#clojure – 2013-02-18

2013-02-18

00:00	smnirven	squiggly: are you just looking for how to get emacs, leiningen 2, and nrepl setup?
00:01	squiggly	smnirven: I was probably just looking for the keyword nrepl :D
00:01	smnirven	ahh, so you got it werkin?
00:02	squiggly	smnirven: No, I just wasn't sure what I was looking for - I found their Github though and that helps a lot
00:04	clj_newb_2345	https://github.com/hraberg/shen.clj looks good. Is the author here?
00:04	smnirven	so you've got "lein repl" running in your project, and you've nrepl.el installed?
00:07	sgarrett\|afk	Anyone tried to use Compojure to handle OAuth redirect_uri callbacks? Facebook is adding the access token like "?method=login#access_token=asdb1235". When I print out the params I just get {:method "login}.
00:07	squiggly	smnirven: I just installed nrepl.el and it's working, thanks - I just wasn't sure what I should be searching for...
00:08	smnirven	okay, cool
00:08	smnirven	happy hacking
00:11	squiggly	smnirven: Thanks! :)
00:17	ucb	clj_newb_2345: thanks for pointing me to shen
00:18	clj_newb_2345	ucb: please return the favor by writing a good tutorial :-)
00:18	ucb	clj_newb_2345: for shen? there's one I'm reading here http://www.shenlanguage.org/learn-shen/tutorials/shen_in_15mins.html#shen-in-15mins
00:19	ucb	well, hardly a tutorial, but yeah
00:19	clj_newb_2345	I feel like it's not very representative of it's claimed power.
00:19	ucb	I'd have to experience said power before I can write anything about it :)
00:21	ucb	oh, there's a book even
00:22	clj_newb_2345	unfortunately not available on kindle or pdf
00:41	ucb	indeed
00:46	stephenwan	,clojure-version
00:46	clojurebot	{:major 1, :minor 5, :incremental 0, :qualifier "RC6"}
01:43	clj_newb_234	The following code compiles and runs. What am I doing wrong?
01:43	clj_newb_234	(ann test1 (All [x y] [x y -> x])) (defn test1 [a b] "hello world") (println (test1 1 2))
01:43	clj_newb_234	(this is using core.typed)
01:43	clj_newb_234	I would be happier if I got an error somewhere.
03:13	nonuby	working with compojure got something like this (GET /search [check-in check-out] ..) where they check in/out may or may not be specified I want to set them to a default value if nil, should I do this with a let and cond?
05:18	nonuby	using compojure, if I produce a map { :a 'always here' :b (cookies "maybe") }, if :b is nil i dont want the key in there, whats the most idomatic way of handling this ?
05:19	nonuby	i suppose i could do (if (contains? "maybe" cookies) {:a 'always here' :b (cookies "maybe") } {:a 'always here' })
05:19	nonuby	but i presume there is a dozen better shortcuts
05:28	AtKaaZ	,(. (var for) alterRoot (fn [oldfn & the123args] (do (println oldfn the123args) (fn [callerForm someNil & restt] (println callerForm someNil restt)))) '(1 2 3))
05:28	clojurebot	#<Exception java.lang.Exception: SANBOX DENIED>
05:28	AtKaaZ	nice
05:29	AtKaaZ	&(. (var for) alterRoot (fn [oldfn & the123args] (do (println oldfn the123args) (fn [callerForm someNil & restt] (println callerForm someNil restt)))) '(1 2 3))
05:29	lazybot	java.lang.SecurityException: You tripped the alarm! class clojure.lang.Var is bad!
05:30	clgv	AtKaaZ: trying to hack clojail?
05:30	AtKaaZ	clgv: i just stumbled upon this line in clojure.core (. (var defn) (setMacro)) and thought to test the bots:)
05:31	clgv	AtKaaZ: ah you have to do that locally ^^
05:31	AtKaaZ	yep, works on repl
07:42	hyperboreean	what's the idiomatic way of doing something like: if condition: return nil else: return computed_value ?
07:42	nonuby	(when condition computed_value) returns nil if not condition
07:43	nonuby	if condition is dependent on computed_value then when_let
07:43	nonuby	there is when-not
07:43	nonuby	for inverse of when too
07:43	hyperboreean	nonuby: thanks, checking when/when-not right now
08:07	cmdrdats	hmm, trying to figure out what I'd name a macro that changes (def…. f [x] [y] (+ x y)) to (defn f [x] (fn [y] (+ x y))) ?
08:08	cmdrdats	I'd say currying, but there's a subtle difference, in that (def… f [x & xs] [y & ys] ~body) would be legal and transform to (defn f [x & xs] (fn [y & ys] ~body))
08:36	ro_st	anyone using clj-webdriver and has any idea why using it with firefox is so slow?
08:41	ucb	ro_st: because firefox
08:42	ro_st	sending instructions down are fast, but checks against the dom are DOG slow
08:42	ro_st	hash tag live with it? :-)
08:47	hcumberdale	Hi ;)
08:48	hcumberdale	is there a bug in 4clojure.com, crashing when somebody klicks at "Top Users" > "All Users" ?
08:49	hcumberdale	result nginx/0.7.65 - 504
09:23	clgv	hcumberdale: works here. but there is some AJAX happening there
09:24	hcumberdale	clgv: page crashed!?
09:24	clgv	hcumberdale: no
09:25	clgv	but the server seems to be pretty slow
09:26	hcumberdale	clgv: slows down
09:26	hcumberdale	then dies
09:26	hcumberdale	502 Bad Gateway
09:26	clgv	oh right. happened when I started a search ^^
09:26	clgv	takes forever and then died ^^
09:26	hcumberdale	ya! searching in 'all' users
09:26	hcumberdale	that's it
09:27	clgv	uff 4clojure DOS...
09:27	Hodapp	DOS? Where?
09:27	clgv	hcumberdale: you want to write a ticket, right? ;)
09:28	hcumberdale	@github?
09:28	clgv	yeah
09:28	clgv	hcumberdale: but it seems to recover at least
09:29	hcumberdale	clgv nope ;)
09:30	hcumberdale	There is a restart after oom excpt.
09:30	clgv	yeah, that is what I meant with "recover" ^^
09:32	sh10151	A quick browse of the Leiningen docs doesn't reveal anything about Maven-style filters -- if a library's XML config needs a value specified at runtime to be substituted in, can this be done with Leiningen?
09:34	hcumberdale	clgv: most easy dos with curl
09:56	bbloom	Frozenlock: what i'm saying is that (-foo ...) is not special like (.foo ...) and (.-foo ...) are
09:56	bbloom	Frozenlock: it's a bit confusing, i agree
10:10	arkx	Ok, this is weird. I've managed to break ClojureScript's doseq somehow. "Uncaught TypeError: Property 's' of object [object Object] is not a function". Only happens in :advanced mode.
10:10	arkx	Changing the offending code to (dorun (for ...)) works just fine.
10:12	clgv	arkx: you wont get any help if you dont show the minimal viable code snipet that causes the error ;)
10:13	arkx	Yeah, I know. It's really hard to extract a minimal snippet from the codebase, since I have no idea how I broke doseq.
10:13	bbloom	worth noting: dorun is a function, doseq is a macro
10:13	arkx	It used to work just fine with doseq previously…
10:13	arkx	I expect if I created a sample project, doseq would work just fine there.
10:14	arkx	bbloom: isn't for still macro?
10:15	bbloom	arkx: i mention it b/c it's re-implemented in core.clj for clojurescript and does some stuff like directly access .nth
10:15	arkx	It's really hard to debug the Google Closure Compiler advanced mode output and the problem goes away if I switch to :whitespace mode
10:16	bbloom	arkx: oh, yeah, crazy hard
10:16	bbloom	what about :simple mdoe?
10:16	bbloom	mode*
10:16	bbloom	try with :pretty-print true, as well
10:17	clgv	arkx: do you have that code in a version control system, by any chance?
10:17	arkx	clgv: yes, private git repo
10:17	clgv	arkx: in git you could use `bisect` to detect when it broke
10:17	dnolen	arkx: minimal case would be helpful - we'd like to address the issue if there's a bug in doseq we haven't seen yet.
10:18	arkx	I'm trying to cook one up, but so far all the minimal cases just work.. there's something pretty subtle at work here.
10:18	arkx	doseq works just fine with :simple mode as well.
