#clojure – 2015-05-13

2015-05-13

00:49	hiredman	huh, clojure 1.7 breaks my favorite trick for clojure scripting
00:49	puredanger	which is?
00:50	hiredman	https://gist.github.com/hiredman/05befd5b39eef89b86ca#file-bench-clj-L3-L20
00:50	hiredman	I'll have to fiddle with it, I am sure there is something that'll work just as well
00:52	puredanger	what's broken?
00:54	hiredman	not that script, but another I have locally throws an exception with 1.7 there, not with 1.6
00:55	puredanger	the classloader name lookup stuff now routes more universally through the DCL if it exists
00:55	hiredman	https://gist.githubusercontent.com/anonymous/08f83e037ffe5ff506f6/raw/d3f7a300e593ceedde4463f4174aea62fb6b751b/gistfile1.txt
00:55	hiredman	huh
00:56	puredanger	http://dev.clojure.org/jira/browse/CLJ-979
00:56	hiredman	maybe I should update the pomegranate uberjar I use
00:57	puredanger	which version of 1.7 are you using? there was a regression like this in the first version
00:58	puredanger	http://dev.clojure.org/jira/browse/CLJ-1663 in particulra
00:58	hiredman	lemme check the HEAD of master
00:58	puredanger	that was fixed in alpha6
00:59	hiredman	I dunno, I just have the script using whatever jar is in the target/ of my local clojure checkout
01:00	puredanger	sounds solid :)
01:00	puredanger	java -cp thatclojure.jar clojure.main -e "clojure-version" would tell you I think
01:00	hiredman	this is real бизнес critical stuff
01:00	hiredman	deleting old dumps of clojurebot's database
03:37	mnngfltg2	Question about cider: suppose I have (+ 4 5) in my buffer and the cursor on the closing parenthesis. If I hit ^C^E in cider, I get 5.
03:37	mnngfltg2	That seems surprising to me. If I'm in lisp-interaction-mode (elisp), the same thing gives me 9.
04:08	xinau	mnngfltg2: you need to place the cursor behind the parenthesis
04:09	xinau	cause it evaluets the last expression before the cursor
04:09	xinau	wich would be 5
04:56	vagrant-	i can read a file line by line using doseq, but how do i read only the first 5 lines?
04:56	hyPiRion	vagrant-: loop and recur, for example
04:59	hellofunk	i'm trying to parse some EDN in a Ring handler. what am I missing? http://stackoverflow.com/questions/30209769/unable-to-parse-out-edn-in-this-server-request
04:59	crocket	ㅍㅁㅎㄱ뭇
04:59	crocket	おお
04:59	crocket	ouch
05:34	mnngfltg2	xinau, yeah that's how it works but it's inconvenient if like me you use evil-mode -- plus it's different to how lisp-mode works
05:42	wasamasa	mnngfltg2: evil actually hacks C-x C-e to behave differently
05:42	wasamasa	mnngfltg2: this hack only works for emacs-lisp-mode though
05:42	mnngfltg2	wasamasa, aha!
05:42	wasamasa	mnngfltg2: so perhaps this explains your observation
05:42	mnngfltg2	that's a good place to start
05:43	wasamasa	I guess I prefer more consistency, would be nice to be able to control these independently though
05:44	wasamasa	the cursor pushing happens when you're in normal state and point would be after the end of line
05:45	sqd	in the clj repl, is there a way to reload java code with (import), similarly to using (require 'myns :reload)?
05:47	sqd	also, is there a way to debug "No matching ctor found for class" errors? i'm calling a constructor (new RRport myapplet), and i'm quite sure myself the myapplet instance is of the right class
05:50	sqd	ok, reloading java code seems to require restarting the repl and the java code update fixed the ctor error. still would be nice to be able to reload java code in a running repl
05:58	escherize	Is there a resource for doing regex that grab groups - in clojure?
05:59	escherize	,(use 'clojure.string)
05:59	clojurebot	#error {\n :cause "denied"\n :via\n [{:type java.lang.SecurityException\n :message "denied"\n :at [clojurebot.sandbox$enable_security_manager$fn__835 invoke "sandbox.clj" 69]}]\n :trace\n [[clojurebot.sandbox$enable_security_manager$fn__835 invoke "sandbox.clj" 69]\n [clojurebot.sandbox.proxy$java.lang.SecurityManager$Door$f500ea40 checkPropertyAccess nil -1]\n [java.lang.System getProperty ...
06:00	mnngfltg2	escherize, sure, re-matches
06:16	sqd	when i have a MyClass instance in clj, can i add a method to it that java's .getClass().getMethod() will recognise?
06:27	crocket	clj
06:32	ddellacosta	what's the right way to specify a byte array in schema?
06:34	mpenet	(Class/forName "[B") maybe
06:34	mpenet	or (type (byte-array 0))
06:35	mpenet	(untested)
06:36	ddellacosta	mpenet: okay, thanks.
