http://blog.gmane.org/gmane.comp.java.clojure.user hourly 1 1901-01-01T00:00+00:00 http://gmane.org/img/gmane-25t.png http://gmane.org http://comments.gmane.org/gmane.comp.java.clojure.user/58824 <pre>Hi, I have a problem wherein I need to select subsets of a given map; think about select-keys, but with arbitrary nesting. For example, consider this map - (def my-map {:name "John Doe" :email "john&lt; at &gt;doe.com" :address {:house "42" :street "Moon St." :city "San Francisco" :state "CA" :zip 76509 :mobile "+188888888"} :ssn "123456" :spouse {:name "Jane Doe" :ssn "654321" :relation :wife :address {:house "42" :street "Moon St." :city "Atlanta" :state "GA" :zip 76509 :mobile "+188888888"}}}) From the above map, I want to extract this sub-map - {:spouse {:name "Jane Doe", :address {:state "GA", :city "Atlanta"}}, :name "John Doe", :email "john&lt; at &gt;doe.com", :address {:state "CA", :city "San Francisco"}} What would be a good way to express this sub-map so that I can pass it on to a function? I am thinking about something like this - [:name :email {:address [:city :state]} {:spouse [:name {:address [:city :state]}]}] Example implementations are also welcome. Regards, BG </pre> Baishampayan Ghose 2012-05-26T04:58:56 http://comments.gmane.org/gmane.comp.java.clojure.user/58818 <pre>I confess that the last time I cracked open a Prolog book was lo these many years ago in college and that I need to re-read The Art but I'm hoping that someone can point out how I'm thinking about this problem wrongly: I'd like to write a goal that succeeds when given a set of required items and a set of supplied items, the supplied items is a proper superset of the required items. My intuition is that I want a goal that succeeds and 'returns' the common subset of the two sets and then another goal that tries to unify the subset with the required items: I'm basically treating the subset operation as a subrouting and using run* to aggregate the common elements. This feels wrong and it feels like I should use something less procedural but I can't wrap my brain around how else to approach the problem. Suggestions? Hints? Thanks </pre> Mark 2012-05-25T23:58:14 http://comments.gmane.org/gmane.comp.java.clojure.user/58812 <pre>I've recently been on board a project that will targeting Android, and I've been given pretty much free reign chose my tools. I'm an experienced Common Lisper and a fairly new Clojure user, but I'd like to know about the feasibility of writing real-world Android applications in Clojure. </pre> HelmutKian 2012-05-25T21:45:03 http://comments.gmane.org/gmane.comp.java.clojure.user/58803 <pre>Hi, guys. Has anyone had any luck with using google-code-prettify&lt;http://code.google.com/p/google-code-prettify/&gt;and http://google-code-prettify.googlecode.com/svn/trunk/src/lang-clj.jstogether on blogger? I followed http://www.tkglaser.net/2012/03/syntax-highlighting-in-blogger.html&lt;http://www.tkglaser.net/2012/03/syntax-highlighting-in-blogger.html%20&gt;, but I can't get Clojure to display correctly, at least yet. </pre> Jake Johnson 2012-05-25T10:07:24 http://comments.gmane.org/gmane.comp.java.clojure.user/58799 <pre>I've noticed that the size of my compiled .js file is well over 100k even with advanced optimizations turned on. I noticed I was using an older revision of the clojurescript compiler so I just updated to the latest master commit thinking that maybe that would help. Now my generated javascript file is 22k larger. Why would the newer version be producing larger files and is there any plan on the roadmap to try to reduce these file sizes? I would think that since I didn't change any of my code, with the proper optimization this new 22k overhead should have been eliminated. Is there a general understanding as to why the generated output is so large? I really enjoy using clojurescript and hope that at some point there will be a way to have it generate smaller files. </pre> Aaron 2012-05-25T18:16:16 http://comments.gmane.org/gmane.comp.java.clojure.user/58797 <pre>I expected this to match, but it did not. (clojure.core.match/match [{}] [{:x (x :when nil?)