2009-10-18
| 00:01 | durka42 | the side-effects part? |
| 00:04 | jlilly | partial is effectively a curry, right? |
| 00:04 | hiredman | yeah |
| 00:04 | hiredman | durka42: yeah |
| 00:05 | hiredman | (defn iter [fn init] (lazy-seq (cons init (let [v (fn init)] (cons v (iter fn v)))))) |
| 00:05 | hiredman | more like what I was hoping for |
| 00:06 | hiredman | but it is less lazy then iterate, but I imagine that could be fixed |
| 00:07 | hiredman | hmm |
| 00:45 | jlilly | I need to do a multi-line thing in a function. Is there something similar to elisp's progn? |
| 00:45 | jlilly | the multi-line thing is: print line, read line. |
| 00:46 | fanatico | M-x slime works, but swank-clojure-project fails to connect a slime instance, then nerfs my swank-clojure-classpath variable. What have I done to offend it? |
| 00:46 | tomoj | fanatico: do you have clojure.jar in lib/? |
| 00:47 | fanatico | Isn't that available via swank-clojure-jar-path? |
| 00:47 | tomoj | no |
| 00:47 | tomoj | swank-clojure-project wants you to put _everything_ in the project dir |
| 00:48 | hiredman | jlilly: do? |
| 00:48 | tomoj | afaik. you could hack it to look for clojure elsewhere |
| 00:48 | jlilly | ,(doc do) |
| 00:48 | clojurebot | Pardon? |
| 00:48 | tomoj | jlilly: functions are implicit progns |
| 00:48 | jlilly | that's a functioN? |
| 00:48 | fanatico | tomoj: thanks. |
| 00:48 | tomoj | (defn foo [] (bar) (baz)) |
| 00:48 | jlilly | defn? |
| 00:48 | jlilly | hmm. I'll try that. |
| 00:49 | tomoj | if you didn't know defn... what the heck where you doing before? :) |
| 00:49 | hiredman | fns have an implicit do |
| 00:49 | hiredman | ,(do 'this 'that) |
| 00:49 | clojurebot | that |
| 00:49 | jlilly | I forgot to do the [] :) |
| 00:50 | hiredman | ,(do (pr :a) (pr :b)) |
| 00:50 | clojurebot | :a:b |
| 00:50 | tomoj | fanatico: I guess maybe it's so we can use different clojure versions in different projects easily? dunno |
| 00:53 | fanatico | tomoj: that makes sense. Still seems wrong to not restore the classpath vars. |
| 00:53 | tomoj | yeah |
| 00:54 | tomoj | I guess if you have special vars you should write a wrapper around the slime clojure startup that sets them |
| 01:04 | technomancy | fanatico: swank-clojure-project expects projects to be entirely self-contained |
| 01:04 | technomancy | I suppose it'd be convenient if it didn't have to affect the default settings though |
| 01:06 | technomancy | if you feel strongly about it, feel free to open an issue on the github project or discuss it on the mailing list |
| 01:08 | fanatico | technomancy: Looking at the code now. I always forget how easy this is with emacs. I'll write a quick patch and post an issue later tonight. |
| 01:09 | technomancy | great |
| 01:18 | jlilly | so, in the slime repl, I run (read-line). how can I exit it? |
| 01:19 | jlilly | I've been killing the repl, but I can't actually test anything with (read-line) in it. |
| 01:25 | tomoj | jlilly: one possibility is to switch over to *inferior-lisp* to test those functions |
| 01:26 | bryteise | do you need to restart the *inferior-lisp* then? |
| 01:27 | tomoj | I don't think so? not sure what you mean |
| 01:28 | technomancy | that's a known bug; the IO streams aren't hooked up properly |
| 01:28 | tomoj | is slime supposed to be able to handle this? (testing with sbcl now) |
| 01:28 | bryteise | hrm im probably confused and thinking of something else |
| 01:28 | technomancy | well; *in* isn't at least... waiting for someone who actually uses *in* to fix it. =) |
| 01:29 | tomoj | fyi: yes, it works fine with sbcl |
| 01:39 | bryteise | is there a nice solution for working with maven packages with slime? i hadnt seen much since dysinger's method which was using an old repo of clojure i wasnt sure how to update (and wanted to use the emacs-starter-kit version anyway) |
| 01:40 | technomancy | bryteise: swank-clojure-project will pick up deps in target/dependency automatically |
| 01:41 | bryteise | ah okay, awesome. |
| 01:42 | technomancy | stuart's working on getting swank packaged as a maven artifact so you can add it as a dep and then connect remotely to your app to debug in production etc, but that's still a work in progress. |
| 01:43 | technomancy | personally I like making my projects descend from clojure-pom; seems like the cleanest way to handle dependencies so far |
| 01:43 | technomancy | but since there's not post-1.0 build of clojure in the centralized repos, it's messy all around |
| 01:44 | technomancy | I'm thinking soon we'll have a clojure-community-run repo so we don't have to rely on the slow submission process of the central maven one; should help a lot. |
| 02:35 | vy | Why does (serial-enqueue "foo" "bar" "baz") complains that "Wrong number of args passed to: user$serial-enqueue--2294$fn" for (defn serial-enqueue [& args] (swap! serial-stream #(do args))) function? |
| 02:35 | jlilly | how do I "run" a clojure file? |
| 02:35 | vy | jlilly: java -cp clojure.jar clojure.main /path/to/myscript.clj |
| 02:36 | vy | jlilly: See http://clojure.org/repl_and_main |
| 02:39 | jlilly | thx |
| 03:01 | jlilly | http://dpaste.de/bWQs/ having some issues with my classpath. Anyone able to take a look? |
| 03:04 | arbscht | clojurebot: classpath |
| 03:04 | clojurebot | classpath is (System/getProperty "java.class.path") |
| 03:05 | arbscht | http://java.sun.com/javase/6/docs/technotes/tools/findingclasses.html |
| 03:06 | hiredman | jlilly: -cp and -jar are mutually exclusive |
| 03:07 | jlilly | I see. |
| 03:59 | jamesswift | hey folks. would like some advice on the proper clojure way to do the following http://paste.lisp.org/+1WJ9 |
| 03:59 | jamesswift | i.e. find the neighbours of a location in an array |
| 04:11 | hiredman | well thats good to know... |
| 04:11 | jamesswift | *cough* er yeah |
| 04:12 | hiredman | I'd user for to remove all that duplicate code |
| 04:15 | jamesswift | well i thought so but was just curious how different it would be and wanted the example code to be clear in what i wanted to do. also it doesn't take into account the edges etc |
| 04:33 | jamesswift | i've annotated a 'for' version but i'm still sure there is much nicer way to express this http://paste.lisp.org/display/88821#1 |
| 04:41 | hiredman | I am pretty sure you can collapse both those for's and get rid of the ifs |
