#clojure – 2009-06-06

2009-06-06

07:59	alrex021	I am having a problem using the :use to import my functions from another clj file.
07:59	alrex021	http://pastebin.com/ma22491
07:59	alrex021	I get a Caused by: java.lang.Exception: Unable to resolve symbol: add-message in this context
08:10	Chousuke	alrex021: why do you have :gen-class in the concurrency namespace?
08:11	alrex021	Chousuke: Though it will then use the name of my file as the class name for compilation. If I take it out, it still gives me a same problem
08:13	Chousuke	alrex021: what command are you using to run your code?
08:14	alrex021	I am actually using the Enclojure in Netbeans which seems to generate the Java classes at compile time.
08:14	Chousuke	hm
08:15	Chousuke	it shouldn't really matter whether it's compiled or not.
08:15	alrex021	But the code seems fine? I'm not missing something obvious?
08:15	Chousuke	hmm
08:16	alrex021	Chousuke: I'm new to Clojure so am afraid I could very easily be doing something stupid
08:16	Chousuke	It seems fine. This is just a guess, but try changing the (:use (com.lunasoftworks.concurrency)) to (:use (com.lunasoftworks concurrency))
08:17	Chousuke	that way, it matches the doc string examples
08:17	alrex021	I am just truing to learn here to group a set of functions into their own file and then use the :use to load them
08:17	Chousuke	though the dotted form should work too :/
08:18	alrex021	Chousuke: well you no what, it worked
08:18	Chousuke	hmm :)
08:18	alrex021	skipping the last dot that is before concurrency
08:18	alrex021	(:use (com.lunasoftworks concurrency))
08:18	alrex021	interesting :)
08:18	Chousuke	the :use form works so that you can list multiple namespaces after the prefix.
08:19	Chousuke	(:use (clojure.contrib strutils2 sql monads)) like that
08:19	alrex021	Ahh, I have seen that
08:19	Chouser	perhaps (:use com.lunasoftworks.concurrency) would also work?
08:20	Chousuke	right.
08:20	Chousuke	try that :)
08:20	Chouser	...using inner parens only with the dotted form?
08:20	clojurebot	????? ????
08:20	alrex021	though whats funny is that I got get a syntax error or something similar at compile time complaining about my :use. ..
08:21	alrex021	Chouser: oh ok, regarding your last line, let me give that a try..\
08:22	alrex021	Ahhhh, you right. Dropping the parents when not specifying the multiple uses, works
08:22	alrex021	So to confirm, this works too: (:use com.lunasoftworks.concurrency)
08:22	Chousuke	require's documentation is out of date :/
08:22	Chousuke	For example, the lib 'x.y.z has root directory <classpath>/x/y/z; root resource <classpath>/x/y/z/z.clj.
08:23	Chousuke	not true anymore :P
08:23	alrex021	Chousuke: In your opinion, which way would be recommended: (:use com.lunasoftworks.concurrency) OR (:use (com.lunasoftworks concurrency))
08:23	Chousuke	either is fine
08:24	Chousuke	use whichever you like :)
08:25	alrex021	gr8 :) thx Chousuke for your help
12:50	tayssir	Hi! Does anyone know a resource where I can learn why add-classpath isn't supposed to work on Emacs/Slime? (When I try it, it just returns nil and doesn't seem to update anything. I realize it's not considered good to use, but I can't find a page explaining why it should fail silently..)
12:58	dnolen	tayssir: add-classpath doesn't return a value, it returns nil.
13:59	Anniepoo	hmm.... I seem to have broken my La Clojure install. When I try to 'Edit configurations' I don't see any entries - Add Configuration I see two entries for Clojure Script. Setting up based on either one, then trying to run - just returns me to an Edit Configurations dialog.
14:05	Anniepoo	Strange, adding a trivial Java class with a main and setting up a config for it fixes the problem. It then becomes possible to set up Clojure scripts normally
14:20	Drakeson`	1) how can I make an alias for "clojure.contrib" to make it easier to load things? 2) Is it possible to have a :use at the top of the file in the ns form that pulls in some other libraries? (an [empty] meta "library")
14:21	kotarak	Drakeson`: (require '(clojure.contrib [def :as def] [duck-streams :as ds]))
14:21	kotarak	Drakeson`: there are things like import-ns or so. But in general the answer to 2) is: no.
14:22	Drakeson`	kotarak: thanks
14:25	Drakeson`	assume I run clojure by doing: java -cp all.jar clojure.main . Is it possible to ask such running instance of clojure to re-load all.jar (meanwhile, all.jar has possibly been changed on the disk)?
14:25	Anniepoo	anybody recognize this problem with La Clojure?