10:18	arkx	I only see the problem with :advanced.
10:26	arkx	Ok, doseq is only broken in that one particular namespace.. what on earth is going on here. Some import fail?
10:27	bbloom	arkx: do you use aget or aset anywhere in your code?
10:28	arkx	No.
10:29	bbloom	arkx: can you delete code via a binary search down to a minimal repo?
10:30	arkx	https://gist.github.com/arkx/11e6788fdbc807e79b8b
10:30	arkx	I've cut some irrelevant stuff out, hopefully retaining enough
10:30	bbloom	arkx: can you eliminate the dependencies?
10:30	arkx	I'll try.
10:40	antares_	arkx: you are shadowing empty
10:40	antares_	which may be used by into and similar core functions
10:41	augustl	does clojure.java.jdbc have a method of creating IN queries from sequences? for example, (jdbc/update-values :my-table ["`id` IN ?" my-seq-here] values)
10:41	augustl	I've tried a few different sequence types, I get exceptions from all of them though
10:44	arkx	antares_: still happens without empty
10:44	arkx	updated the gist
10:44	bbloom	antares_: shaddowing shouldn't be an issue, since macros resolve namespaces
10:44	bbloom	arkx: keep narrowing it down, you're getting closer :-)
10:44	antares_	bbloom: but is doseq a macro?
10:44	arkx	doseq is a macro, but so is for
10:45	arkx	and (dorun (for ...)) works
10:45	arkx	also, just switching from :advanced to :simple or :whitespace works
10:45	bbloom	antares_: it is, so it's possible that doseq has a bug where it uses an unqualified name that is resolved incorrectly
10:45	arkx	and doseq is only broken in this one namespace
10:45	bbloom	antares_: but let's wait to see how much further he can narrow it down
10:45	arkx	It's used elsewhere in the codebase without issues
10:45	ToBeReplaced	augustl: not that i know of; i think you need to create the string yourself... not sure if it's possible to write a parametrized query with an IN
10:45	bbloom	arkx: can you eliminate the dependency on vision.ui.model ? or inline the code that's necessary
10:46	arkx	Sure.
10:46	ToBeReplaced	augustl: also update-values is deprecated iirc; i think update-or-insert-values is preferred
10:47	augustl	ToBeReplaced: I'm using the old 0.2.3 versoin of clojure.java.jdbc so I'll do the deprecation dance when 0.2.4 is out :)
10:50	augustl	anwer here: https://groups.google.com/d/topic/clojure/W8vkESoIgeU/discussion
10:50	augustl	answer*
10:51	clgv	is there a pr-str version that uses pretty-printing? I want to write a config file with it
10:53	ToBeReplaced	in core.logic, how do you map a constraint across a seq? ex. (all (map constraint seq))
10:54	clgv	ToBeReplaced: something like "everyo"
10:55	ToBeReplaced	clgv: "everyg"... thanks
10:59	arkx	bbloom: eliminated that dependency and bunch of other stuff, still failing. I'll try to extract this to a standalone project.
11:00	arkx	This code used to work before a colleague rebased our topic branch, but adding this namespace is the commit that fails. doseq also works just fine elsewhere as far as I can tell.
11:47	h0bbit	Hi All, Is there any way I can jump to Java code from inside the repl?
11:48	h0bbit	For example, if I wanted to see the java code behind a low level function, how do I do that?
11:48	llasram	h0bbit: I believe ritz provides access to Java sources if you have source JARs on your classpath
11:48	jro_	how do I set an extra entry to classpath, when using leiningen 2?
11:49	h0bbit	llasram, cool. let me look into that. will be back in a bit.
11:49	llasram	jro_: (1) You don't. (2) Still don't. (3) Ok, fine, if you really really need to, add it to :resource-paths
11:50	h0bbit	jro_, You can use :resource-paths for pre-compiled class files and :java-source-paths for java code.
11:50	jro_	I'm just trying to configure log4j for lein run
11:50	h0bbit	jro_, If you just want to add a local JAR to your project, consider using lein localrepo
11:56	llasram	jro_: Oh, you want to add the path containing log4j.properties to your classpath? Ok, then actually :resource-paths is the correct approach :-)
11:58	joegallo	jro_: also, i believe that "resources" is (shockingly!) already included in the resources-path automatically by leiningen, so you can just create that directory and pur log4j.properties into that. (i think.)
11:58	joegallo	s/pur/put/
11:59	jro_	yes, thanks! did not understand the convention
12:00	antares_	jro_: use :resource-paths, take a look at https://github.com/michaelklishin/quartzite if you need an example (it relies on quartz.properties in tests)
12:01	jro_	I was using resources unconsiosly, since (route/resources were routed to resources/public
12:02	technomancy	I wonder if we should have `lein new` create a resources dir so it's more obvious that it's on the classpath by default
12:03	wink	hm
12:03	antares_	technomancy: good idea
12:03	wink	random brainfart: `lein wtf` will show an errata of defined project dirs?
12:04	wink	like.. an annotated explanation what the current state is
12:04	antares_	a task that displays dir layout is also a good idea
12:04	wink	yeah, basically that
12:06	antares_	technomancy: I also think we should change lein new to fail when project name is "clojure"
12:06	wink	blacklist all the things!
12:09	antares_	filed an issue for the task
12:09	wink	./cheer
12:17	TimMc	I actually got to use LEIN_IRONIC_JURE=y recently. :-)
12:18	hyPiRion	TimMc: whoah.
12:18	hyPiRion	swearjure+
12:18	hyPiRion	*?
12:18	clojurebot	* is just for when you are lazy and sloppy
12:22	hcumberdale	lein new new
12:23	hcumberdale	lein new hibernate :)
12:27	TimMc	hyPiRion: Yeah.
12:27	TimMc	I should work on that some more today.
12:29	TimMc	Maybe I should extort Rich into vetting or applying patches. "For each day CLJ-827 isn't merged, I'll spend 1 hour working on Swearjure."
12:29	cheekee	I am trying to find the dependency that runs sine, cosine and log
12:30	TimMc	cheekee: You mean java.lang.Math?
12:31	TimMc	,(Math/sin 3.14)
12:31	clojurebot	0.0015926529164868282
12:31	tgoossens	I'm looking for an example with seesaw that involves forms (buttons espcecially)
12:33	cheekee	TimMc: No I meant the clojure dep that took the place of clojure.contrib
12:34	TimMc	~contrib
12:34	clojurebot	Monolithic clojure.contrib has been split up in favor of smaller, actually-maintained libs. Transition notes here: http://dev.clojure.org/display/design/Where+Did+Clojure.Contrib+Go
12:34	cheekee	or how do I do Sin(pi) in clojure
12:34	cheekee	I know but what lib is Sine in?
12:37	ohpauleez	cheekee: You can use Java's core Math lib
12:37	ohpauleez	Math/sin
12:37	ohpauleez	http://docs.oracle.com/javase/6/docs/api/java/lang/Math.html
12:38	antares_	forgive me, father, for I've Math/sinned
12:38	ohpauleez	ohh nvm, I didn't look at scrollback
12:38	ohpauleez	antares_: haha
12:39	ohpauleez	cheekee: other than that, there's some stuff worth checking in https://github.com/clojure/math.numeric-tower/
12:39	thorwil	i have a file here where i get a NullPointerException at line 9, if i use nrepl-load-current-buffer, but everything works if i paste the code into the repl: https://www.refheap.com/paste/11408 0.o
12:42	tgoossens	a bit stupid perhaps
12:42	tgoossens	but
12:42	tgoossens	in emacs using paredit
12:42	tgoossens	i'm failing to put [x]
12:42	tgoossens	around an existing expresssion x
12:43	tgoossens	(x) is ok
12:43	tgoossens	M-(
12:44	thorwil	tgoossens: select x, hit [ turns x into [x] here
12:44	antares_	tgoossens: works for me. I select x, hit [
12:44	tgoossens	hmm
12:44	cheekee	ohpauleez: It is not in Numeric-tower
12:45	tgoossens	ayhes
12:45	tgoossens	seems to work
12:45	tgoossens	lol
12:45	tgoossens	and now for something completely different (not so)
12:45	ohpauleez	I totally realize that, I think the best bet is to use Math/sin. I was just pointing out numeric-tower for future reference
12:45	tgoossens	(]
12:45	tgoossens	i can't get it away :p
12:46	cheekee	ohpauleez: But thanks I got Math/sin to work
12:46	tgoossens	killing does the trick
12:46	hyPiRion	tgoossens: mark it and do C-w
12:46	tgoossens	djeez i'm so unexperienced :p
13:09	seangrove	I don't know anything about maven, but I'd like to use a package hosted on the cloudbees maven server - how do I set this up with lein2?