| 04:44 | hiredman | although, I guess that would end up making a flat list |
| 04:52 | jamesswift | yeah i would like to keep the structure, so far i have this http://clojure.pastebin.com/m768e9c50 (the lisp paste is down atm) |
| 06:09 | spuz | I'm trying to use the clojure contrib profile api (http://richhickey.github.com/clojure-contrib/profile-api.html) so I downloaded the latest clojure contrib from git hub, compiled it, but my program cannot appear to find the profile library |
| 06:09 | spuz | I do (:require clojure.contrib.profile) but I get java.lang.ClassNotFoundException: clojure.contrib.profile |
| 06:09 | spuz | when I look in the clojure-contrib.jar, I see many .clj files but not many corresponding .class files. Is that normal? |
| 06:11 | serp_ | spuz: did you perform any further work on the mandelbrot visualizer? |
| 06:12 | spuz | serp_: I'm trying to optimise it at the moment :) |
| 06:12 | serp_ | you should probably consider adding multiple samples per pixel |
| 06:12 | serp_ | it'll make it look a lot better |
| 06:12 | spuz | visual vm is not playing very nice though so I'm trying to use the contrib profile library... |
| 06:13 | spuz | serp_: that's not a bad idea. I might do that for my java version. I think performance needs to improve for the clojure version first |
| 06:22 | Chousuke | spuz: you cloned it with git or downloaded some other way? |
| 06:22 | spuz | Chousuke: cloned it |
| 06:25 | Chousuke | hmmh |
| 06:26 | Chousuke | maybe the profile namespace requires AOT-compilation (which with contrib is only done if you supply the path to clojure.jar) |
| 06:29 | spuz | Chousuke: I did ant -Dclojure.jar=../clojure/clojure.jar |
| 06:32 | spuz | Chousuke: what I'm wondering, is should all the .clj files be compiled into .class files as part of that build? |
| 06:33 | Chousuke | most, anyway |
| 06:33 | Chousuke | but it shouldn't really matter whether they're compiled or not |
| 06:33 | Chousuke | except for the few namespaces that use gen-class |
| 06:38 | spuz | hmm ok |
| 07:07 | spuz | Chousuke: Would you expect this to work? |
| 07:07 | spuz | java -cp "clojure/clojure.jar;clojure-contrib/clojure-contrib.jar" clojure.contrib.repl_ln |
| 07:07 | Chousuke | hmmh |
| 07:08 | spuz | This is how the CCW plugin starts the repl, when I run it with my newly build clojure and clojure-contrib jars it gives: Exception in thread "main" java.lang.NoClassDefFoundError: clojure/contrib/repl_ln |
| 07:08 | Chousuke | I'm not sure if the -cp switch supports relative paths |
| 07:08 | spuz | but when I swap them out for the jars included with the CCW plugin, it works fine |
| 07:08 | spuz | Chousuke: yes, it does |
| 07:08 | Chousuke | ah, and the clojure-contrib jar needs to be AOT-compiled |
| 07:09 | Chousuke | so if you don't have the class files in the jar it won't work. |
| 07:09 | spuz | ah ok |
| 07:09 | spuz | I guess there's a special way of doing that... :) |
| 07:09 | Chousuke | well ant -Dclojure.jar=/path/to/clojure.jar should work |
| 07:10 | Chousuke | maybe a relative path doesn't owrk |
| 07:10 | Chousuke | work |
| 07:10 | spuz | Chousuke: I'll try the full path |
| 07:13 | spuz | Chousuke: full or relative path has the same effect |
| 07:14 | spuz | if I specify the path incorrectly then it complains |
| 07:14 | spuz | so it must be finding clojure.jar |
| 07:14 | spuz | it seems that AOT compilation is only done for a small set of clj libraries |
| 08:19 | ambient | *SLIME compilation* telling me on which line the error happened would be a huge help |
| 08:19 | ambient | "argument type mismatch" |
| 08:21 | ambient | it's always "foosouce.clj:0" |
| 08:22 | LauJensen | ambient, for what its worth, that usually means it's something in your main ns declaration, or one of the dependencies it's pulling in |
| 08:22 | ambient | i got just this one source file so yes, that might be the case :p |
| 08:23 | ambient | but debuggers are a crutch anyway, eh? ;) |
| 08:26 | LauJensen | Well... :) Clojure backtraces have been the source of many tears |
| 08:27 | licoresse | I loathe them backtraces |
| 08:27 | ambient | i've got my analog modelling synth basics now in place: http://paste.pocoo.org/show/145620/ |
| 08:27 | ambient | but it's a bit slower than i want it to be :/ |
| 08:27 | LauJensen | What can I do with it ? |
| 08:27 | ambient | my paste? at the moment just run it |
| 08:28 | ambient | later i wlil add sliders and midi input to modify state |
| 08:41 | mccraig | i load a file with (load "foo") and call a function defined therein... i get an Exception, which says NO_SOURCE_FILE and gives me no line number information... any ideas what i'm doing wrong ? |
| 08:42 | somnium | mccraig: what's the exception? |
| 08:43 | mccraig | NPE |
| 08:44 | somnium | mccraig: afaik NO_SOURCE_FILE means its calling something defined in the repl |
| 08:45 | mccraig | right, but i'm putting the def in a file and either (load "foo") or (require 'foo) it |
| 08:45 | mccraig | both ways i'm not getting line number info |
| 08:45 | somnium | mccraig: if you compile a file with a namespace it can give you more info |
| 08:45 | somnium | are you using slime? |
| 08:47 | mccraig | there is a namespace in the file. it's not helping |
| 08:47 | mccraig | i'm not using slime |
| 08:47 | mccraig | using a raw repl |
| 08:47 | somnium | mccraig: maybe it will be easier to help if you paste the file and part of the exception |
| 08:50 | mccraig | http://gist.github.com/212667 |
| 08:51 | mccraig | is a simplest case reduction |
| 08:51 | mccraig | (use 'foo) (oops) |
| 08:51 | mccraig | gives me a RuntimeException with NO_SOURCE_FILE |
| 08:54 | mccraig | java.lang.RuntimeException: boo (NO_SOURCE_FILE:0) |
| 08:54 | somnium | thats what it should do |
| 08:54 | somnium | it throws the exception, prints your message, and there's no source because its all defined in the repl |
| 08:58 | mccraig | no, the namespace is in file "foo.clj", which i load with (use 'foo)... it's not defined in the repl |
| 09:00 | lisppaste8 | spuz pasted "Type hinted function" at http://paste.lisp.org/display/88831 |
| 09:01 | spuz | Hey, I'm having a problem type hinting the above function, even with the #^WritableRaster hint, I still get a reflection warning for the setPixel method. |
| 09:03 | spuz | any idea how I can find out why the type hint is not doing anything? |