14:25	Anniepoo	Language with ID 'Clojure' is already registered: class org.jetbrains.plugins.clojure.ClojureLanguage
14:25	Anniepoo	java.lang.Throwable
14:25	Anniepoo	at com.intellij.openapi.diagnostic.Logger.error(Logger.java:48)
14:25	Anniepoo	at com.intellij.lang.Language.<init>(Language.java:70)
14:25	Anniepoo	at com.intellij.lang.Language.<init>(Language.java:55)
14:25	clojurebot	clojure is the bestest programming language available.
14:25	Anniepoo	at com.intellij.lang.Language.<init>(Language.java:51)
14:25	Anniepoo	at org.clojure.intellij.ClojureLanguage.<init>(ClojureLanguage.java:24)
14:25	Anniepoo	at org.clojure.intellij.file.ClojureFileType.<init>(ClojureFileType.java:42)
14:25	Anniepoo	at org.clojure.intellij.file.ClojureFileType.<clinit>(ClojureFileType.java:34)
14:25	Anniepoo	at org.clojure.intellij.file.ClojureFileTypeLoader.createFileTypes(ClojureFileTypeLoader.java:23)
14:25	Anniepoo	at com.intellij.openapi.fileTypes.impl.FileTypeManagerImpl.a(FileTypeManagerImpl.java:185)
14:26	Anniepoo	at com.intellij.openapi.fileTypes.impl.FileTypeManagerImpl.<clinit>(FileTypeManagerImpl.java:333)
14:26	Anniepoo	at java.lang.Class.forName0(Native Method)
14:26	Anniepoo	at java.lang.Class.forName(Class.java:247)
14:26	kotarak	Anniepoo: please use a paste
14:26	kotarak	lisppaste8: url
14:26	lisppaste8	To use the lisppaste bot, visit http://paste.lisp.org/new/clojure and enter your paste.
14:28	lisppaste8	Anniepoo pasted "alreadyAClojure" at http://paste.lisp.org/display/81460
14:30	kotarak	Drakeson`: I don't think so. Jars cannot be reloaded AFAIK.
14:31	Drakeson`	kotarak: thanks. it is important to know.
14:33	kotarak	Drakeson`: there are things like Java Rebel, which reload classes. But I don't know how that works. And whether this includes a changed jar.
14:33	kotarak	Anniepoo: maybe you installed a older version of the plugin?
14:34	kotarak	And now the new one has a conflict with that?
14:34	Anniepoo	yes, good possibility
14:35	Anniepoo	I removed a bunch of plugins I wasn't using, cause I was tired of the long startup time,
14:35	Anniepoo	including the disabled 'clo jet' - might have been that?
14:36	Drakeson`	kotarak: I guess I think too pythony. In python I can place a new thing.py in the PATH and then ask the running instance to import thing.
14:36	kotarak	Drakeson`: you can do that with .clj files to. Then use eg. (require :reload ...) or (require :reload-all ...) to reload the .clj files.
14:37	kotarak	Drakeson`: but that's limited to file system files. files in jars are different.
14:37	kotarak	Anniepoo: no clue. I don't have use IntelliJ. Just guessing from the failure messages...
14:38	Anniepoo	yah, hoped it was something somebody had a formulaic answer for
14:38	Anniepoo	going to try removing and reinstalling la clojure
14:38	Drakeson`	kotarak: is there a path I can put new-thing.clj after I started running a clojure instance, and then ask the running instance to require it?
14:39	kotarak	Drakeson`: You can add a directory to your classpath. Then start the JVM: java -cp my-dir:clojure.jar clojure.main -r. Copy a file to my-dir. "require" it.
14:40	kotarak	The file has to follow the usual nameing conventions.
14:42	Drakeson`	kotarak: that's great. thanks a lot.
14:45	kotarak	Drakeson`: you are welcome
14:57	quidnunc	cgrand: Is it possible to use xml-zip functions on the results returned by enlive's select?
15:51	leafw	I am trying to compile clojure-contrib.jar with AOT, but it's not happening: I don't get the 1.7mb file but a .jar file of ~300 kb like the slim.jar one
15:51	leafw	what has changed? Having clojure.jar in the -Dclojure.jar=... is no enough?
15:53	leafw	also, how can one get clojure.jar itself to be compiled with AOT?
16:00	kotarak	leafw: AFAIK, clojure.jar is per default AOT compiled. The non-compiled one is clojure-slim.jar. "ant -Dclojure.jar=..." was enough to AOT compile contrib when I check the last time.
16:01	leafw	kotarak: thanks. But it's not compiling now -- clojure-contrib.jar, at least.
16:01	kotarak	Let me check here.
16:03	hoeck	leafw: just compiled it here, what says your ant output?
16:05	leafw	now it compiles, after I compiled clojure.jar again (?)
16:05	leafw	2.6 mb clojure-contrib.jar, as expected
16:05	leafw	no idea what was happening here.