13:17	AdamC	Hi, does anyone have any ideas about loading and evaluating code in new classloaders, pulling in dependencies using pomegranate?
13:17	dnolen	ok, just added experimental support for a ^not-native type hint in ClojureScript
13:18	dnolen	in the presence of this type hint not protocol dispatch overhead on non-higher order protocol fn usage.
13:18	dnolen	http://github.com/clojure/clojurescript/commit/bf4c85c1f17c3f2a26ba57fef896350a7651d8cf
13:23	gf3	AtKaaZ, gfredericks: Ack, my logs are gone, did I miss something?
13:29	gf3	Ohp I see
13:36	pocho	Say you have a map within a map within a map and so on, and you want to edit one of the deeply nested maps and return the entire thing.
13:36	pocho	What's the easiest way to do such a thing.
13:36	jeremyheiler	pocho, update-in
13:36	pocho	thanks
13:37	jeremyheiler	,(update-in {:a {:b {:c 1}}} [:a :b :c] inc)
13:37	clojurebot	{:a {:b {:c 2}}}
13:37	mknoszlig	pocho: assoc-in might also be an option, depending on context
13:45	seangrove	Ah, nevermind, I've got it. :repositories key in project.clj and then just refer to the dependency like a normal clojure dep
13:49	cheekee	I have written a program that converts Fahrenheit to Celsius. It works but I am curious as to why N is appended to the output, as in 0N or 100N
13:52	cheekee	(defn F-convert [temp] (*( - temp 32)(/ 5 9)))
13:53	cheekee	why is N appended to the output?
13:53	mknoszlig	cheekee: (class (F-convert 32))
13:56	cheekee	mknoszlig: ok thanks
13:58	mknoszlig	cheekee: (/ 5 9) gives a ratio
13:59	mknoszlig	cheekee: let me rephrase: what return type are you looking for?
14:00	seangrove	I'm not sure how to track this down - just including a reference to ring.adapter.jetty in my (ns ..) form causes: Exception in thread "main" java.lang.VerifyError: class org.eclipse.jetty.http.HttpBuffers$1 overrides final method newBuffer.(I)Lorg/eclipse/jetty/io/Buffer;
14:00	seangrove	Is there some grizzled clojure expert who can tell me what to look for in tracking down this problem?
14:00	seangrove	There's nothing else in the namespace
14:01	mknoszlig	seangrove: what version?
14:02	seangrove	Clojure 1.5.0-beta2, ring-jetty-adapter 1.2.0-beta1
14:02	cheekee	mknoszlig: I solved the problem by using 5.0 instead of 5
14:06	mknoszlig	seangrove: hmm, maybe you want to try a stable combination?
14:07	mknoszlig	cheekee: :)
14:08	pocho	say I have some extra information that is needed by the function I'm calling reduce on, that is the same for all the calls reduce makes
14:08	pocho	how do i pass it down?
14:11	antares_	pocho: closure locals capture should be sufficient?
14:12	abp	pocho: Yea, you could use an #() or fn to wrap the function reduce is calling if it's not already anonymous or use partial
14:14	mknoszlig	seangrove: seems to work for me... can you provide more detail?
14:15	pocho	This functional programming thinking is blowing my mind.
14:16	AtKaaZ	is it necessary to :import any classes that are used for typehints only?
14:17	dnolen	update-in unrolled in ClojureScript, much faster (probably a good idea for Clojure too), apply also now much faster when passing in arg list as vector
14:18	mknoszlig	AtKaaZ: if you write the full name including the package, it should work without :import iirc
14:18	AtKaaZ	mknoszlig: that's what I was thinking but I want to be sure
14:21	mknoszlig	AtKaaZ: my repl confirms.
14:21	AtKaaZ	did you try including random non-imported class?
14:22	AtKaaZ	i mean type-hinting on that
14:22	mknoszlig	AtKaaZ: trying on an imported class wouldn't make a lot of sense, no? :) - but no, it wasn't random
14:23	AtKaaZ	mknoszlig: true but I mean, I can never tell if it's imported already or not by ie. clojure
14:24	ohpauleez	is there a Himera-like service with jailed Clojure? I'm basically looking for lazybot-as-a-service
14:24	mknoszlig	AtKaaZ: https://gist.github.com/mknoszlig/e0c987e0e9e4e96aeaf5
14:25	AtKaaZ	mknoszlig: thanks
14:26	abp	ohpauleez: http://tryclj.com/
14:26	AtKaaZ	so I take it the compiler tries to load any referenced class
14:26	AtKaaZ	if it's not already loaded
14:26	ohpauleez	abp: I want to hit it with RESTful requests
14:26	borkdude	I've collected some links of clojurescript canvas games. If you know some other, send them to me. https://www.evernote.com/shard/s96/sh/27537b24-5584-4738-ab2e-7a5545416ac6/7eabfa9335008b66e308011bf0ecb09b
14:26	AtKaaZ	and import does that + also allow you to not fully qualify
14:27	abp	ohpauleez: Oh, yea just got the as-a-service part
14:27	augustl	I'm writing a stand-alone app that sits between ZeroMQ (my system) and a SOAP API (3rd party). The rest of my system is in Clojure, but perhaps it's not the best fit? I've never really written code against SOAP before, but I guess doing this part of the system in plain old Java is better, with xsd-friendlyness etc. Suggestions? :)
14:28	AtKaaZ	mknoszlig: i guess my only concern is, will the class be loaded automatically if not already loaded, and it would seem that's the case; and import only allows me to not fq
14:28	Bodil	ohpauleez: Well, lazybot is built on Clojail, wrapping it in a web service should be pretty trivial.
14:28	ohpauleez	Bodil: You'd think haha
14:29	mknoszlig	AtKaaZ: i would assume that the compiler just makes sure the class is on the classpath...
14:30	citizenparker	borkdude: it's rather unfinished but you're welcome to add https://github.com/citizenparker/inquizitors to that list if you like
14:31	borkdude	citizenparker cool, have you hosted it somewhere
14:31	AtKaaZ	mknoszlig: makes sense, thanks again
14:32	Bodil	ohpauleez: I did something like it for an interactive slide deck once, if that's any help: https://github.com/bodil/thefutureisclojure/blob/master/src/server.clj
14:32	citizenparker	borkdude: nope, unfortunately. Websocket requirement keeps it off Heroku, never found another free alternative
14:33	ohpauleez	Bodil: ah word, thanks!
14:33	lynaghk	weavejester: ping
14:37	Frozenlock	Any breakthrough for making clojure application accept 'plugins'?
14:37	tgoossens	seesaw is great for gui development. I think i might just create the gui in clojure and then use it as a library in my java project
14:37	augustl	Frozenlock: the security contexts in Java could probably be used
14:39	Frozenlock	augustl: I don't follow...
14:39	borkdude	citizenparker I tried building it with lein2 and lein1 but I get an error on retrieving org.clojure.contrib:prxml:jar:1.3.0-alpha4
14:41	mknoszlig	AtKaaZ: np - if you're interested in the details, it's probably worth to take a look at how import* does it's magic
14:42	AtKaaZ	mknoszlig: it would take me ages to understand that code :)
14:43	jballanc	question: (into {} (map my-func [2 3 4 5])); and (my-func 2) returns a map --> result is only the last element gets inserted...why?
14:43	jballanc	i.e. (into {} (map my-func [2 3 4 5])) == (into {} (map my-func [5]))
14:44	citizenparker	borkdude: Hmm, that's odd. Trying to track down which dep has a requirement for that
14:45	mknoszlig	AtKaaZ: you won't know until you try ;)
14:45	mknoszlig	AtKaaZ: sorry, g2g :/
14:45	AtKaaZ	laterz
14:48	Frozenlock	Bodil: running your presentation. Are the code slides supposed to be interactive? If so... what's the magic button?
