked at the docstring before of aget because I remembered vaguely that that was how it used to work before .- : cljs.core/aget - Function ([array i] [array i idxs]) Returns the value at the index. Dismissed it for object-access after reading that… guess we can improve on the clarity of the docstring a little. -FS. On Oct 16, 2012, at 8:20 PM, Evan Mezeske emeze...@gmail.com wrote: I think the easiest solution is to use aget and aset. There may be a better way, but if so I'm not aware of it. http://stackoverflow.com/questions/9861485/clojurescript-interop On Tuesday, October 16, 2012 6:21:45 PM UTC-7, FrankS wrote: I understand that you can call js-methods and get properties thru: (.a-method some-js-object param) and (.-a-prop some-js-object) respectively, but how do you invoke either when you have the method/property as a string? The following doesn't seem to work: (let [m a-method dot-m (symbol (str . m)] (dot-m some-js-object)) or (let [m a-prop dot--m (symbol (str .- m)] (dot--m some-js-object)) And I cannot find any simple function interface for this. I must be overlooking something - please… Thanks, FrankS. -- 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
Re: ClojureScript: how to call a js method when you have the method-string?
Hmm after reading that docstring, /me hopes he didn't just recommend something for its not-intended purpose :) On Tuesday, October 16, 2012 8:29:47 PM UTC-7, FrankS wrote: Thanks - that works - that was too easy ;-) I looked at the docstring before of aget because I remembered vaguely that that was how it used to work before .- : cljs.core/aget - Function ([array i] [array i idxs]) Returns the value at the index. Dismissed it for object-access after reading that… guess we can improve on the clarity of the docstring a little. -FS. On Oct 16, 2012, at 8:20 PM, Evan Mezeske emez...@gmail.com javascript: wrote: I think the easiest solution is to use aget and aset. There may be a better way, but if so I'm not aware of it. http://stackoverflow.com/questions/9861485/clojurescript-interop On Tuesday, October 16, 2012 6:21:45 PM UTC-7, FrankS wrote: I understand that you can call js-methods and get properties thru: (.a-method some-js-object param) and (.-a-prop some-js-object) respectively, but how do you invoke either when you have the method/property as a string? The following doesn't seem to work: (let [m a-method dot-m (symbol (str . m)] (dot-m some-js-object)) or (let [m a-prop dot--m (symbol (str .- m)] (dot--m some-js-object)) And I cannot find any simple function interface for this. I must be overlooking something - please… Thanks, FrankS. -- 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
Re: ClojureScript: how to call a js method when you have the method-string?
Looking at the source of cljs.core/js-clj, I see that aget is also used to access the object properties by name-string… So please tell /me not to worry ;-) -FS. On Oct 16, 2012, at 8:30 PM, Evan Mezeske emeze...@gmail.com wrote: Hmm after reading that docstring, /me hopes he didn't just recommend something for its not-intended purpose :) On Tuesday, October 16, 2012 8:29:47 PM UTC-7, FrankS wrote: Thanks - that works - that was too easy ;-) I looked at the docstring before of aget because I remembered vaguely that that was how it used to work before .- : cljs.core/aget - Function ([array i] [array i idxs]) Returns the value at the index. Dismissed it for object-access after reading that… guess we can improve on the clarity of the docstring a little. -FS. On Oct 16, 2012, at 8:20 PM, Evan Mezeske emez...@gmail.com wrote: I think the easiest solution is to use aget and aset. There may be a better way, but if so I'm not aware of it. http://stackoverflow.com/questions/9861485/clojurescript-interop On Tuesday, October 16, 2012 6:21:45 PM UTC-7, FrankS wrote: I understand that you can call js-methods and get properties thru: (.a-method some-js-object param) and (.-a-prop some-js-object) respectively, but how do you invoke either when you have the method/property as a string? The following doesn't seem to work: (let [m a-method dot-m (symbol (str . m)] (dot-m some-js-object)) or (let [m a-prop dot--m (symbol (str .- m)] (dot--m some-js-object)) And I cannot find any simple function interface for this. I must be overlooking something - please… Thanks, FrankS. -- 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
Re: Clojure turns 5
Congrats! The output coming out of Rich and Clojure/core lately is coming at an unbelievable pace. Keep up the good work :) On Tue, Oct 16, 2012 at 11:15 PM, David Nolen dnolen.li...@gmail.com wrote: Congrats! On Tuesday, October 16, 2012, Rich Hickey wrote: I released Clojure 5 years ago today. It's been a terrific ride so far. Thanks to everyone who contributes to making Clojure, and its community, great. Rich -- 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 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 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
Remembering locations in a zipper
I have a zipper and here's the code I'm trying to execute: 1) search through all nodes until a match for a predicate is found 2) starting at that node go up to its parent then mark all children of the parent with extra info 3) the parent has the option to go to it's parent and perform step 2 as well 4) go back to the node marked in (1) and continue execution, but with the latest version of the zipper as defined by (2) and (3) Since zippers use immutable data I can't simply go back to the data in 1 as then I'll loose my changes. Is there currently some way to save the path to the current node and then later reset to root and replay the zipper commands to get back to that node? Thanks, Timothy -- “One of the main causes of the fall of the Roman Empire was that–lacking zero–they had no way to indicate successful termination of their C programs.” (Robert Firth) -- 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
Re: Rouge: Ruby + Clojure
On Wednesday, 17 October 2012 at 4:11 AM, Phil Hagelberg wrote: http://home.pipeline.com/~hbaker1/ObjectIdentity.html Thanks for the link, too—I'm working through it with interest. As for mutability in Rouge, I had another thought—freezing (or possibly duping then freezing) Ruby String objects when returned by the core evaluator would probably do the trick comprehensively; it would incur a performance penalty, but it would be at least starting on the right foot. -- 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