16:06	hiredman	my clojure-contrib.jar is around 4mb
16:06	leafw	by the way, my custom-build GUI clojure REPL stopped working after clojure svn revision 1352
16:06	kotarak	o.O
16:07	kotarak	4mb! Mine is also around 2.5mb
16:07	leafw	hiredman: what JVM? Lots of inlining in 4m!
16:08	leafw	if anyone knows of a nice way to create a REPL with recent versions, please let me know. The old clojure.lang.Repl is basically deprecated, and currently devoid of any content. How does one use clojure.main for a Repl?
16:09	hiredman	4.1M clojure-contrib.jar
16:10	kotarak	leafw: one call the repl function form clojure.main with lots of callbacks to configure everything. There is also a stream-repl somewhere.
16:10	hiredman	java -cp clojure.jar clojure.main will print out a nice help message
16:11	cp2	450MHz P3 running F@H
16:12	cp2	im such a contributor
16:12	leafw	hiredman: no help message here. How do you make it show?
16:13	leafw	I am going to try to emulate clojure.main, simply.
16:13	hiredman	oh
16:13	hiredman	huh, I thought it printed out the help message if called with no args
16:13	leafw	no, goes to repl directly.
16:14	hiredman	so there is a repl for you
16:14	kotarak	leafw: you lookup the docstring of clojure.main/repl or so.
16:14	kotarak	you can ...
16:20	leafw	it's very frustrating. I had a working REPL in a GUI, and not anymore. I keep getting : REQUIRE.invoke(CLOJURE_MAIN)
16:21	leafw	sorry
16:21	leafw	java.lang.ExceptionInInitializerError
16:21	leafw	at clojure.lang.Namespace.<init>(Namespace.java:32)
16:21	leafw	at clojure.lang.Namespace.findOrCreate(Namespace.java:122)
16:21	leafw	at Clojure.Clojure_Interpreter.<clinit>(Clojure_Interpreter.java:47)
16:21	leafw	which basically means, touching the Namespace makes it fail.
16:21	kotarak	Look at the cause.
16:21	leafw	4 concatenated causes
16:21	kotarak	It will tell you why there was in ExceptionInInitializerError.
16:22	leafw	yes kotarak , I know. The problem is: what does clojure need to start accepting commands/statements?
16:23	leafw	before, one just did a refer to the user namespace
16:23	leafw	now that is not accepted.
16:23	leafw	(Exception)
16:24	leafw	none of the 4 causes have anything to do with my application. They are all lost in the undocumented realm of what does clojure need to start up its machinery.
16:24	leafw	before, with the non-dummy clojure.lang.Repl class, it was clear.
16:25	leafw	now, with clojure.main, its no longer clear -- or what the main has it's not sufficient. Merely copying it fails.
16:32	leafw	needless to sya, very frustrating
16:32	leafw	s/sya/say/
16:32	kotarak	Hmm.. What happens if you call clojure.main/repl directly?
16:32	leafw	kotarak: no such method ... it's legacy_repl(...)
16:33	leafw	which is just final static private Var LEGACY_REPL = Var.intern(CLOJURE_MAIN_NS, Symbol.create("legacy-repl")) and then REQUIRE.invoke(CLOJURE_MAIN) and then LEGACY_REPL.invoke(RT.seq(args))
16:34	leafw	i.e. it creates symbols, it require them, and then it invokes them (?) as if that was supposed to do something. Are this magic tokens?
16:34	leafw	and I cannot do so, because it would start at REPL in stdout, which is not what I want.
16:35	leafw	I don't want to start a REPL. I have my own LineNumberingPushbackReader that reads from a TextArea after return.
16:36	kotarak	leafw: have a look in src/clj/clojure/main.clj for the repl function.
16:37	leafw	looking
16:37	kotarak	leafw: it let's specify read and write hooks and such
16:38	leafw	kotarak: I am reading the doc for repl-read. Sounds interesting
16:38	kotarak	leafw: a little further the docstring of repl should also be interesting for you.
16:39	leafw	on it atm
16:43	leafw	so essentially I have to define new thread-bound vars in and out and all should be fine
16:43	leafw	after invoking main fn.
16:44	leafw	up to know I was also manually managing e, 1, 2, 3 and others
16:44	leafw	doesn't look like it'll do it for me, but at the same time it doens't return anything ... it's a bit onfusing.
16:48	leafw	so far I was using out only, and relying on LineNumberingPushbackReader lnpr = new LineNumberingPushbackReader(new StringReader(text)); and a Object r = LispReader.read(lnpr, false, EOF, false); to parse it.
16:49	leafw	I see no advantage to using clojure read fn
16:50	kotarak	leafw: read is maybe the more stable API
16:50	leafw	I would still have to set a new in everytime, and call invoke on the "repl-read" Var.
16:50	leafw	the problem is I don't understand at all what changed. Why it can't work now.