14:48	augustl	Frozenlock: not sure what you mean with plugins. But if you mean arbitrary clj code running in a sandbox, there's security stuff for that on the JVM
14:49	AtKaaZ	jballanc: (into {} (map #(do [% %]) [2 3 4 5]))
14:49	AtKaaZ	,(map #(do [% %]) [2 3 4 5])
14:49	clojurebot	([2 2] [3 3] [4 4] [5 5])
14:49	augustl	AtKaaZ: using do inside #() was a nice trick :)
14:50	citizenparker	borkdude: fixed. The aleph version I was using had a stale dependency
14:50	citizenparker	I should eventually switch that out to webbit
14:50	Frozenlock	augustl: Ah I see. No I'm not really checking into that for now. It's really a case of 'how can I make it easy for the user to drop a jar file in the directory and automagically have a new plugin activated'
14:52	Bodil	Frozenlock: Oh, good question... I think it's Alt-R?
14:52	Bodil	Frozenlock: They're very old slides. :)
14:52	Frozenlock	Bodil: That did the trick, thanks :)
14:54	jballanc	AtKaaZ: but this works -- &(into {} '({:a 1 :b 2} {:c 3 :d 4}))
14:55	jballanc	,(into {} '({:a 1 :b 2} {:c 3 :d 4}))
14:55	clojurebot	{:a 1, :b 2, :c 3, :d 4}
14:55	AtKaaZ	jballanc: is myfunc returning something like: {:a 1 :b 2} ?
14:55	AtKaaZ	,(into {} '({:a 1 :b 2} {:a 3 :d 4}))
14:55	clojurebot	{:a 3, :b 2, :d 4}
14:55	jballanc	yeah
14:55	AtKaaZ	that might explain it
14:55	AtKaaZ	using the same key
14:56	AtKaaZ	,(into {} '({:a 1 :a 2} {:a 3 :a 4}))
14:56	clojurebot	#<ExecutionException java.util.concurrent.ExecutionException: java.security.PrivilegedActionException: java.lang.reflect.InvocationTargetException>
14:56	AtKaaZ	,(into {} '({:a 1 :b 2} {:a 3 :b 4}))
14:56	clojurebot	{:a 3, :b 4}
14:56	jballanc	oh gosh darn it...
14:56	jballanc	you're absolutely right
14:56	jballanc	:(
14:57	jballanc	I'm repeating keys
14:57	jballanc	thanks...knew it was something stupid
15:08	mefisto	anyone else at dev nexus?
15:35	pepijndevos	are there any other IRC clients/servers/libs than subrosa and irclj? Thinking about building a bouncer of sorts.
15:38	abp	How do I best organize multiple projects that share the same groupid? Should I keep the directories flat? ie publish as groupId/artifactId but make artifactId-dirs?
15:39	gfredericks	I see an ML question from ejackson from April about bulk import in datomic, and stuarthalloway seemed to say there isn't any such thing at the moment. Does anybody know any up-to-date info on that?
15:39	pepijndevos	abp, seem okay to me.
15:40	Raynes	pepijndevos: I don't know of any.
15:40	dnolen	so it's looking like ObjectMap really doesn't offer much over PersistentArrayMaps - http://jsperf.com/objectmap-vs-persistentarraymap/2
15:40	Raynes	pepijndevos: I think irclj would potentially work for writing a bouncer.
15:40	Raynes	I'm not sure though.
15:40	Raynes	Might need something more low-level.
15:40	pepijndevos	Raynes, what about the server part?
15:41	Raynes	You'd still need to write a server.
15:42	brehaut	im blanking on name of the lib that tells you what you are doing wrong stylistically
15:43	gfredericks	kibit?
15:43	brehaut	yes!
15:43	pepijndevos	Raynes, are commands from the server the same in format as the other way around? I mean, obvisously irclj isn't a server, but it can send stuff right?
15:43	Wild_Cat	quick design question: I'm writing a game where some, but not all, characters' attacks have special effects, represented by different functions. Do I stick these functions in the maps I'm using to represent the characters, or do I define attack as a multimethod?
15:43	Raynes	pepijndevos: Yes, the part of Irclj that parses messages should be general for both a server and client.
15:44	amalloy	brehaut: also eastwood, although i don't think that ever really took off
15:44	brehaut	amalloy: thanks
15:44	pepijndevos	Raynes, cool, i'll look into it more later.
15:45	pepijndevos	dnolen, oh, does that mean you get to throw away code? I love doing that.
15:45	dnolen	pepijndevos: eventually
15:46	pepijndevos	dnolen, but, "56% slower" than what?
15:47	dnolen	pepijndevos: what do you mean?
15:47	yogthos	I've got a question, is there a way for a namespace to expose functions from a different namespace it refers to?
15:48	pepijndevos	dnolen, when I run the test, to the right it says for every test "so-and-so many percent slower/faster"
15:48	brehaut	amalloy: waitaminute, eastwood and kibit are both by the same guy?
15:48	amalloy	are they? i didn't notice
15:48	brehaut	entirely possibly ive stumbled across a fork
15:48	dnolen	pepijndevos: js perf isn't really ideal for this kind of test, it assumes they are all of the same kind
15:49	pepijndevos	ah
15:49	abp	yogthos: Yeah but amalloy is around, so better stop talking about it. ;P
15:49	yogthos	lol
15:49	amalloy	haha
15:49	dnolen	pepijndevos: but you can see that we're comparing ops on ObjectMap & PeristentArrayMap
15:50	pepijndevos	yea, it makes sense if you ignore the relative bits
15:50	amalloy	find a way to do it with juxt, that'll mollify that crazy amalloy
15:50	brehaut	hmm. kibit is complaining about not having a reader function for ordered/map
15:52	abp	yogthos: https://github.com/ztellman/potemkin that's one possibility
15:53	yogthos	abp: ah yes I've seen potemkin before, it does some serious black magic :P
16:01	amalloy	yogthos: you have black goals, so...
16:01	dnolen	pepijndevos: the take away is that with an optimized PAM, OM seems a lot less necessary.
16:01	yogthos	amalloy: haha mayhaps :P
16:03	adu	PAM? OM?
16:04	yogthos	mainly what I was thinking is if you have a lot of different libraries you're using, such is with web apps, it gets a pain to do all the imports every time
16:04	dnolen	PAM=PersistentArrayMap, OM=ObjectMap
16:04	yogthos	it seems like it would make sense to make something you can refer to once that would expose all the useful bits
16:05	bbloom	dnolen: running those benchmarks now. if we can get rid of OM, that would be huge & make the Keyword type much easier :-)
16:06	dnolen	bbloom: yeah, it seems to there's not really an interesting difference now between OM & PAM on all the major browsers
16:07	dnolen	bbloom: PAM is faster on V8 than OM, and only slightly slower on the other browsers than OM
16:07	bbloom	dnolen: can you gist the benchmark source? i wanna verify
16:07	dnolen	bbloom: http://github.com/swannodette/cljs-perf
16:07	bbloom	dnolen: sounds good!
16:07	gfredericks	,(with-redefs [first second] (first [1 2 3 4]))
16:07	clojurebot	#<ExecutionException java.util.concurrent.ExecutionException: java.security.PrivilegedActionException: java.lang.reflect.InvocationTargetException>
16:08	bbloom	dnolen: ok cool, with array-map you're always looking up the last entry
16:08	dnolen	bbloom: yep
16:09	bbloom	dnolen: i vote to nuke ObjectMap from orbit :-)
16:09	dnolen	bbloom: hehe, I'd like to do a little more testing and post the results on the clojure-dev ML
16:09	dnolen	first
16:09	bbloom	i see you set the threshold to 8, what is the threshold in clojure proper? how did you arrive at 8?
16:10	dnolen	bbloom: 8
16:10	dnolen	same threshold as Clojure
16:11	bbloom	any chance we can plot performance for thresholds from 4 to 32 or so
16:11	dnolen	bbloom: I don't really see the point, after 8 the cost of copying becoming quite large
16:11	dnolen	OM & PAM are only about small maps
16:12	dnolen	OM is hack to get JS Obj perf, and PAMs now demonstrate it's not a big win.
16:12	bbloom	dnolen: i'm just curious what "small" means considering a lot of file systems and the like use absurdly large branch factors
16:12	dnolen	small is 2-4 keys, which is very common
16:13	bbloom	small defined by what metric? common usage or by efficiency? vectors use a array of what? 30 entries? where did that value come from? seems like we need to measure
16:13	bbloom	we might find that PAM out performs PHM until 30 or so
16:13	bbloom	don't know unless we try
16:13	dnolen	32, numbers comes from cache size
16:13	dnolen	bbloom: we have tried
16:13	dnolen	bbloom: like a year ago
16:14	bbloom	in clojurescript?