| 09:03 | Chousuke | spuz: maybe there is an overload of the setpixel and it can't figure out the correct one? |
| 09:04 | Chousuke | +method :P |
| 09:05 | spuz | Apparently, this is the actual implementing class: http://www.docjar.com/docs/api/sun/awt/image/IntegerInterleavedRaster.html |
| 09:05 | spuz | However, setPixel only appears to be defined as part of the WritableRaster interface |
| 09:06 | spuz | or class even... |
| 09:06 | Chousuke | the typehint should be okay for the wr |
| 09:06 | Chousuke | variable |
| 09:07 | Chousuke | but I think you need to typehint the parameters |
| 09:07 | Chousuke | try (int x) (int y) #^ints (int-array ..) |
| 09:12 | somnium | mccraig: when you type (foo) at the repl there is no source file for that (foo) you just typed |
| 09:12 | somnium | mccraig: try putting (foo) under the definition of foo and executing it, you'll get a line number |
| 09:16 | spuz | Chousuke: that seems to help, the setPixel reflection warning has gone now too :) |
| 09:16 | spuz | improves the speed by a few seconds |
| 10:00 | cypher23 | Is there another way to "flatten" a list than (apply concat '((1 2 3) (4 5 6)))? |
| 10:13 | rottcodd | cypher23: there is also clojure.contrib.seq-utils/flatten |
| 10:14 | cypher23 | rottcodd, exactly what I was looking for, thanks |
| 10:18 | ambient | http://paste.pocoo.org/show/145638/ anyone got some performance tips for me? using a lot of atoms and maps |
| 10:18 | ambient | should i just do every data structure with a vector instead? |
| 10:18 | ambient | i mean array |
| 10:22 | ambient | are there any programs/examples done with clojure where there is a lot of dealing with mutable state with high-performance? |
| 10:26 | spuz | ambient: have a look at LauJensen's Transient Brain: http://blog.bestinclass.dk/index.php/2009/10/brians-transient-brain/ |
| 10:26 | ambient | it's not exactly very high performance, afaict :p |
| 10:27 | ambient | oh yes, transients, i have to look at those |
| 11:18 | LauJensen | New blog post - Python vs Clojure: Reloaded - http://blog.bestinclass.dk/index.php/2009/10/python-vs-clojure-reloaded/ |
| 11:18 | LauJensen | I took the advice of a few Python users and worked on Rosetta a bit :) |
| 11:19 | somnium | LauJensen: where'd you get the cool cobra? |
| 11:19 | LauJensen | It's still there |
| 11:20 | somnium | er, I guess its a hooded-python? |
| 11:20 | LauJensen | ambient, since you're on about performance, you can learn how I take a Python program that runs almost 2 hours and implement a 12 minute solution in Clojure :) |
| 11:21 | LauJensen | I'm off again, good evening |
| 11:21 | ambient | well i could probably do it with numpy a lot faster, but I don't want to insult anyone's sense of aesthetics |
| 11:21 | ambient | evening |
| 11:21 | licoresse | I don't get this line-counting-thing |
| 11:28 | rhickey | us vs them doesn't help us at all |
| 11:30 | Chousuke | LauJensen: I think the function used in reduce would be more readable if you didn't use #() so much |
| 11:31 | LauJensen | rhickey, I liked the one you did in that programming magazine though, where you slapped Scala, Erlang and a third I don't remember :) |
| 11:31 | LauJensen | I couldn't help feeling a little inferior for taking 1 language at a time |
| 11:31 | LauJensen | Chousuke, isn't that usually the case ? :) |
| 11:31 | Chousuke | LauJensen: also the icky sort call is equivalent to (sort-by :salary < data) if I'm not mistaken |
| 11:31 | rhickey | LauJensen: where? |
| 11:32 | LauJensen | rhickey, you were interviewed by some journal, their first edition I believe. I had a PDF somewhere... |
| 11:33 | LauJensen | Chousuke, really? That would be fantastic |
| 11:33 | rhickey | an us vs them blog a) never convinces 'them', and b) just makes 'us' seem insecure. Better to just write about using Clojure effectively and let other people draw their own contrasts |
| 11:34 | LauJensen | rhickey, I really thought about it and I ended up concluding, that I wish I had be helped more along in my early years, so I didn't end up wasting so much time in mainstream C/C# etc. |
| 11:35 | licoresse | LauJensen: But I need to find out this by myself |
| 11:35 | rhickey | LauJensen: you are of course free to write whatever you wish, but it doesn't help Clojure IMO to do us vs them |
| 11:36 | ambient | personally, i find well done comparisons between languages interesting, but understand that they can generate epic flame wars |
| 11:36 | LauJensen | rhickey, alright - your oppinion counts, I'll take it into consideration |
| 11:36 | sproingie | not sure why the python code in "Top-rank per group" isn't using dicts |
| 11:37 | sproingie | also the lambda for the key arg for sorted belies a lack of knowledge of operator.itemgetter |
| 11:37 | rhickey | unless one is an expert in both, you will inevitably shortchange 'them' |
| 11:37 | somnium | LauJensen: are there limits on what libraries you can use to produce the shortest code? |
| 11:37 | rhickey | and that will just make 'them' angry and unreceptive |
| 11:38 | LauJensen | rhickey, in a sense that's true but that's why I try to come back to 'immutability' and 'concurrency', and then the implementation details aren't important, the language level support is |
| 11:38 | LauJensen | somnium, I don't know - Didn't read the fine print :) |
| 11:39 | sproingie | the python code using minidom is also an odd choice, python typically prefers etree instead |
| 11:40 | somnium | ruby + nokogiri shouldn't be 35 lines, not sure if limited to std library |
| 11:40 | somnium | but it was interesting, I learned something about python and clojure |
| 11:40 | sproingie | tho it's unlikely etree would have made it any shorter |
| 11:43 | LauJensen | somnium, yea I think Python also came across pretty well |
| 11:43 | sproingie | somnium: the libraries that ship with the standard language distribution i imagine |
| 11:44 | Chousuke | LauJensen: http://gist.github.com/212716 |
| 11:44 | sproingie | except perhaps for languages where not using a library would be unthinkable, e.g. doing proper xml in C++ |
| 11:45 | somnium | sproingie: that gives me a shiver |
| 11:45 | LauJensen | Chousuke, aah that's cool |
| 11:45 | LauJensen | You should drop a link in a comment |
| 11:46 | Chousuke | actually |
| 11:46 | sproingie | C++ for example uses boost for some of its stuff, the solution just mentions that it's using boost |