06:36	augustl	how would you convert [3 11 8] into [3 14 22] - each item is the sum of itself and the previous number
06:36	ddellacosta	don't love (Class/forName "[B") but seems to work for now
06:40	ddellacosta	augustl: here's one way
06:40	ddellacosta	&reduce #(conj %1 (+ (or (last %1) 0) %2)) [] [3 11 8])
06:40	lazybot	⇒ #<core$reduce clojure.core$reduce@7bed0b7a>
06:40	ddellacosta	d'oh
06:40	ddellacosta	&(reduce #(conj %1 (+ (or (last %1) 0) %2)) [] [3 11 8])
06:40	lazybot	⇒ [3 14 22]
06:40	ddellacosta	augustl: ^
06:43	augustl	ddellacosta: ah, nice :)
06:45	augustl	&(reduce #(conj %1 (+ (last %1) %2)) [3] [11 8])
06:45	lazybot	⇒ [3 14 22]
06:45	augustl	with first/rest instead of hardcoding
06:49	ddellacosta	augustl: and then you could do...
06:49	ddellacosta	&(defn foo [c] (reduce #(conj %1 (+ (last %1) %2)) [(first c)] (rest c)))
06:49	lazybot	java.lang.SecurityException: You tripped the alarm! def is bad!
06:49	ddellacosta	woops
06:49	ddellacosta	well, anyways, you get the idea I think...
06:53	TEttinger	wow I can't believe no one mentioned ##(reductions + [3 11 8])
06:53	lazybot	⇒ (3 14 22)
06:53	TEttinger	I love reductions
06:55	TEttinger	augustl: how's the reductions answer look?
06:55	ddellacosta	TEttinger: I didn't know about that! Thanks.
06:55	TEttinger	reductions rules!
06:56	ddellacosta	seems clearly superior to the vanilla reduce version, basically encapsulates that semantics itself. Quite cool
06:56	TEttinger	it comes up often enough that you want to reduce to generate a collection, but the existing stuff is a bit clunky until you find reductions
06:56	ddellacosta	right, that's quite cool
07:00	TEttinger	if you wanted to specifically add the two most recent numbers, ##(let [coll [3 11 8 5 100 13]] (map + coll (concat [0] coll)))
07:00	lazybot	⇒ (3 14 19 13 105 113)
07:33	bcn-flor	I would like to add text to the pprinted objects, but clojure.pprint/pprint takes only one argument. Is there a pprint which takes multiple arguments ? eg. (pprint "Temperature is:" x " degrees")
07:35	augustl	TEttinger: ah, nice
07:35	augustl	TEttinger: I'm actually using mori, so I don't have it, but nice to know!
07:35	justin_smith	bcn-flor: maybe pr-str instead of pprint?
07:36	justin_smith	if not, there is (with-out-str (pprint x)) wrapped in println
07:36	justin_smith	err, the pr-str would also be wrapped in println
07:37	justin_smith	,(println "The temperature is" (pr-str {:degrees 44 :scale :ferenheit}) "degrees")
07:37	clojurebot	The temperature is {:degrees 44, :scale :ferenheit} degrees\n
07:37	irctc_	Is there a way to divide factions with a whole component? like (/ 9 1/2 4 2/3 ).
07:38	justin_smith	,(+ 9 2/3)
07:38	clojurebot	29/3
07:38	irctc_	Preventing 4 numbers from being read.
07:38	justin_smith	there is no input format that accepts "9 2/3" as a single input
07:41	dysfun	except with the quotes ;)
07:41	justin_smith	haha
07:42	hyPiRion	,9 2/3
07:42	clojurebot	#<NumberFormatException java.lang.NumberFormatException: Invalid number: 9 2/3>
07:42	hyPiRion	oh well, close enough
07:42	justin_smith	interesting that it wanted 9 2/3 to be one number though, rather than treating it as two numbers input
07:43	justin_smith	that looks like a clojurebot thing only
07:43	hyPiRion	justin_smith: return of the non-breaking space
07:43	justin_smith	d'oh, I should have suspected
07:43	hyPiRion	:p
07:44	timvisher	i'm trying to extend a the clojure.data.json.JSONWriter protocol to java.util.Date. i have it working at the repl but an ns unrelated to the one in which i wrote the extend form is still claiming that it can't write java.util.Date. any clues?
07:45	timvisher	i sort of have the impression that extending a protocol is something like monkey patching so that if i do it anywhere it's available everywhere within the same vm. no idea how accurate that is.
07:46	timvisher	(having never done any monkey patching in real life anyway, it seems like an apt comparison :)
07:47	justin_smith	yes, if you extended java.util.Date to implement the clojure.data.json.JSONWriter protocol, it should just work
07:47	hyPiRion	timvisher: have you required the namespace where you extend jsonwriter to date?