16:14	dnolen	yes
16:14	bbloom	or just clojure?
16:14	bbloom	but what about now with the improvements to PAM?
16:15	dnolen	bbloom: it's going to be a tradeoff between update/lookup
16:15	bbloom	of course
16:15	dnolen	bbloom: I agree it would be nice to have more information about precisely what that tradeoff is
16:15	bbloom	dnolen: i'll give it a shot over here, you mail the list :-)
16:17	dnolen	bbloom: cool, I think the new ^not-native type-hint is pretty useful
16:17	dnolen	(unrelated to PAM/OM of course)
16:17	bbloom	dnolen: i saw that, but didn't think too hard about it yet
16:18	dnolen	bbloom: it just eliminates protocol dispatch overhead
16:18	bbloom	dnolen: makes sense
16:41	TheComrade	Hola! I'm looking for recommendations for screencasts of Clojure used with Emacs, beginner or advanced.
16:54	andres-v	TheComrade: ¡Hola! Are you familiar with Emacs? (This is an old one: http://vimeo.com/8356990) I think a lot of people use nrepl now: https://github.com/kingtim/nrepl.el) but maybe it will help you to get a feeling about Clojure+Emacs
16:55	andres-v	TheComrade: http://vimeo.com/9770382 (2010), and some other Clojure video links here: http://learn-clojure.com/clojure_videos.html (I am sure there's more... somewhere :-) )
17:16	craigbro	having a brainfart
17:16	craigbro	I am trying to add a custom encoder to cheshre for byte arrays
17:16	craigbro	and can't figure out how to represent the [B class in clojure
17:16	craigbro	hmmm
17:17	craigbro	but since add-encoder uses (extend...
17:17	craigbro	is it even possibly?
17:17	brehaut	yes
17:17	craigbro	possible I mean
17:17	brehaut	just a moment
17:17	brehaut	,(Class/forName "[B")
17:17	clojurebot	[B
17:18	brehaut	craigbro: ^ extend accepts that as its first argument
17:21	craigbro	hmm, still no dice at the cheshire level
17:22	craigbro	ah, method sig issue on my part
17:24	tcrawley	hugod: here you go: https://github.com/pallet/ritz/pull/77
17:24	tcrawley	thanks!
17:25	hugod	tcrawley: thank you for sorting it out
17:25	tcrawley	hugod: heh, it's the least I can do, since I caused it :)
17:27	hugod	tcrawley: that sort of issue is all to easy to hit - is pomegranate using the newer dynapath?
17:28	tcrawley	hugod: pomegranate isn't yet using dynapath, the PR is still pending. but when it is merged, it will use 0.2.1
17:33	craigbro	hmm
17:33	craigbro	can't seem to get cheshire to handle byte arrays
17:35	craigbro	sure it's a user error
17:37	hugod	anybody successfully using dir-locals.el for customising nrepl.el nrepl-history-file?
17:38	seangrove	Hrm, how can I generate a jar file for lein2? I need it apparently to use it with Jenkins
17:39	seangrove	Ah, nevermind, I see it downloads itself
17:40	Frozenlock	Raynes: When you change your picture when I'm looking at one of your repo, I feel observed.
17:40	Raynes	Haha
17:41	Raynes	Frozenlock: Especially when I change it to one this creepy.
17:41	Raynes	I wish I had captioned it with "I see you looking at my repos, boy."
18:00	callenbot	Raynes: I'm going to need a cigarette after having your github profile image look at me like that.
18:00	Raynes	lol
18:02	cemerick	tcrawley\|away: damn, sorry. :-( I'll try to get that in this week. Bother me incessantly on all channels if I continue to drop the ball
18:02	Foxboron	hey, cemerick i think i might have found a fault in Clojure Programming, on page 190. (i did tweet at you also)
18:05	tgoossens	i'm going to give it a go. Just because I can. I've learned working with emacs for clojure, but wan't to try out java development with it
18:05	tgoossens	any tips on useful plugins?
18:10	Bodil	tgoossens: No, and if it turns out there are some, I'd very much like to hear about them. I've tried in vain so many times to make Emacs an acceptable Java editor...
18:10	tgoossens	i heard it is not ideal. But i just want to try it
18:10	tgoossens	and someone here in the irc spoke about a plugin that somehow uses eclipse
18:10	Foxboron	tgoossens: didnt ljos mention a plugin?
18:10	tgoossens	but for the love of god, i cannot remember the name of the project
18:11	Bodil	Oh, Eclim. Yes, tried that. Horrible experience.
18:11	tgoossens	eclim
18:11	tgoossens	that was it!
18:11	tgoossens	still not sure what it is exactly
18:13	Bodil	tgoossens: The closest I got to a working environment was with malabar-mode. But it's basically unfinished and not seeing any development.
18:13	Bodil	tgoossens: Though apparently CEDET is coming along on the Java front. Last time I tried it it was a mess, but it might have gotten better by now.
18:14	tgoossens	lol
18:14	tgoossens	cedet even has UML diagrams o.O
18:14	Bodil	...yeah...
18:15	tgoossens	bodil: I didn't say it was really useful :p
18:15	tgoossens	its just.. uml in terminal
18:15	tgoossens	its a bit fancy :p
18:16	Bodil	Well, at least it proves Emacs can do anything... though one hopes it was intended as irony or something.
18:16	tgoossens	haha
18:16	tgoossens	malabar mode seems pretty extensive to me
18:17	Bodil	Malabar was really nice, except it just kept crashing and crashing.
18:17	tgoossens	hmm
18:17	tgoossens	how long ago?
18:18	Bodil	About two years. Doesn't look like there's been any serious commits to it since, sadly...
18:19	tgoossens	bah
18:19	tgoossens	i'll give it a try nevertheless
18:19	tgoossens	i'm obligated to work on a project in java for a few months. and i just learned emacs (which i'm starting to like)
18:19	tgoossens	so I'm trying to combine it :p
18:19	tgoossens	like many other before my i guess
18:20	Bodil	I know that exact feeling, yes. :)
18:20	Bodil	I'd say CEDET is your best bet. Just too bad it's such a giant project.
18:20	tgoossens	also
18:21	tgoossens	I have not really a clojure project running (though this project would be perfectly suitable for clojure, my teammates don't agree with me :))
18:21	tgoossens	all i'm doing is small experiments most of the time
18:22	hyPiRion	tgoossens: You could try out JDEE, as it depends upon CEDET.
18:22	tgoossens	hmm
18:23	hyPiRion	Though I've not tried either, but will do so in the (hopefully (?) distant) future.
18:23	Bodil	hyPiRion: Yeah, that's what I had in mind. It's a part of CEDET proper, iirc.
18:24	hyPiRion	Bodil: Oh, I thought they were separate projects, but JDEE depending heavily on CEDET.
18:25	Bodil	hyPiRion: I got the impression it was moved into CEDET. But with the size of that thing it's hard to tell. :)
18:26	callenbot	Bodil: there are better options, like using that daemon that harnesses IntelliJ or something and exposes an API to vim and Emacs.
18:26	callenbot	I've seen people use such things for scala.
18:26	Bodil	callenbot: You mean Eclim? That didn't really work out for me - especially since I still had to use Eclipse to manage projects etc.
18:29	craigbro	oi
18:29	tgoossens	bodil: i'm going to try it out, but apparently you can run a eclim session WITHIN eclipse
18:30	Bodil	tgoossens: Yeah, you can. I guess it's at least better than having to use Eclipse all the time. :)
18:31	tgoossens	Bodil: I remember the time I was trying to use eclipse for everything: python, eclipse, java, c++, javascript, php
18:31	tgoossens	and it worked
18:31	tgoossens	that's true
18:32	Bodil	Yeah, I used Eclipse for everything too... I feel much better now after switching to Emacs, I'm happy to report. :)
18:32	tgoossens	it seems that it is a vimplugin
18:33	tgoossens	i've been using emacs for over a week now
18:33	gf3	sjl: Have you considered (in Badwolf) changing the cursor color to reflect the current mode (much like you do with the status bar)?