| 11:47 | LauJensen | Did you guys all know about Rosetta before this post? I never heard of it.. |
| 11:47 | Chousuke | (doc group-by) |
| 11:47 | clojurebot | "clojure.contrib.seq-utils/group-by;[[f coll]]; Returns a sorted map of the elements of coll keyed by the result of f on each element. The value at each key will be a vector of the corresponding elements, in the order they appeared in coll." |
| 11:47 | Chousuke | too bad that's not in core :P |
| 11:47 | Chousuke | your entire departments thing would become (group-by :department (sort-by :salary data)) |
| 11:48 | sproingie | haskell's got a groupBy in prelude but it relies on the data being sorted first |
| 12:17 | mccraig | ah, got it. (.printStackTrace *e) gives me all the line numbers i want |
| 13:36 | ambient | don't know why but classpaths stopped working after updating clojure-mode :/ |
| 13:36 | ambient | the trick of "(setq swank-clojure-extra-classpaths (list "foobar"))" doesn't work anymore |
| 13:38 | Chousuke | it's not extra-classpaths anymore |
| 13:38 | Chousuke | it's just swank-clojure-classpath |
| 13:38 | ambient | thanks :) |
| 13:38 | Chousuke | and the swank-clojure-jar variable went away too |
| 13:38 | ambient | you probably just saved me hours |
| 13:52 | ambient | seems there's no real practical difference between using arrays and atoms |
| 13:53 | ambient | at least according to my benchmarks. except arrays are more difficult to manage |
| 13:53 | LauJensen | ambient, did you see cgrands last post on arrays ? (multi-dim) |
| 13:53 | ambient | nope |
| 13:53 | LauJensen | http://clj-me.cgrand.net |
| 13:53 | LauJensen | He's writte a couple of times on how to get big performance wins |
| 13:54 | maacl | LauJensen: har du en ide om hvorfor (use 'clojure.test) lige pludselig fejler? |
| 13:54 | ambient | cool. ty |
| 13:54 | LauJensen | maacl, desværre, har aldrig brugt det |
| 13:54 | maacl | LauJensen: ok |
| 13:54 | maacl | LauJensen: Du går måske ikke ind for tests :-) |
| 13:55 | ambient | LauJensen i was storing actual variables in an array. i have (def foo (atom {:var1 0.0 :var2 0.5})) etc.. instead i used arrays and direct indexing. made no difference |
| 13:55 | LauJensen | maacl, it's best to stick with english in an english speaking chan :) And yes, I do approve of tests, under the right circumstances |
| 13:55 | ambient | one would think that concurrent constructs would introduce significant overhead |
| 13:55 | maacl | LauJensen: ok |
| 13:56 | djpowell | I just posted my live-repl thing on github btw if anyone's interested <http://github.com/djpowell/liverepl>. Lets you hack a clojure repl into any running java or clojure process. |
| 13:56 | hiredman | :( this paper on jvm tail calls lists Clojure under common lisp implementations |
| 13:57 | LauJensen | djpowell, nice, will check it out |
| 13:58 | ambient | here's the code for both: http://paste.pocoo.org/show/145687/ |
| 14:00 | LauJensen | djpowell, that's really great man, nice work |
| 14:01 | Chousuke | ambient: type hint the arrays |
| 14:02 | Chousuke | ambient: when using arrays there can be reflection that clojure won't warn about, even with *warn-on-reflection* set :/ |
| 14:03 | Chousuke | I wonder if that can be fixed |
| 14:03 | ambient | well *warn-on-reflection* doesn't at least say anything |
| 14:03 | Chousuke | it won't help with arrays :) |
| 14:03 | ambient | aha |
| 14:05 | ambient | wonder how fast java does this, but currently it's rendering 88k in 0.170 seconds. which is something like 500k ops per second |
| 14:05 | Chousuke | the only way to tell if your array accesses are reflected is to use a profiler :P |
| 14:06 | ambient | there would be some clojure.lang.reflection.foo popping up in the list? |
| 14:06 | Chousuke | something like that anyway |
| 14:06 | ambient | nah, nothing that i can see |
| 14:12 | Chousuke | might be java.lang.reflect something too |
| 14:12 | ambient | simple (time (doseq [i (range 88000)] i)) already takes 60 msec so i doubt there's much reflection |
| 14:15 | Chousuke | might be boxing too |
| 14:15 | Chousuke | remember that function arguments are always boxed |
| 14:17 | ambient | ah, forgot dotimes. it is 3 msec |
| 14:23 | ambient | oh yes. 170 > 30 msec. im happy |
| 14:23 | ambient | just did (double foo) inside let |
| 14:23 | ambient | for all variables |
| 14:24 | ambient | for future reference, i had an actual reflection error with an array and instead of 30 msec it gave me 5000 msec ;) |
| 14:27 | licoresse | Is there a way to automatically load code when starting up clojure? |
| 14:28 | licoresse | like putting something in a . folder...? |
| 14:28 | LauJensen | licoresse, user.clj on the classpath will automatically load |
| 14:28 | LauJensen | ambient, link to the code you just optimized? |
| 14:28 | LauJensen | Chousuke, could you explain boxing ? |
| 14:28 | licoresse | ah, thanks |
| 14:28 | dandersen | Chousuke: You do Clojure nowadays? |
| 14:29 | ambient | LauJensen something just happened to my emacs, will take a sec |
| 14:29 | LauJensen | k |
| 14:29 | ambient | like it permanently colored a portion of my code :/ |
| 14:29 | ambient | http://paste.pocoo.org/show/145692/ |
| 14:30 | LauJensen | ambient, funny I tried that yesterday |
| 14:30 | opqdonut | that's irritating |
| 14:30 | Chousuke | dandersen: it's fun :P |
| 14:30 | opqdonut | there was some function to re-syntaxcolor the buffer |
| 14:30 | dandersen | Chousuke: I'm thinking about using it for real development. I was asked to join a Java-based project, and I refuse to write Java. |
| 14:31 | LauJensen | ambient, thanks |
| 14:32 | Chousuke | LauJensen: boxing is what we call wrapping a primitive value in one of the corresponding classes :P |
| 14:32 | Chousuke | dandersen: heh, well, I suppose you'll have to convert everyone to clojure ;P |
| 14:33 | Chousuke | for me it's just a hobby for now :/ |
| 14:33 | dandersen | Chousuke: I heard about something called "AOT", and being able to use Clojure code from Java. |
| 14:34 | dandersen | Chousuke: As you know, I use CL most of the time. I only started actually looking into Clojure yesterday. =P |
| 14:35 | Chousuke | AOT means ahead-of-time compilation. basically compiling your clojure files to class files :P |
| 14:36 | djpowell | alternatively you can use the RT class to dynamically call clojure from java |