Re: ANN: Clojure 1.3 and 1.4 Cheat Sheet v7
Other than the PDF being colorful, no. :) It does make a beautiful setting on my wall next to my computer, though. -Nick -- 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
Re: Clojure turns 5
That's *a lot* of hard work. I am amazed of how much work goes into making such great software with the studying and the many years spent training yourself(generally speaking, not just Rich, but certainly I myself am not part of that list) before the project even started. Sometimes it just boggles my mind realizing how impossible it would've been for me to do that coupled with the amount of work and prerequisites that the body/mind required to have had to do it. Clojure is much appreciated! Thank you all for all the hard work making this possible. On Wed, Oct 17, 2012 at 3:54 AM, Rich Hickey richhic...@gmail.com wrote: I released Clojure 5 years ago today. It's been a terrific ride so far. Thanks to everyone who contributes to making Clojure, and its community, great. Rich -- 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 -- I may be wrong or incomplete. Please express any corrections / additions, they are encouraged and appreciated. At least one entity is bound to be transformed if you do ;) -- 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
Re: Inconsistent Exceptions
Compile compliance level: 1.6 Generated class files compatibility: 1.6 Source compatibility: 1.6 I think regardless of what jdk you use to run/compile them, these 3 (or at least the first 2) are affecting what you said. I got those from eclipse (but there should be command line equivalents of those: ie. in project.clj with leiningen *:javac-options [-target 1.6 -source 1.6 -Xlint:-options -g:source,lines -encoding utf8]* , I pasted the entire line, but only -target and -source are relevant) I think the usual errors when one project uses 1.7 (for the first 2) and the other uses like 1.6, is like: *java.lang.UnsupportedClassVersionError: Unsupported major.minor version*51.0 (where the number may differ) In eclipse, all 3 must be the same else it will not allow it, i see. Anyway, that's my 2 cents about it:) I may be wrong, corrections/additions are welcome. On Tue, Oct 16, 2012 at 1:27 AM, JvJ kfjwhee...@gmail.com wrote: I just found out that my clojure project is using jre7, while the other project is using jre6. That probably has something to do with it. In other words, you were right. In eclipse, by default, changing the jdk used changes all 3 of those automatically by default (unless you have Enable project specific settings for the Java Compiler section in project properties - but if you're using leiningen to uberjar this has no effect obviously, it's the above in project.clj you'd want) On Monday, 15 October 2012 19:17:26 UTC-4, JvJ wrote: I'm having a peculiar issue with Java interop. I'm running a program in 2 different ways: -Running the program directly -Calling the main function from Clojure Oddly, by calling main from Clojure, I get an exception that isn't there when I run normally: UnsupportedOperationException This parser does not support specification null version null javax.xml.parsers.**SAXParserFactory.setSchema (:-1) I was able to use the debugger using both running methods, and the parameters seem to be the same. I just don't get it. Does anyone have any ideas? -- 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 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
Re: Clojure turns 5
It was an incredible language, five years with clojure is an incredible journey, helping me understand programming better, and do programming better. Thanks Rich! On Wednesday, October 17, 2012 9:53:55 AM UTC+8, Rich Hickey wrote: I released Clojure 5 years ago today. It's been a terrific ride so far. Thanks to everyone who contributes to making Clojure, and its community, great. Rich -- 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
Re: ClojureScript: how to call a js method when you have the method-string?
It may be worth considering adding an oget to complement aget as was suggesting during ClojureScript/Lua development. David On Tue, Oct 16, 2012 at 11:30 PM, Evan Mezeske emeze...@gmail.com wrote: Hmm after reading that docstring, /me hopes he didn't just recommend something for its not-intended purpose :) On Tuesday, October 16, 2012 8:29:47 PM UTC-7, FrankS wrote: Thanks - that works - that was too easy ;-) I looked at the docstring before of aget because I remembered vaguely that that was how it used to work before .- : cljs.core/aget - Function ([array i] [array i idxs]) Returns the value at the index. Dismissed it for object-access after reading that… guess we can improve on the clarity of the docstring a little. -FS. On Oct 16, 2012, at 8:20 PM, Evan Mezeske emez...@gmail.com wrote: I think the easiest solution is to use aget and aset. There may be a better way, but if so I'm not aware of it. http://stackoverflow.com/**questions/9861485/**clojurescript-interophttp://stackoverflow.com/questions/9861485/clojurescript-interop On Tuesday, October 16, 2012 6:21:45 PM UTC-7, FrankS wrote: I understand that you can call js-methods and get properties thru: (.a-method some-js-object param) and (.-a-prop some-js-object) respectively, but how do you invoke either when you have the method/property as a string? The following doesn't seem to work: (let [m a-method dot-m (symbol (str . m)] (dot-m some-js-object)) or (let [m a-prop dot--m (symbol (str .- m)] (dot--m some-js-object)) And I cannot find any simple function interface for this. I must be overlooking something - please… Thanks, FrankS. -- 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 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
Re: Clojure turns 5
Clojure is the gift that keep giving. I, for one, really appreciate what you've done Rich, and can't wait to work with it more and take part in the community as it grows. Alex On Tue, Oct 16, 2012 at 9:39 PM, Robert Luo l...@basecity.com wrote: It was an incredible language, five years with clojure is an incredible journey, helping me understand programming better, and do programming better. Thanks Rich! On Wednesday, October 17, 2012 9:53:55 AM UTC+8, Rich Hickey wrote: I released Clojure 5 years ago today. It's been a terrific ride so far. Thanks to everyone who contributes to making Clojure, and its community, great. Rich -- 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 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