18:33	Bodil	tgoossens: You want https://github.com/senny/emacs-eclim
18:37	pocho	Hey guys, I need help figuring out how to express something that's probably in clojure.core
18:37	pocho	http://pastebin.com/raw.php?i=ian8f6hZ
18:38	pocho	Im not used to all this functional business
18:41	callenbot	Bodil: nothing of the sort is ideal, generally. I avoid that stuff when I can.
18:42	Raynes	Bodil: You should have called catnip katniss.
18:43	Bodil	Raynes: As if enough people don't already make that connection and assume I'm a Hunger Games fangirl? :)
18:44	Raynes	You aren't? :(
18:45	Bodil	I don't know, I guess there's a chance I might become one if I actually read the books some day. :)
18:45	Raynes	The movie is pretty good too.
18:46	Bodil	Yeah, it wasn't horrible. I think I'm sticking to my MLP fandom, though. :)
18:46	Raynes	Haha.
18:47	seangrove	What's likely the problem if ring never responds to a request?
18:47	seangrove	The browser is just hanging waiting for a response
18:47	hiredman	seangrove: if your handler never returns
18:47	hyPiRion	does ring print out anything in the console
18:48	hyPiRion	?
18:48	seangrove	https://www.refheap.com/paste/11435
18:48	hiredman	aleph's ring adapter used to do that, and swallow the exception
18:48	hiredman	which ring adapter are you using?
18:48	seangrove	I'm starting it with `lein ring server`
18:48	seangrove	hyPiRion: Nothing comes out after "2013-02-18 15:47:14.324:INFO:oejs.AbstractConnector:Started SelectChannelConnector@0.0.0.0:3000"
18:49	hiredman	seangrove: when happens when you hit it with curl?
18:49	seangrove	Hangs
18:49	seangrove	https://www.refheap.com/paste/11436
18:50	seangrove	Let me see if I can start it from the repl...
18:51	jballanc	anyone have a favorite Ring logging middleware?
18:52	seangrove	Hrm, same problem from the repl
18:53	seangrove	Ah, it might be because of com.saucelabs/sauce-connect
18:58	bloop	I'm using counter clockwise for Eclipse and playing around with namespaces. I wrote (ns clojure.set) and then def'd a few things. Now even if I totally clear the file and run it again, there are still these extra things in clojure.set. Am I not understanding how definitions work or how "running a program" works or what? It seems like clojure.set should be blank at the start regardless of what I've run in the past...
18:59	bloop	well not blank but also not having the things I def'd
19:00	bloop	I guess I can get a brand new REPL by running the program with the lpay button at the top, never mind
19:01	Raynes	Bodil: You asked what my favorite pony is… https://dl.dropbox.com/u/23745600/bodilshy.jpg
19:02	Bodil	Raynes: What? Not Bodil Dash? :)
19:06	craigbro	VICTORY!
19:06	craigbro	8^)
19:06	Frozenlock	You 6 pooled?
19:58	lynaghk	octagon: todoFRP pull request please!
20:06	octagon	lynaghk: my pleasure!
20:09	zerokarmaleft	hiredman: trying to fire up clojurebot for a private irc channel, seems i've misconfigured the security policy somewhere https://www.refheap.com/paste/11439
20:10	zerokarmaleft	doesn't it use the default permissive example policy if you don't specify one as a parameter?
20:18	tcrawley	cemerick: heh, no worries. I may update the bug-you frequency to monthly though :)
20:19	cemerick	tcrawley: I have the issue open in a browser tab, so it won't be long now ;-)
20:21	hiredman	zerokarmaleft: my guess is you don't have a clojure.jar setup for it
20:21	hiredman	zerokarmaleft: https://github.com/hiredman/clojurebot/blob/master/clojurebot-eval/resources/config.clj is the default config
20:22	hiredman	zerokarmaleft: it uses https://github.com/sonian/carica for configuration so you can override the default with a config file on the classpath
20:22	hiredman	or just use the default
20:22	zerokarmaleft	hiredman: ah ok...thanks
20:23	hiredman	but it is hard to tell without the whole stacktrace
20:25	ppppaul	i'm trying to do something interesting with compojure routes. but running into a bit of trouble https://gist.github.com/boxxxie/4982312
20:25	ppppaul	i want to have a context that matches a plural
20:25	zerokarmaleft	hiredman: fixed the clojure.jar config, progressed to a RT security exception: https://www.refheap.com/paste/11440
20:28	hiredman	zerokarmaleft: how you deploying clojurebot-eval?
20:28	hiredman	if you are doing it inside some kind of container it might set its own policy or something
20:28	zerokarmaleft	java -Djava.security.manager -Djava.security.policy="file:///Users/zerokarmaleft/Projects/clojurebot/resources/example.policy" -Xmx100m -jar target/clojurebot-eval-1.1.0-SNAPSHOT-standalone.jar
20:29	hiredman	try without the -Djava.security.policy=...
20:30	hiredman	t should just load the example.policy from the jar
20:31	zerokarmaleft	disco!
20:32	zerokarmaleft	thanks for the help :D
20:32	hiredman	sure, good luck running clojurebot
20:54	TimMc	Well, that's unfortunate:
20:54	TimMc	java -Dclojure.read.eval=unknown -jar ~/.m2/repository/org/clojure/clojure/1.5.0-beta11/clojure-1.5.0-beta11.jar -e "(+ 1 2)"
20:54	TimMc	Exception in thread "main" java.lang.RuntimeException: Reading disallowed - read-eval bound to :unknown
20:54	TELawrence	TimMc, hi
20:54	TELawrence	I'm the beloved mascott of this channel.
20:54	gfredericks	TimMc: why beta11?
20:54	TELawrence	Loved by all, My Shadow is Worshipped
20:54	TimMc	Oh, is that old?
20:54	gfredericks	RC-16 is last I heard
20:55	warz	not sure if there's a ring-specific channel, but im trying to figure out how to use multiple middleware in the correct order. i just want to read a key out of the :params map in one of my middleware functions. the params map is not there in the middleware function though, but eventually during the route handler the params map is in the request. so i think i'm applying the middleware functions
20:55	warz	in the wrong order, or something.
20:56	warz	and i don't think i can put the main `handler/api` at the end
20:56	TimMc	gfredericks: Well, still fails.
20:56	warz	my code is here, if anybody knows why this might be the case: https://github.com/ryancole/localshop/blob/master/src/localshop/handler.clj
20:57	gfredericks	TimMc: hmm...so this is an issue with the command line evaller?
20:57	TimMc	Yeah.
20:57	TimMc	I'll post to the ML.
20:57	warz	xeqi suggested rearranging them, earlier today, and i messed around with that but i think i have to have the `handler/api` portion first?
20:58	gfredericks	warz: well if you put the whole (handler/api app) part lower down that would definitely fail
20:58	gfredericks	s/app/app-routes)
20:58	gfredericks	s/)//
20:58	warz	yea thats what i tried, but then the middlewares arent passed the handler
20:58	gfredericks	pull app-routes out and put it at the top
20:59	gfredericks	(def app (-> app-routes (handler/api) ...))
20:59	gfredericks	then you'll be free to rearrange them
21:00	yedi	how can i do session handling with compojure?
21:00	ravster	hello all
21:00	gfredericks	yedi: there are libs for it; I think sandbar is one but I haven't kept up
21:00	warz	gfredericks, ah ok that does the trick.
21:01	gfredericks	warz: sweets
21:03	warz	what order do those middleware functions work, with the main handler being at the end of that? is it like in order of first to last?
21:03	warz	im confused as to why the main handler being last gives the params to the ones before it
21:03	gfredericks	the last middleware is the outermost
21:03	gfredericks	do you know how -> works?
21:04	warz	not entirely. i know what it does but not how it does it
21:04	gfredericks	it's all syntax
21:04	warz	i knew it passed that first item through the remaining functions
21:04	gfredericks	(-> app-routes (a) (b) (c)) is just (c (b (a app-routes)))
21:04	warz	ah ok
21:05	gfredericks	that combined with the way middlewares work (function wrappers) gives you the behavior you see
21:08	TimMc	gfredericks: All it took to uncover that bug was adding :jvm-opts ["-Dclojure.read.eval=unknown"] to a lein project.
21:08	gfredericks	o_O
21:08	TimMc	(A lein project with RC16 as a dep, mind you.)
21:09	gfredericks	I wonder how it was tested...