| 14:36 | Chousuke | the java devs will complain :D |
| 14:52 | dandersen | Chousuke: I'm not sure I understand just how it works in reality, but I guess I'll just have to learn Clojure. =] |
| 15:14 | licoresse | I've added user.clj to the /src directory (which is in my classpath), but clojure don't pick it up when at startup |
| 15:14 | licoresse | What am I doing wrong? |
| 15:15 | ambient | (dolist (d (list "path/to/your/stuff")) (add-to-list 'swank-clojure-classpath d)) to your ~/.emacs |
| 15:15 | licoresse | nevermind, found it... |
| 15:15 | ambient | ah, nvm. i should read first |
| 15:15 | licoresse | it was called userS.clj |
| 15:15 | licoresse | ambient: thanks anyway |
| 15:35 | LauJensen | Is there some help/tut/doc out there on how to use reductions? |
| 15:41 | ambient | does clojure yet have any supporting swing libs? like swingbuilder for groovy http://groovy.codehaus.org/Swing+Builder |
| 15:42 | ambient | ,(reductions + (range 10)) |
| 15:42 | clojurebot | java.lang.Exception: Unable to resolve symbol: reductions in this context |
| 15:42 | ambient | :( |
| 15:42 | ambient | reductions is irreplaceable, honestly |
| 15:44 | LauJensen | ambient, there are a few things, did you check out my blog MacSwing meets Enlive? That's one approach, another is something like Miglayout |
| 15:46 | arohner | given a class name, is it possible to figure out whether it is an interface or a real class? |
| 15:46 | arohner | I want supers, but I want to filter out the real classes |
| 15:46 | ambient | LauJensen yeah, that looks nice but it's Mac :) won't fit into my environment where everything is gray, bland and edged |
| 15:47 | rhickey_ | ,(.isInterface Callable) |
| 15:47 | clojurebot | true |
| 15:47 | rhickey_ | (.isInterface Object) |
| 15:47 | rhickey_ | ,(.isInterface Object) |
| 15:47 | clojurebot | false |
| 15:47 | arohner | rhickey_: thanks |
| 15:47 | LauJensen | ambient, oh I didn't mean the styling, I meant the Cellconstraint approach, where you split your window up in cells and assign components to them |
| 15:48 | ambient | ok, i have to grok that then |
| 15:50 | LauJensen | I sent you the code in a priv |
| 16:14 | technomancy | ambient: that's odd; swank-clojure-extra-classpaths still exists as an alias to swank-clojure-classpath |
| 16:14 | technomancy | if you modify one it modifies the other. |
| 16:15 | ambient | *shrug* it just simply didn't work for me |
| 16:15 | technomancy | ambient: emacs 22? |
| 16:15 | ambient | i did (setq swank-clojure-extra-classpaths (list "foo" "bar")) |
| 16:15 | ambient | yes, on win32 |
| 16:16 | technomancy | works on 23... didn't realize that was a new feature. =\ |
| 16:16 | ambient | gnu emacs 23.1.50.1 (i386-mingw-nt6.0.6002) of 2009-06-30 |
| 16:16 | technomancy | and the value of swank-clojure-classpath isn't affected? |
| 16:17 | ambient | i dont really know much about elisp, just the bare necessities to get something set up |
| 16:18 | ambient | technomancy here's my .emacs http://paste.pocoo.org/show/145721/ |
| 16:22 | technomancy | unfortunately I don't have the resources to test exhaustively |
| 16:49 | tomoj | something Very Bad just happened :( |
| 16:49 | tomoj | http://img190.yfrog.com/img190/5002/sshotx.png |
| 16:51 | tomoj | the function that calls sort-by returns, then I try to count the result and that happens, except everythings flickering like it's entering the debugger over and over, and I'm locked in and have to forcefully kill emacs |
| 16:55 | tomoj | does any of that look vaguely familiar to anyone? :( |
| 16:58 | tomoj | looks like slime is trying to dump my huge seq to the screen.. I wonder why it would do that when I told clojure to count the seq? |
| 16:59 | ambient | do you have *print-length* set? |
| 17:00 | ambient | a simple (range 1000000) will kill my emacs if it's not set to some sensible value |
| 17:00 | hiredman | but he is not printing the seq |
| 17:00 | hiredman | he is counting it |
| 17:02 | hiredman | tomoj: have you tried to manually count it? (loop [s some-seq count 0] (if (seq s) (recur (rest s) (inc count)) count)) |
| 17:03 | tomoj | maybe an error is thrown, and part of the output is all of my data? is that possible, I wonder? |
| 17:04 | hiredman | hmmmm |
| 17:05 | technomancy | bleh; clojure is still called clojure-lang in the pom? |
| 17:05 | technomancy | I thought that had been fixed? |
| 17:06 | tomoj | manually counting causes the same freakout |
| 17:07 | hiredman | time to start wrapping stuff in (try (catch Exception e (.printStacktrace e))) |
| 17:09 | tomoj | wow |
| 17:09 | tomoj | setting *print-length* to 3 made the count call return immediately |
| 17:09 | tomoj | (with no errors) |
| 17:10 | tomoj | WTF? |
| 17:11 | tomoj | I set! *print-length* to 3, counted, worked fine. same for 30, 300, 3000, 30000, and 300000. |
| 17:11 | hiredman | interesting |
| 17:11 | tomoj | then I set! *print-length* to nil, and that call never returned, emacs blew up as before |
| 17:11 | tomoj | not on the subsequent count I was going to do, but on set!ing *print-length* to nil |
| 17:12 | ambient | i get different amount of freezing depending on which type of functions i try to print |
| 17:12 | tomoj | (set! *print-length* nil) shouldn't be printing anything, should it? |
| 17:12 | ambient | sometimes it freezes just the repl, sometimes the whole emacs comes unresponsive |
| 17:12 | tomoj | besides, maybe, "nil" |
| 17:12 | tomoj | something seems seriously fucked up |
| 17:12 | ambient | i'd thing print-length of nil meant if was infinite |
| 17:13 | tomoj | OOH |
| 17:13 | tomoj | I think I know what's happening |
| 17:13 | tomoj | I bet it's the stupid trick where when you point at a variable, it prints the value in the minibuffer |
| 17:14 | ambient | heh |
| 17:14 | tomoj | and my value is hundreds of thousands of lines long |
| 17:14 | Chousuke | heh |
| 17:14 | Chousuke | that would be dangerous with infinite seqs :P |
| 17:15 | tomoj | huh, I wonder why that's never bitten me before |
| 17:15 | ambient | on a related note, anyone know how to automatically set *print-length* on emacs start? |
| 17:15 | ambient | or M-x slime |
| 17:16 | somnium | ambient: put it in user.clj? |
| 17:16 | technomancy | ambient: you can use slime-connected-hook |
| 17:17 | tomoj | hahaha, yeah. (def *bar* (iterate inc 1)) RET *bar* <wait a few seconds> "Java heap space...OutOfMemoryError" |