}] ["match" x]) ;;=&gt; nil Instead, I was able to make this work: (clojure.core.match/match [{}] [{:x (x :when #(= :clojure.core.match/not-found %))}] ["match" x]) ;;=&gt; ["match" nil] I am curious: is this by design? Thanks. -David McNeil </pre> David McNeil 2012-05-25T18:02:27 http://comments.gmane.org/gmane.comp.java.clojure.user/58785 <pre>Hello , I am trying to make a clojure wrapper for the adwords java api but I am having trouble with some of the code. Creating simple objects is fairly straightforward but when it comes to interfaces quite frankly Clojure is not very intuitive. I could not find very good examples for how to create them. I am also confused as when to use proxy or reify. So the java code looks like this: AdGroupServiceInterface adGroupService = user.getService(AdWordsService.V201109.ADGROUP_SERVICE); AdwordsService has constants which I try to code like this: (def ad-service (AdwordsService/V201109/ADGROUP_SERVICE)) ;;this fails with no such namespace Do I use proxy here or reify and how do set the service on the adGroupService ? Any pointers in the right direction is welcome. /BR Jason </pre> Jason S 2012-05-24T14:21:06 http://comments.gmane.org/gmane.comp.java.clojure.user/58784 <pre>Hello Guys, I am quite new to clojure, and I am a fan. It's a great thing. One thing that seems missing, however, is a single unified way of setting up the clojure environment. Which seemed pretty daunting to me at first. So I have decided to create a Linux Distro specifically for Clojure development. I have been bouncing this idea in #clojure and it got a good response. So now I have started the complete development effort. My plan so far is as follows. Mission Statement for the Distro The distro should be able to: - Connect to internet. - Be able to convert itself into An VM/Iso/LiveCD etc - Have all IDEs for Clojure installed and preconfigured. - Eclipse - Vim - Emacs - Netbeans - Have a ready to play connection to clojure forums and channels - Have at-least one book on clojure programming on board - Have following clojure specific features - It should have leiningen installed and configured - It should have a local repo of all current clojure plugins - It should have a local "cloud" on which you can deploy web apps easily - it should have REPLlabs on baord and configured - Have Clojure specific branding The packages that are needed absolutely: - OpenJDK 1.7.0 - Leiningen - Clojure - Eclipse - Vim - Emacs 24 - Netbeans - Emacs Starter kit - CCW plugin for eclipse - Firefox/Chrome - A local webserver - Postgresql - LXDE/XFCE - Gwibber/Other Social network Client - xchat - irssi - git - Regular packages for system functioning. I am still open to ideas. I intend to roll it as a complete distro, so I will love any and all input. For now, the specific things I need input for are: - Who/How to create the art for branding. - Any packages that are missing from the above listing. - Any suggestions for the overall functioning. I will soon have an actual website set up. It is my intention to create a fully functional, independent Development environment for Functional programmers by release 2. Right now, I am working on release 0.0.1. Looking forward to all input. regards. banseljaj </pre> banseljaj 2012-05-24T20:11:21 http://comments.gmane.org/gmane.comp.java.clojure.user/58768 <pre>Hi, Just curious... Is it common for people deploying Clojure servers in a production environment to leave a swank or nrepl server running for making live bug fixes? Do you guys do this? Would you advise against it? Thanks, </pre> blais 2012-05-24T16:07:21 http://comments.gmane.org/gmane.comp.java.clojure.user/58765 <pre>Hello I've got a problem I'm stuck with and would value some extra input... Basically I'd like to be able to define a maths function with a large number of variables, then pass this and a map of arguments to a solve function which solves for whatever is not defined in the map. Now the solve function works well, using Apache Commons Math, but it expects a function of one argument. However the only way I can think of converting the argument list and the function into a function of one argument is with an intermediate function. However approach is pretty messy as I need to define two functions for each maths function and list out the