21:09	TimMc	*whether
21:10	gfredericks	I swear abedra was tweeting about having fun figuring out where read was used by setting it to unknown
21:10	TimMc	Yeah, so how did that work? :-/
21:11	TimMc	Well, maybe abedra didn't use the lein repl task?
21:12	TimMc	...no, other tasks fail as well.
21:14	gfredericks	I don't suppose unknown wasn't meant to be used with the system property?
21:14	TimMc	No, it is.
21:17	gfredericks	I imagine clojure ought to be setting it to true, eh?
21:17	Fatalnix	is there any official clean documentation on annotations (maybe I missed it? ) because the software I am trying to integrate with uses them to interface my classes.
21:17	TimMc	Yeah, since it just turns around and evals it.
21:18	Fatalnix	found a few things here and there but they looked old and dirty
21:20	TimMc	Fatalnix: Looks like you just list them in the metadata: https://gist.github.com/richhickey/377213
21:21	Fatalnix	hmm, that's what I just found, and these are the same annotations java uses?
21:25	TimMc	Yep, JVM annotations.
21:26	Fatalnix	cool
21:31	dnolen	bbloom: ping
21:31	bbloom	dnolen: pong
21:32	dnolen	bbloom: so it looks the do block change http://dev.clojure.org/jira/secure/attachment/11760/CLJS-441-v001.patch
21:32	dnolen	broke type inference
21:32	dnolen	bbloom: we used to rely on :ret to determine the type of a let expression
21:32	bbloom	dnolen: bah. i can't win, can i? :-P
21:32	dnolen	was looking through the output and was suprised to see cljs.core._truth on critical paths
21:33	dnolen	compilers are hard
21:33	dnolen	bbloom: what was the rationale for removing :ret?
21:34	bbloom	dnolen: it would be nice to have a pretty-printted bit of compiler output checked in so that we can visually diff to catch these sorts of errors earlier
21:34	bbloom	dnolen: let me look/think/recall
21:34	dnolen	definitely - we sould have a compiler.test namespace
21:34	dnolen	should
21:35	bbloom	dnolen: ok, the reason :ret was removed was because it relied on non-do forms understanding statements
21:36	bbloom	dnolen: basically, type inference can happen more generally, so we really shouldn't check :ret, we should check :tag or whatever generally... only analyzing 'do should look at :ret b/c it knows about that and :statements
21:36	bbloom	just an oversight on my part, should be pretty easy to get :let, :letfn, :try, etc to look at their body node for :ret and infer the type
21:37	yedi	i'm getting a dependency error when running lein ring server for libs that i don't even include in my project.clj, is this expected?
21:37	yedi	specifically it says hiccup can't be found and i'm not even using hiccup
21:37	yedi	this only started happening when i added sandbar to the project
21:38	bbloom	dnolen: RE: compiler.test namespace. i think the easiest thing is just to just check in some pretty printed code. maybe core.test
21:39	bbloom	dnolen: gold file tests are great for things that may change and need a human to inspect to confirm/accept
21:40	dnolen`	bbloom: sorry spotty internet
21:40	dnolen`	bbloom: did I miss something you said?
21:40	bbloom	https://gist.github.com/brandonbloom/4982655
21:40	bbloom	dnolen`: ^
21:41	bbloom	dnolen`: i was doing that a little bit with the twitterbuzz thing: recompiling and diffing
21:41	bbloom	particularly helpful for validating changes to optimization applicability in realistic code
21:41	dnolen`	bbloom: I don't see why type inference needs to hard coded into the analyzer
21:42	bbloom	dnolen`: wasn't it before?
21:42	dnolen`	bbloom: no type inference happens in the compiler
21:42	bbloom	dnolen`: inference happens during emission? that seems odd
21:42	bbloom	isn't it also applicable to other backends?
21:43	dnolen`	bbloom: that's possible though at the moment the boolean inference is really only relevant to JS
21:43	bbloom	dnolen`: so look at the :infer-tag function
21:43	bbloom	dnolen`: my oversight was not adding cases there
21:44	bbloom	dnolen`: basically :let should look at infer-tag of :body, not :ret
21:44	dnolen`	bbloom: what cases?
21:44	bbloom	similar for :try, :letfn
21:44	dnolen`	oh ok
21:44	bbloom	but in reality, just :let will get back what i broke
21:44	bbloom	dnolen`: quick fix
21:44	bbloom	want a patch?
21:45	bbloom	probably quicker for you to just try it
21:45	dnolen`	bbloom: so just switch :ret -> :body?
21:45	bbloom	dnolen`: actually, it's :expr
21:45	bbloom	not :body
21:45	bbloom	that should do the trick
21:47	Fatalnix	So I think I'm doing this right.. having something like, @Initialize and then public void initialize() {} in Java is the same as the folloowing in clojure?: (defn initialize [] (with-meta (:Initialize))) ?
21:47	Fatalnix	following*
21:47	dnolen`	bbloom: hmm doesn't work
21:48	gfredericks	Fatalnix: I've never done annotations in clojure and I'm almost certain that's wrong
21:48	Fatalnix	it feels wrong haha
21:48	bbloom	dnolen`: hmm let me think
21:48	Fatalnix	defn wouldn't let me do defn ^{ blah }
21:49	amalloy	you cannot set annotations except via your gen-class clause
21:49	amalloy	other than that, i don't know the details, but gfredericks is right that any fiddling you're doing with defn is nonsense
21:51	bbloom	dnolen`: still thinking, but you can probably add inference cases for meta, letfn, and try* as well: https://gist.github.com/brandonbloom/4982699
21:52	dnolen`	bbloom: sure, I just want to solve the immediate problem tho
21:52	bbloom	dnolen`: of course, i'm looking
21:52	Fatalnix	hmm.. See, I'm trying to test something to see if it's possible, and if this were done in Java, it would look prety much like this: http://nopaste.info/65a0d49be3.html - Trying to see if I can do this without using a java wrapper. But if it's not pssible, it's not a big deal.
21:53	bbloom	dnolen`: oh, duh, need to add a :do case
21:53	bbloom	dnolen`: :do (infer-tag (:ret e))
21:54	bbloom	dnolen`: right?
21:54	dnolen`	bbloom: trying
21:56	bbloom	dnolen`: updated gist with all the cases including :do https://gist.github.com/brandonbloom/4982699
21:58	dnolen`	bbloom: yeah still not working with :do case looking at :ret
21:58	bbloom	dnolen`: damn :-/
21:59	Sgeo	brainproxy, you here?
21:59	bbloom	dnolen`: you've got both the :let and the :do, right?
21:59	dnolen`	bbloom: yeah
21:59	brainproxy	Sgeo: i am
21:59	clojurebot	transients is not mutable data structures: http://technomancy.us/132 or at least as far as you're concerned.
22:00	bbloom	dnolen`: ok let me investigate myself
22:00	dnolen`	bbloom: I'm testing with this
22:00	dnolen`	bbloom: (ana/analyze '{:ns {:name cljs.user}} '(and true false))
22:00	Sgeo	brainproxy, so a "monadic value" in the reader monad is just a function waiting for an argument
22:00	dnolen`	inferring (if true false false), (do true false true), true all work
22:00	Sgeo	So (fn [n] (+ n 1)) could be considered a monadic value
22:00	dnolen`	and (let [] true)
22:01	dnolen`	but '(and true false) does not
22:01	Sgeo	Running it is just passing a value to the function
22:01	Sgeo	This function can be considered to have a globally readable value
22:02	dnolen`	bbloom: (c/infer-tag (:ret (:expr (ana/analyze '{:ns {:name cljs.user}} '(and true false))))) returns nil
22:02	Sgeo	So while you're in the reader monad, there's a value that you can read from at any time
22:02	Sgeo	(Well, only in the same way as doing things in other monads)
22:02	Sgeo	You're still building up a function that is waiting for an argument
22:02	brainproxy	Sgeo: what do you mean by considered to have a globally readable value
22:03	bbloom	dnolen`: yeah, i just evaluated exactly that. i need a minute to explore
22:03	brainproxy	oh i see
22:03	Sgeo	return (I forget what it's called in the common Clojure libraries) just gives a function that ignores its argument and returns the value
22:04	Sgeo	(defn m-result [v] (fn [x] v))
22:04	brainproxy	ah
22:04	Sgeo	Because the argument is the value that you can read
22:05	Sgeo	Let's look at bind
22:06	Sgeo	(defn bind [mv f] (fn [r] (f (mv r))))
22:06	Sgeo	I think
22:07	Sgeo	Wait, no
22:07	Sgeo	(defn bind [mv f] (f (mv r)))
22:07	Sgeo	Wait, that makes no sense either
22:07	brainproxy	right, bind needs to return a monadic value of the same type
22:08	brainproxy	that is, a reader monad value
22:08	bbloom	dnolen`: i figured out wh6y
22:08	bbloom	dnolen`: that's generating an 'if with a nil else
22:08	bbloom	the :constant case boolean has a nil case with no tag type
22:09	bbloom	then-tag is 'boolean, but else-tag is nil
22:09	dnolen`	bbloom: yeah I just now saw that too - hmm, weird this worked before
22:09	Sgeo	(defn bind [mv f] (fn [r] ((f (mv r)) r)))
22:09	Sgeo	That should do the trick I think
22:09	bbloom	dnolen`: so i definitely broke it, but i think something else ALSO broke :-P
22:09	brainproxy	Sgeo: I bet I could work backwards from the laws, and knowing what bind return looks like, to come up with bind
22:10	Sgeo	Go ahead :)
22:10	Sgeo	Or I could try to explain what I wrote
22:10	brainproxy	well maybe the one you gave is correct, studying it
22:11	Sgeo	Basically: Bind is returning a monadic value: A function. So first, our function takes its argument and passes it to mv, to get a result. It then passes that to f, to get another monadic value (a function). Since we are already inside the monadic value we want to create, we need to run this function with the r that we have.