| 17:17 | tomoj | except to store all this data I made my heap really big, and apparently slime blew up before java :( |
| 17:18 | Chousuke | probably swank should bind *print-length* internally :/ |
| 17:18 | Chousuke | at least for the minibuffer thing |
| 17:19 | ambient | trying from user.clj gives error: "unable to establish root binding of: *print-length* with set..." |
| 17:19 | Chousuke | try using alter-var-root :) |
| 17:21 | somnium | technomancy: how do you execute clojure code through elisp with slime-connected-ook? |
| 17:22 | technomancy | somnium: rusty off the top of my head; there's an example in clojure-test-mode |
| 17:22 | technomancy | possibly one in clojure-mode too |
| 17:23 | tomoj | maybe this is something slime is doing without swank-clojure explicitly knowing about it? |
| 17:24 | technomancy | tomoj: sorry, I don't know much about the actual swank->slime protocol. =\ |
| 17:24 | tomoj | seems to only happen for vars like *foo* |
| 17:25 | tomoj | I'll poke around sometime and see if I can figure out where this is happening |
| 17:25 | technomancy | tomoj: you know about the mailing list? |
| 17:27 | tomoj | the clojure one? or swank-clojure, or swank, or slime?... |
| 17:28 | technomancy | http://groups.google.com/group/swank-clojure |
| 17:28 | tomoj | ah, thanks |
| 17:28 | technomancy | just started it a couple days ago |
| 17:43 | solussd | why isn't clojure.core automatically available in any namespace? |
| 17:45 | technomancy | solussd: are you using in-ns? |
| 17:45 | solussd | yes |
| 17:45 | technomancy | you should use the ns macro |
| 17:45 | technomancy | it Just Works |
| 17:45 | danlarkin | ™ |
| 17:45 | technomancy | in-ns is low-level |
| 17:45 | solussd | Ok- I just thought it was weird that java.lang is available, but not clojure.core |
| 17:47 | ambient | oo, more clojure books on the horizon http://www.apress.com/book/view/1430272317 |
| 18:16 | rlb | Is there anything like take-while, but that is lazy, and will return up-to and including the stop-value, i.e. (take-up-to-and-including pred coll)? |
| 18:17 | ambient | take-while seems to be lazy |
| 18:17 | ambient | ,(doc take-while) |
| 18:17 | clojurebot | "([pred coll]); Returns a lazy sequence of successive items from coll while (pred item) returns true. pred must be free of side-effects." |
| 18:18 | hamza | hey guys, i am trying to use velocity from clojure+compojure but i am getting ServletLogChute can not be initialized. it used to work until i added compojure jars in to classpath can anyone tell me what may cause this? |
| 18:18 | rlb | ambient: right - the key bit I was interested in is "up-to-and-including" |
| 18:19 | ambient | ,(take-while #(<= % 5) (range 10)) |
| 18:19 | clojurebot | (0 1 2 3 4 5) |
| 18:21 | ambient | ,(conj (take-while #(< % 5) (range 10)) 5) |
| 18:21 | clojurebot | (5 0 1 2 3 4) |
| 18:22 | rlb | right, but that won't work if you want everything up to and including the first occurrence of 42 in a lazy sequence of random integers. |
| 18:22 | rlb | Of course I can write what I want -- just wondered if there was already soemething there. |
| 18:22 | ambient | just add the 42 to the end manually |
| 18:23 | rlb | ambient: say you're matching for all lines up to and including the first one that starts with "OK" |
| 18:23 | rlb | (and you're reading from a socket, for example) |
| 18:24 | rlb | Anyway, take-up-to-and-including is easy, though I need a better name... |
| 18:24 | ambient | yeah, that is a bit more tricky then |
| 18:25 | technomancy | it's lame, but you could swap an atom in your predicate function that would get checked on the next call |
| 18:25 | ambient | technomancy i dont think that's lame. it's how reductions is done |
| 18:26 | technomancy | ambient: I mean it's lame if it clutters your predicate |
| 18:26 | technomancy | it's not lame as a strategy if you abstract it away |
| 18:26 | ambient | ok :) |
| 18:39 | technomancy | so... metadata on deftests... good idea? |
| 18:40 | danlarkin | I like it |
| 18:40 | danlarkin | but I would |
| 19:14 | danlei | there is a reader macro for getting the read-time value of a form, no? (like cl's #.) |
| 19:16 | danlei | I'm pretty sure there was something like this, but I forgot about it ... |
| 19:17 | Chousuke | #=? |
| 19:18 | danlei | I guess, yes |
| 19:19 | danlei | but how to use it, like in CL, I'd do: #.*standard-output*, but #=*out* wont work |
| 19:20 | Chousuke | hm, right. it actually only accepts a list form IIRC |
| 19:20 | danlei | ok, thanks |
| 19:30 | slyrus_ | ok, i didn't do my homework (the euler exercies), but I did manage to get rid of the refs (easy) and atoms (a little harder) for my bfs |
| 19:30 | lisppaste8 | slyrus pasted "bfs without atoms" at http://paste.lisp.org/display/88865 |
| 19:33 | danlei | ok, I give up :) simple question: how to print something from another thread in my repl thread? I tried things like this: (binding [*out* #=(identity *out*)] ...) |
| 19:37 | danlei | there must be an easy way to do it, but I just don't have an idea :) |
| 19:37 | danlei | *any |
| 19:53 | Chousuke | danlei: something like (let [repl-out *out*] (run-in-thread (binding [*out* repl-out] (code))))? |
| 19:54 | danlei | Chousuke: yes |
| 19:57 | danlei | Chousuke: the outer let is necessary, that's what I was missing. thanks |
| 20:07 | timothypratley | Is there any way to 'switch on arity': If f is inc then call (f a) if f is + call (f a b)? like (take-args f a b) if f is inc it will ignore b? |
| 20:08 | aldebrn | I'm having some trouble figuring out how to get arbitrary precision floats, e.g., exp(-1000) ? |
| 20:13 | aldebrn | Or, e.g., (exp (bigdec -1000)) , is still 0 instead of something more useful. Any hints, much appreciated |
| 20:14 | hiredman | what is exp? |
| 20:14 | hiredman | ,(doc exp) |
| 20:14 | clojurebot | "clojure.contrib.generic.math-functions/exp;[[x]]; Return the exp of x." |
| 20:14 | hiredman | that exp? |
| 20:14 | hiredman | ~def exp |
| 20:15 | aldebrn | Yeah that exp, exponentiation base e |
| 20:15 | aldebrn | Ah it looks like it's just using Java's exp, which probably doesn't know about BigDecimal...? |
| 20:15 | aldebrn | Or ... I may be mistaken |
| 20:17 | timothypratley | user=> 1e-1000M |
| 20:17 | timothypratley | 1E-1000M |