arguments twice. Ideally I could pass the body of the maths function and a map of arguments directly to the solve function without having to define a function explicitly, and it would also work for multiple variables, but I might be asking a lot. Here is what I have:- (defn -cat "example math function" [{:keys [E A alpha t2 t1 W1 W2 g L T1 T2]}] (- (+ (* E A alpha (- t2 t1)) (/ (* (sq W1) (sq g) (sq L) E A) (* 24.0 (sq T1))) T2) T1 (/ (* (sq W2) (sq g) (sq L) E A) (* 24.0 (sq T2))))) (defn cat [m] (let [v (difference #{:E :A :alpha :t2 :t1 :W1 :W2 :g :L :T1 :T2} (keys m))] (if-not (= (count v) 1) (exception "incorrect number of variables")) (fn [x] (-cat (assoc m (first v) x))))) (solve (cat {:E 65000 :A 209.3 :alpha 0.000023 :t1 15 :t2 5 :W1 0.576 :W2 0.576 :g 9.81 :L 45 :T1 1595}) :start 1 :min 0 :max 100000 :max-eval 1000) and the solver code is on github: https://github.com/taprisiot/jlk.math/blob/master/src/jlk/math/optimization.clj Now there has to be a better way of doing this but I'm stumped. Any ideas? As a side note, being able to define functions in infix would also be nice, but I don't feel up to creating a maths parser and dealing with ASTs, although I can visualise how I might manage the variables using this approach. Thanks for any help! - Lachlan </pre> jlk 2012-05-24T12:42:10 http://comments.gmane.org/gmane.comp.java.clojure.user/58764 <pre>Hi, The http://clojure.org/libraries page does not seem to be very up to date. Would be be a good idea to put references to external links there that maintain lists of Clojure libraries? [1] http://www.clojure-toolbox.com/ [2] http://clojure-libraries.appspot.com/ [3] http://clojurewerkz.org [4] http://clojuresphere.herokuapp.com Shantanu </pre> Shantanu Kumar 2012-05-24T12:40:16 http://comments.gmane.org/gmane.comp.java.clojure.user/58757 <pre>Three weeks ago I stumbled across the Anti-If Campaign ( http://www.antiifcampaign.com/). An instant later I realized that one could easily re-implement "if" in Clojure with maps. More interestingly, polymorphic functions can be easily motivated with the help of maps. And this naturally leads to multimethods. If you like, enjoy reading my blogpost on "The root of polymorphism: The Anti-If Campaign". It might be an interesting read for Clojure enthusiasts. http://denkspuren.blogspot.de/2012/05/root-of-polymorphism-anti-if-campaign.html Cheers, Dominikus </pre> Dominikus 2012-05-24T09:57:47 http://comments.gmane.org/gmane.comp.java.clojure.user/58748 <pre>For some reason, this doesn't actually seem to be executing in parallel: (defmacro pdoseq "Bindings as for for, but parallel execution as per pmap, pcalls, pvalues; returns nil." [seq-exprs &amp; body] `(do (doall (pmap identity (for ~seq-exprs (do ~&lt; at &gt;body))) nil))) user=&gt; (pdoseq [i (range 10)] (println n)) 0 1 2 3 4 5 6 7 8 9 Never any interleaving of output and if I give it a big CPU-bound job to do for each integer it only saturates one core. I thought it might be a chunked-seq issue, but: user=&gt; (chunked-seq? (range 10)) false </pre> Cedric Greevey 2012-05-24T05:56:26 http://comments.gmane.org/gmane.comp.java.clojure.user/58743 <pre>(defn f [^java.awt.image.BufferedImage bi x] (.setSample (.getRaster bi) 0 0 0 (double x))) #&lt;CompilerException java.lang.IllegalArgumentException: More than one matching method found: setSample, compiling:(NO_SOURCE_PATH:1)&gt; The only way I was able to find to fix this is (defn f [^java.awt.image.BufferedImage bi] (.setSample (.getRaster bi) 0 0 0 ^Double (double x))) which presumably forces x to be boxed and unboxed again. </pre> Cedric Greevey 2012-05-23T23:58:27 http://comments.gmane.org/gmane.comp.java.clojure.user/58742 <pre>Since the only other alternatives (http://code.google.com/p/clojure-jsr223/ and https://github.com/pmf/clojure-jsr223) seem pretty much dead, I decided to write my own (in Clojure). You can get the jar downloading it from Clojars with lein dep and then just drop it in the desired class-path to have Clojure support. Here's the link: http://clojars.org/clj-jsr223 </pre> eduardoejp 2012-05-23T23:56:14 http://comments.gmane.org/gmane.comp.java.clojure.user/58741 <pre>Midje is a test framework for Clojure. It supports top-down