16:51	leafw	the Exceptions are totally not useful
16:57	leafw	failing at something as basic as : static final Var in_ns = RT.var("clojure.core", "in-ns"); I had created clojure-core before that as: static final Symbol CLOJURE = Symbol.create("clojure.core");
17:01	leafw	I think I am starting to understand the problem: the reader assumes there is a valid in anyway somewhere.
17:02	leafw	but I cannot set it via RT.var because RT.var itself is throwing that error.
17:06	leafw	it puzzles me beyond end that clojure.main can call, in its static private variables, RT.var(...), but I can't: throws an Exception.
17:13	elight	Hi all. Anyone know if there's been any movement toward getting Clojure running on Android?
17:14	elight	I converted the Clojure JAR to Dalvik bytecodes but the blasted thing barfs when I try to run it in the emulator from shell.
17:14	kotarak	elight: There is.
17:14	kotarak	elight: you could search the google group for threads.
17:14	elight	kotarak: I've done a bit of googling. Information seems sparse. Mostly that Rich has been considering it.
17:15	kotarak	elight: there was someone working on it. Maybe you can ask him directly.
17:15	elight	kotarak: Huh. K, thanks.
17:16	elight	Just dying to have something other than vanilla Java to work in. Vanilla Java is hell....
17:17	elight	kotarak: Hrmmm... git://github.com/remvee/clojure.git clojure-androi ?
17:17	elight	kotarak: Hrmmm... git://github.com/remvee/clojure.git clojure-android ? (typo)
17:18	kotarak	elight: ? I don't know. Never used Android....
17:18	elight	kotarak: ah, ok
17:19	kotarak	elight: I would just contact the author of the threads in the group.
17:19	kotarak	It seems he got relatively far..
17:19	leafw	kotarak, how does the nailgun server run clojure? That is conceptually similar--source code available?
17:21	kotarak	leafw: this is really a big hack. It "starts" a class. The class is generated via gen-class. In the class the whole environment is tugged away, because the connection are not contiguous. For each connect, the env is swapped in and stored away again after evaluating the request.
17:21	kotarak	This happens in src/de/kotka/vimclojure/nails.clj in the Repl nail.
17:23	leafw	kotarak: ok.
17:23	kotarak	leafw: it basically uses in etc. provided by nailgun.
17:23	leafw	kotarak: I tried running clojure.main.main(new String[0]) and ... it fails. Fails! Can only be run from the command line
17:23	kotarak	That magic is in the defnail macro, IIRC
17:26	leafw	considering current state of things, until someone can explain conclusively ( rhickey ) why clojure.main.main(new String[0]); cannot be run from wnywhere lese except the command line, I go back a dozen commits. What a pain.
17:28	cgrand	quidnunc`: it depends -- you may need to change select*
17:37	lisppaste8	cgrand pasted "zip-select for quidnunc`" at http://paste.lisp.org/display/81467
17:40	Anniepoo	I had found some way of getting a popup of the doc string for lib function in La Clojure. Now I've lost track of it. Can someone please tell me what it is?
17:41	drewolson	hey all. i'm working on a clojure wrapper of the github api and had a question about the best way to test functions that will eventually make an http request
17:41	drewolson	i'm an oo language, i'd usually just stub out the http call but i'm not sure how to approach this in clojure
17:41	drewolson	*in an
17:43	hiredman	you factor out the actually http-request into the simplest function you can, then when testing, you just (binding [http-request-fn somedummy-fn] tests here)
17:44	drewolson	hiredman: awesome, that's exactly what i was looking for
17:44	drewolson	will that binding affect all namespaces?
17:45	hiredman	hmmm
17:46	hiredman	actually, there is the possibilty for a lot of complexity there, so I am note sure
17:46	hiredman	I ahve used it in a few similar situations across namespaces
17:46	drewolson	right, that's what i was thinking... i have a namespace for user requests, which uses a method in a namespace called "foo" to make the http request
17:47	drewolson	i'd like the function in foo to behave in a specific way for a given test. seems tricky.
17:51	drewolson	hiredman: actually, that did seem to work
18:50	Anniepoo	I had found some way of getting a popup of the doc string for lib function in La Clojure. Now I've lost track of it. Can someone please tell me what it is?
18:51	tbatchelli1	I think it's Ctrl+J, but I believe it only works when looking up Java methods, but not for clojure vars
18:51	Anniepoo	hmm
18:52	tbatchelli1	the lookup of documentation on clojure variables and functions is not implemented yet, according to Ilya
18:52	Anniepoo	thanks
18:52	Anniepoo	I must be confusing it with ctrl shift I for the java function lookup
20:21	chouser	,Math/PI
20:21	clojurebot	3.141592653589793
20:26	cp2	Cherry/PI
20:28	chouser	,Cherry/PI
20:28	clojurebot	yummy!