| 20:17 | timothypratley | (+ 1 1e-1000M) - |
| 20:17 | timothypratley | -> spam |
| 20:18 | timothypratley | does that help? |
| 20:19 | hiredman | it looks like generic math provides extendable versions of the java math methods, but doesn't extend them |
| 20:23 | hiredman | you can do something like (defmethod exp [java.lang.BigDecimal] [n] math here) |
| 20:23 | aldebrn | I'm just coming to Clojure from Matlab/Python because I love Lisp, would extending exp to handle BigDecimal be a Clojure core contribution or would it be handled in something else like Incanter, e.g.? |
| 20:23 | hiredman | aldebrn: well the generic math stuff isn't even in the core |
| 20:23 | hiredman | that is in contrib |
| 20:24 | hiredman | have you looked at the javadoc for BigDecimal? |
| 20:26 | aldebrn | hiredman, tell me how? (doc bigdec) seems terse |
| 20:26 | aldebrn | Ohh the Java documentation, ok. |
| 20:28 | hiredman | ,(use 'clojure.contrib.generic.math-functions) |
| 20:28 | clojurebot | nil |
| 20:28 | hiredman | ,(exp e 1) |
| 20:28 | clojurebot | java.lang.Exception: Unable to resolve symbol: e in this context |
| 20:28 | hiredman | bah |
| 20:28 | timothypratley | user=> (.scaleByPowerOfTen 1M -1000) |
| 20:28 | timothypratley | 1E-1000M |
| 20:28 | hiredman | ,(exp 1) |
| 20:28 | clojurebot | 2.7182818284590455 |
| 20:30 | aldebrn | I don't know much about how one implements this kind of thing, looking at mpmath's implementation of arbitrary-precision exp (http://tinyurl.com/yk3yxq5), whew, that's intense |
| 20:31 | hiredman | so it looks like the main stumbling block is BigDecimal's horrible .pow method |
| 20:32 | hiredman | ,(java.math.BigDecimal. (exp 1)) |
| 20:32 | clojurebot | 2.71828182845904553488480814849026501178741455078125M |
| 20:32 | aldebrn | Noob question: difference between "java.math.BigDecimal." and "bigdec"? |
| 20:33 | hiredman | ,(doc bigdec) |
| 20:33 | clojurebot | "([x]); Coerce to BigDecimal" |
| 20:33 | hiredman | ,(bigdec (exp 1)) |
| 20:33 | clojurebot | 2.7182818284590455M |
| 20:33 | hiredman | interesting |
| 20:34 | hiredman | well the out put of (exp 1) is a Double, I think |
| 20:34 | hiredman | ~def bigdec |
| 20:36 | hiredman | ,(class (exp 1)) |
| 20:36 | clojurebot | java.lang.Double |
| 20:37 | hiredman | ,(bigdec (float (exp 1))) |
| 20:37 | clojurebot | 2.7182817459106445M |
| 20:37 | hiredman | ,(bigdec (long (exp 1))) |
| 20:37 | clojurebot | 2M |
| 20:37 | hiredman | nice |
| 20:37 | hiredman | anyway, bigdec seems to lose percision for somereason |
| 20:43 | aldebrn | Right :-/ I will use java.math.BigDecimal. in the meantime |
| 20:43 | aldebrn | Hopefully my complete ignorance of Java will not be too big a problem. |
| 20:44 | hiredman | what you really need is an implementation of pow for [BigDecimal BigDecimal] |
| 20:45 | aldebrn | So exp needs a good pow and a good way to approximate e, are you saying the latter is already in place and just needs the former? |
| 20:47 | aldebrn | I think I have all the pieces to implement a bit of numerical code related to my research except BigDecimal exp :) |
| 20:48 | aldebrn | I've seen this with-precision function in relation to Clojure, but that doesn't seem to change anything |
| 20:49 | aldebrn | ,(with-precision 5 (/ 1 3)) |
| 20:49 | clojurebot | 1/3 |
| 20:49 | aldebrn | ,(with-precision 5 (/ 1 3.)) |
| 20:49 | clojurebot | 0.3333333333333333 |
| 20:49 | aldebrn | ,(with-precision 50 (/ 1 3.)) |
| 20:49 | clojurebot | 0.3333333333333333 |
| 20:49 | aldebrn | heh cool |
| 20:50 | hiredman | you aren't doing bigdecimal math there |
| 20:50 | hiredman | ,(with-precision 5 (/ 1M 3.)) |
| 20:50 | clojurebot | 0.3333333333333333 |
| 20:50 | hiredman | hmmm |
| 20:51 | hiredman | ,(with-precision 2 (/ 1M 3)) |
| 20:51 | clojurebot | 0.33M |
| 20:51 | solussd | ,(with-scale 50 (/ 1 3.)) |
| 20:51 | clojurebot | java.lang.Exception: Unable to resolve symbol: with-scale in this context |
| 20:52 | aldebrn | Gotcha. Maybe I can implement a quick Taylor series expansion for exp for now |
| 21:12 | aldebrn | ~def pow |
| 21:13 | aldebrn | What's the story with these defmathfn-1 and defmathfn-2 (besides the 1 or 2 gives the arity of the function) |
| 21:15 | hiredman | I'm not sure I like generic math |
| 21:16 | aldebrn | by tht you mean java.lang.Math? |
| 21:16 | hiredman | no, I mean clojure.contrib.generic.math-functions |
| 21:18 | aldebrn | Could ou explain your potential dislike? |
| 21:19 | hiredman | well, for one thing, as implemented it is just a wrapper over Math.* |
| 21:19 | mrpika | is anyone else have troubling view parts of the api page on clojure.org? |
| 21:20 | hiredman | but you can go in and flesh it out, but then what happens when some other library you use also fleshes it out, and it not exactly the same way |
| 21:20 | aldebrn | For a language as young Clojure, I'm incredibly impressed at how solid its math capabilities are. But I see what you mean |
| 21:21 | hiredman | I wonder if anyone is using generic.math-functions |
| 21:22 | aldebrn | Luckily there are a number of opensource math libraries that have accumulated plenty of eyeballs to rely on? (As a refugee from Python, I can only cite Numpy, mpmath, Sage) |
| 21:22 | aldebrn | (I am about to :-/ but not for extending the library/language) |
| 21:23 | hiredman | I've never done any math heavy stuff, so I dunno |
| 21:25 | ambient | clojure has incanter, java has colt. those that i've come across |
| 21:27 | aldebrn | Incanter looks fabulous, I will risk making an ass of myself by posting there, asking about math functions that support BigDecimal |
| 21:27 | hiredman | I've haven't used incanter, but the logo is so slick, it has my vote |
| 21:28 | liebke | aldebrn: Incanter doesn't support BigDecimal at the moment, although I think Parallel Colt does, so there is potential to add support in the future |
| 21:28 | liebke | hiredman: thanks for the logo endorsement :) |
| 21:30 | aldebrn | liebke, thanks for the info. Incanter has almost every piece of the puzzle I need for some research code I'm writing (Weiss-Weinstein bounds on estimator mean squared error), I just need BigDecimal exp and will look at Parallel Colt |
| 21:31 | hiredman | :) |
| 21:35 | aldebrn | liebke, what are your future plans for Incanter? |
| 21:36 | liebke | aldebrn: Here's the roadmap as it stood a month ago: http://incanter.wordpress.com/2009/09/03/incanter-roadmap/ |