as well as bottom-up testing, encourages readable tests, provides a smooth migration path from clojure.test, and supports a balance between abstraction and concreteness. Special thanks to Alex Baranosky for all his work on this version. Changes: https://github.com/marick/Midje/wiki/New-in-1.4 User documentation: https://github.com/marick/Midje/wiki Repo: https://github.com/marick/Midje ----- Brian Marick, Artisanal Labrador Contract programming in Ruby and Clojure Occasional consulting on Agile www.exampler.com, www.twitter.com/marick </pre> Brian Marick 2012-05-23T22:29:08 http://comments.gmane.org/gmane.comp.java.clojure.user/58739 <pre>Before I dive in to the literature, I was wondering if anyone had experiences worth sharing trying to call jython code from clojure? </pre> Brent Millare 2012-05-23T17:22:48 http://comments.gmane.org/gmane.comp.java.clojure.user/58736 <pre>Not directly clojure related - but input needed I have master I have mybranch I have a bunch of commits on mybranch. I can create an attributed patch with "git format-patch master". This includes all commits on the branch, including merges and updates from master. I can create an unattributed but more concise diff with "git diff master". I don't think that all of the commits on mybranch are particularly relevant - more steps on the way to the solution - only the final diff really matters. Questions: - is it preferred to have all commits from a branch? - even if it makes the patch harder to follow? - if a diff is preferred - how do you create one that is attributed? Thanks in advance Dave </pre> Dave Sann 2012-05-23T09:57:37 http://comments.gmane.org/gmane.comp.java.clojure.user/58732 <pre>Hi all! Quick announcement: I've been working on bringing together the best features from the current crop of Clojure Redis clients, and filling in some of the remaining holes. It's on GitHub (https://github.com/ptaoussanis/carmine) and Clojars ( http://clojars.org/carmine). Since I'm NOT using it in production anywhere yet, I'd caution anyone to treat it as "still experimental" for now. The goal, however, is to head toward something very much production-ready by the time 1.0 rolls around. Features (taken from the readme): * A high-performance, all-Clojure client. * Modern targets: Redis 2.0+ (with full 2.6 support), Clojure 1.3+, Leiningen 2. * Connection pooling. * Complete and accurate command definitions with full documentation. * Composable, first-class command functions. * Flexible, high-performance binary-safe serialization. * Full support for Lua scripting, Pub/Sub, etc. * Command helpers (sort*, etc.). Any comments/pull-requests/whatever very welcome! - Peter Taoussanis (&lt; at &gt;ptaoussanis) </pre> Peter Taoussanis 2012-05-23T09:11:46 http://comments.gmane.org/gmane.comp.java.clojure.user/58730 <pre>Hi everybody, I have release a library to query the echonest[1][2] API. This is my very first job so I'm looking for feedback, especially about how to manage some basic configuration[3] and how introduce asynchronously agent[4]... I am very happy to have finished this job... Please contact me for every question or just to say that i did everything wrong... Simone Mosciatti [1] http://the.echonest.com/ [2] http://developer.echonest.com/ [3] Lines 16 and 18 https://github.com/siscia/echonest-clojure-api/blob/master/src/echonest_api/with-doc-core.clj#L16 [4] Line 7 https://github.com/siscia/echonest-clojure-api/blob/master/src/echonest_api/with-doc-core.clj#L7 </pre> Simone Mosciatti 2012-05-22T21:10:58 http://comments.gmane.org/gmane.comp.java.clojure.user/58729 <pre>Welle RC1 was announced here about a week ago [1], so this will be a short one. No issues have been found since 1.0.0-RC1 and documentation guides at http://clojureriak.info are now complete, so it's time to release Welle 1.0.0 final. Change log: https://github.com/michaelklishin/welle/blob/master/ChangeLog.md Documentation: http://clojureriak.info Updates on Twitter &lt; at &gt;ClojureWerkz. That's about it. 1. https://groups.google.com/forum/#!topic/clojure/zUFKYZlYjfw MK </pre> Michael Klishin 2012-05-22T19:56:09 Search the mailing list at Gmane query http://search.gmane.org/?group=$group=gmane.comp.java.clojure.user