22:12	Sgeo	I just looked at a definition in Haskell, looks like I got it write
22:12	Sgeo	h >>= f = \w -> f (h w) w
22:16	dnolen`	bbloom: actually I'm mistaken, (and true false) is not a good example
22:16	dnolen`	(and (true? true) (false? false)) is better
22:16	brainproxy	Sgeo: makes sense to me; what I need to do next is try and write a protocol-monad that has these characteristics, write tests for it, and play with it a bit in the context of the do macro
22:16	dnolen`	bbloom: I don't think we can actually infer (and true false) at the moment
22:17	Sgeo	brainproxy, want an example in Haskell's do notation?
22:17	brainproxy	Sgeo: sure!
22:18	bbloom	dnolen`: seems like the same problem occurs: the :else form is a symbol because of the 'and macro introducing a 'let
22:18	Sgeo	http://codepad.org/ddrHSU7u
22:18	bbloom	dnolen`: let needs to copy the tag over for each binding
22:18	Sgeo	Note that do notation in Haskell works different from the do macros in Clojure libraries
22:19	Sgeo	Which is why there's an explicit return at the end
22:19	brainproxy	right
22:19	dnolen`	bbloom: yes what I'm saying is (and true false) is a bad example
22:19	bbloom	dnolen`: but i think the same problem affects that new form you showed me
22:19	dnolen`	I only made inference work for the fn cases and hinted symbols
22:20	dnolen`	bbloom: no because there we have a tag for the expression
22:20	Sgeo	brainproxy, in Haskell (2) is the same as (\x -> x 2), which in Clojure terms is #(* %1 2)
22:20	dnolen`	bbloom: or at least we used to
22:20	dnolen`	bbloom: oh hrm
22:20	Sgeo	So, when you pass an argument to addStuff, a will take on the value of 2 times the argument, and b will take on the value of 10 plus the argument
22:20	dnolen`	bbloom: ok you're right, we've lost a tag from the let
22:20	brainproxy	Sgeo: although I bet I could use a dynamic binding so that inside a p-m do macro, you would use m/return explicitly and it would be bound to the correct return
22:21	Sgeo	Imagine if instead of (*2), I used id (the identity function)
22:21	Sgeo	Then a would take the value of the argument to addStuff
22:21	bbloom	dnolen`: yeah, no tag on this: (-> (ana/analyze '{:ns {:name cljs.user}} '(and (true? true) (false? false))) :bindings (get 0) :init)
22:22	Sgeo	So I can effectively ask for the argument of the whole, that is, the value of this readable thing, as an action within the monad
22:22	bbloom	dnolen`: er no i'm wrong
22:22	Sgeo	It is the primary action that I can do in the reader monad.
22:22	bbloom	(-> (ana/analyze '{:ns {:name cljs.user}} '(and (true? true) (false? false))) :bindings (get 0) :tag) ;; boolean
22:22	dnolen`	bbloom: ok that's what I get too
22:23	brainproxy	Sgeo: so, just to make sure I understand, you've essentially built a function that takes one argument, addStuff
22:23	brainproxy	and its implementation is per the do notation
22:23	Sgeo	Yes.
22:23	Sgeo	And (*2) is a function that takes one argument, as is (+10)
22:24	bbloom	dnolen`: we need a case for :var
22:24	bbloom	dnolen`: although the base get-tag case should handle that
22:25	brainproxy	Sgeo: okay, I think I got it!
22:25	Sgeo	brainproxy, yay!
22:28	bbloom	dnolen`: yeah, i think this works for me with the :do and :let changes i proposed
22:29	dnolen`	bbloom: so add a :var case?
22:29	bbloom	dnolen`: no, no var case
22:29	dnolen`	bbloom: oh, you think works, ok lemme check compilation of core
22:29	dnolen`	think this works I mean
22:31	bbloom	dnolen`: i just tested the :try* in my gist, that won't work because of the fact that it re-throws if no exception types match
22:32	bbloom	dnolen`: and meta doesn't matter because booleans can't have meta data... but letfn does work
22:32	bbloom	dnolen`: use this: https://gist.github.com/brandonbloom/4982699 it seems to work for me
22:33	bbloom	dnolen`: the oversight on my part was simply missing that one :ret case
22:34	amro	hm, suddenly I can't use backspace/arrowkeys etc in cljs repl
22:34	amro	I get ^H etc instead
22:35	dnolen`	bbloom: awesome seems to work!
22:35	dnolen`	bbloom: really it's not the introduction of truth that is killer but the generation of anonymous functions because of complex tests to an if in the presence of the truth test
22:37	Raynes	You're all good peoples.
22:37	bbloom	dnolen`: i see....
22:37	bbloom	dnolen`: type systems: turns out they are sometimes useful. heh
22:37	dnolen`	bbloom: awesome, more perf boosts around array-maps on other JS engines because of this chnage
22:39	bbloom	dnolen`: cool
22:39	bbloom	sorry i missed that the first time!
22:40	bbloom	dnolen`: we should definitely do a gold file test suite
22:40	dnolen`	bbloom: yes, the next on my list of todos, testing the output of the compiler
22:40	dnolen`	and adding the basic inference cases
22:41	bbloom	dnolen`: i think gold files are faster/easier/better than unit tests here
22:41	dnolen`	bbloom: oh, not familiar w/ gold files
22:42	bbloom	dnolen`: i think the term might be a Microsoft-ism
22:42	bbloom	dnolen`: essentially, we just check in the simple/pretty-printed compiled test code
22:43	bbloom	dnolen`: so whenever we make a change, if it changes the output, you can skim the diff and see how it changes
22:43	bbloom	dnolen`: it's not automated like a regular unit test, but they are far more comprehensive
22:43	bbloom	and `git add` is basically all you need to do when you say "oh yeah, ok this looks fine"
22:44	dnolen`	bbloom: hmm, interesting idea, probably worth running by the dev ML
22:45	dnolen`	bbloom: I like the idea of it
22:45	bbloom	dnolen`: at minimum, we can create an external repo for it
22:46	bbloom	it won't be 100% integrated into your work flow that way, but it will give us a way to track it anyway & if it's useful, we can fold it in to the main source tree
22:46	dnolen`	bbloom: I'm actually not against - it's a good way to sanity check compiler work
22:46	dnolen`	bbloom: just would like to see what others think
22:47	dnolen`	in particular it would have caught this inference regresion
22:47	dnolen`	but I think moving forward there will be more things like this
22:47	dnolen`	and it nice to know exactly when critical compiler changes happened
22:47	bbloom	dnolen`: the xbox compiler guys swore by their gold files for debugging optimization tweaks
22:48	bbloom	dnolen`: particularly when you have crazy vectorized powerpc isntructions
22:48	bbloom	heh
22:48	dnolen`	bbloom: I can imagine
22:48	dnolen`	bbloom: thx for the help & fix, done for now
22:49	bbloom	dnolen`: anytime