| 21:37 | liebke | aldebrn: I might have to take back what I said about Parallel Colt supporting BigDecimal :( |
| 21:37 | aldebrn | :( on its frontpage I only see single/double |
| 21:37 | hiredman | liebke: what font is that, in the logo, btw? |
| 21:38 | aldebrn | Am I justified in being very impressed at how complete Incanter is, given that it's only less than 2 years old? |
| 21:39 | liebke | hiredman: I'll look it up, I always forget -- I really like it |
| 21:39 | liebke | aldebrn: thanks, Incanter is less than a year old, but I was able to leverage Parallel Colt and JFreeChart |
| 21:43 | liebke | hiredman: the font is Garamond |
| 21:43 | hiredman | ah, thanks! |
| 21:44 | aldebrn | liebke, I take it R is your goal for Incanter. Unreasonable question: do you have any experience with Numpy/Matplotlib's capabilities or Matlab's capabilities? (I suspect I will be asking a number of questions of the Incanter community in coming days, just wondering how to frame them) |
| 21:45 | liebke | aldebrn: I've never used Numpy or Matplotlib, but I've heard great things about both |
| 21:55 | slyrus_ | liebke: is this the R-alike in clojure I've heard vague rumors of? |
| 21:55 | liebke | slyrus_: yep |
| 21:59 | slyrus_ | the suggested google search "incanter's absorption elitist jerks" is clearly not the one i'm looking for |
| 21:59 | liebke | :) |
| 22:00 | liebke | the website is http://incanter.org |
| 22:01 | slyrus_ | cool. for a while i very much wanted to do something like that in CL and went so far as to build an R<->SBCL bridge, but I've pretty much abandoned the effort. |
| 22:01 | slyrus_ | doing something R-like with clojure sounds like a great idea. |
| 22:02 | liebke | slyrus_: have you seen common-lisp-stat? http://github.com/blindglobe/common-lisp-stat |
| 22:02 | slyrus_ | no, I haven't seen it lately, but I remember tony was embarking on that |
| 22:15 | aldebrn | So any hints on where I would add code to make pow or exp handle BigDecimals? In Incanter, Clojure itself, or Java? |
| 22:16 | aldebrn | Meaningless question I know.. |
| 22:17 | hiredman | I'm not sure how to implement pow |
| 22:17 | chouser | BigDecimal has a pow method |
| 22:18 | chouser | (.pow 5M 10) |
| 22:18 | chouser | ,(.pow 5M 10) |
| 22:18 | clojurebot | 9765625M |
| 22:18 | hiredman | chouser: but it takes a double or an int or something |
| 22:18 | chouser | yeah, an int |
| 22:19 | aldebrn | Is the Java implementation of BigDecimal opensource and hackable? do people regularly fix things like this "upstream" in Javaland, or handle it within Clojure or a library? |
| 22:19 | hiredman | to implement exp of a bigdecimal, I think you need something like (.pow e bigdecimal) |
| 22:19 | chouser | aldebrn: every time I suggest submitting a patch to the JVM I get laughed at, so that's probably not the way forward. |
| 22:19 | hiredman | :P |
| 22:20 | aldebrn | (pow (compute-e prec) bigdecimal) does indeed work for some combinations of bigdecimal and prec, but there seems to be faster ways to do it |
| 22:20 | aldebrn | in other cases |
| 22:20 | chouser | there's a clojure.contrib.math that would probably welcome such things. |
| 22:20 | aldebrn | chouser, thanks for the info. |
| 22:20 | liebke | aldebrn: hmm, Incanter uses Math/exp for scalar values and Parallel Colt's version of exp for vectors and matrices. So, you could add exp support for BigDecimal scalar values to Incanter, if you're interested |
| 22:21 | aldebrn | I'll be very interested in vectorized exp for matrixes down the road liebke |
| 22:21 | hiredman | (defmethod pow [java.lang.Number java.lang.BigDecimal] [base exp] some math here) |
| 22:21 | aldebrn | But I suspect it'll be challenging enough to do the scalar case, thanks for the suggestion |
| 22:22 | liebke | aldebrn: me too :) but that's going to be hard until Parallel Colt does |
| 22:24 | chouser | rhickey: any chance function params will ever support :as ? |
| 22:25 | aldebrn | liebke, I'll try to port Mpmath's real-valued exp to Clojure and bug this channel/Incanter group: http://tinyurl.com/yk3yxq5 |
| 22:25 | liebke | aldebrn: that sounds great! |
| 22:27 | hiredman | chouser: what do you mean by that? |
| 22:35 | slyrus_ | liebke: the core of incanter reminds of me of what I was trying to do with my CLEM matrix package for CL, but using colt probably helps greatly with a lot of the heavy lifting |
| 22:36 | slyrus_ | liebke: have you (or others) tried to get clojure talking directly to an embedded R? |
| 22:36 | liebke | slyrus_: yeah, Colt does most of the heavy lifting |
| 22:38 | slyrus_ | a proper lispy language, java gui stuff, and bioconductor all under one roof would be pretty neat |
| 22:38 | liebke | slyrus_: I haven't heard of any attempts to do so |
| 22:38 | liebke | Could be cool :) |
| 22:41 | slyrus_ | there must be some R/Java interoperability somewhere |
| 22:41 | liebke | slyrus_: I do think there are already bridges between R and Java |
| 22:42 | slyrus_ | i suppose that would be the place to start |
| 22:42 | liebke | RServe has a Java API too |
| 22:44 | slyrus_ | liebke: hmm... I would think that JNI to R would be the way to go, but, then again, I haven't looked at RServe |
| 22:56 | technomancy | liebke: it's good to see you moving away from jars in the git repo |
| 22:56 | liebke | technomancy: haha, I thought you would like that :) |
| 22:56 | technomancy | took me 40 minutes to push my fork out; it was absurd |
| 22:58 | technomancy | once I get swank mavenized I want to focus my efforts on making it easy for clojure hackers to package their libraries up the right way |
| 22:58 | liebke | yes, I saw you tweet about that, I think that's what finally got me to remove the jars from the repository, I didn't want you coming after me next :) |
| 22:58 | technomancy | you can be forgiven for checking jars into git right now just because the alternatives are so bad. |
| 22:58 | technomancy | hah! |
| 23:26 | lisppaste8 | slyrus annotated #88865 "another bfs/dfs iteration" at http://paste.lisp.org/display/88865#1 |
| 23:49 | solussd | How do I import everything from a java package? e.g., I want to do something like this: (import '(java.swing *)) |
| 23:49 | solussd | *java -> javax |
| 23:50 | technomancy | solussd: clojure doesn't work like that |
| 23:50 | technomancy | import what you use |