07:48	timvisher	hyPiRion: in the ns in which i'm writing?
07:48	timvisher	or in the jvm
07:48	timvisher	rather, in the ns in which i'm getting the error
07:48	hyPiRion	timvisher: yes, the ns where your error occurs
07:48	clojurebot	Pardon?
07:49	timvisher	hyPiRion: ah. no i don't believe so. i don't have direct access to that ns, though.
07:49	justin_smith	how could you make it load if you don't have access to it?
07:49	bcn-flor	justin_smith: thank you. is there way to make pprint not add a newline character after the printed object ?
07:50	hyPiRion	hm, you have to load it somehow, I think
07:50	timvisher	justin_smith: it's in a dependency
07:50	justin_smith	bcn-flor: you could use subs to take the newline out, but that is about it I think
07:50	justin_smith	timvisher: you can't require code from a dependency?
07:50	timvisher	so my-app → third-party-dep - ns throwing the error
07:51	timvisher	sorry, i think i'm missing something here :)
07:51	justin_smith	oh, I get it
07:51	timvisher	i'm interpreting what hyPiRion is saying as 'require the ns in which you extend the protocol in the ns that's throwing the error'
07:51	timvisher	is that incorrect?
07:51	justin_smith	so, make sure to require your extending ns before calling the third party dep
07:51	hyPiRion	timvisher: oh, right. It should be sufficient to have it loaded on the jvm, but I'm not 100% sure on that
07:52	timvisher	ok, that's what i expected to work. i guess my ns isn't being required in the test runners then
07:52	timvisher	but my assumption was valid, that so long as the extend form makes it through the repl in a particular vm, the protocol is extended for all parties involved
07:52	justin_smith	timvisher: the trick is to require the code because otherwise the file never gets loaded, it's good practice to do it from where the functionality is needed, but as you demonstrate sometimes other things happen
07:53	timvisher	'it' being extend the protocol?
07:53	justin_smith	right
07:53	timvisher	yes
07:55	justin_smith	timvisher: have you been able to make your json-writing date object work in a repl context?
07:55	hyPiRion	justin_smith: he said so
07:55	justin_smith	hyPiRion: sorry, I missed that part
07:55	timvisher	justin_smith: yes. i developed it interactively at the repl so i know it works from that context :)
07:56	timvisher	essentially what's happening is that in the repl my extension's working fine but running lein midje it's blowing up
07:56	timvisher	i haven't tried calling the code that's blowing up from the repl though, that's probably worthwhile.
07:57	justin_smith	or, since you are doing tests, you could directly test generating json from a date, as you did in the repl
07:58	hyPiRion	timvisher: hm, did require the ns extending date in the test ns?
08:00	timvisher	hyPiRion: that was it. :) i had extended the protocol in an ns that wasn't required from the tests
08:00	timvisher	(inc hyPiRion justin_smith)
08:00	lazybot	⇒ 1
08:00	timvisher	is that variadic? :)
08:00	justin_smith	(identity hyPirion justin_smith)
08:00	lazybot	hyPirion justin_smith has karma 1.
08:01	timvisher	it should be
08:01	timvisher	lol
08:01	timvisher	(inc hyPirion)
08:01	lazybot	⇒ 74
08:01	timvisher	(inc justin_smith)
08:01	lazybot	⇒ 253
08:01	timvisher	hahaha
08:01	timvisher	actually i worked at place that exclusively paired and we had some scripts written around git that would change the author name so you would sit down, change the author name to 'tim and joe' and work
08:02	justin_smith	haha, nice
08:02	tdammers	oh god
08:03	justin_smith	next you need an email server that does set theory, so that you can do union emails to go with the union commiter names
08:03	timvisher	i sort of like that the member 'hyPirion justin_smith' now has one point :)
08:03	tdammers	you should propose adding some "security" to your git server to make sure only authorized people are allowed to commit
08:04	hyPiRion	timvisher: it's sad it isn't commutative =/
08:04	hyPiRion	(inc justin_smith hyPiRion)
08:04	lazybot	⇒ 1
08:04	timvisher	tdammers: oh it gets worse. we also all used the same email address and all pushed to the same central repo without branches
08:04	timvisher	but hey! it was faster than svn so… :)
08:05	timvisher	justin_smith: the union email idea would have been brilliant :)
08:05	tdammers	oh boy
08:05	tdammers	I worked at a place once were e-mail addresses were considered a scarce good
08:06	tdammers	you could not get a personal e-mail address unless you had worked there for at least a year
08:06	tdammers	and when you did, it wasn't really personal
08:06	tdammers	instead, you'd get an address bound to your role
08:06	tdammers	or rather, named after your role, but bound to you personally
08:07	tdammers	so we had support@, development@, programming@, it@, and they all belonged to programmers
08:07	hyPiRion	I once had an email address with an apostrophe in it (it's legal according to the spec!), but it bounced so often I didn't bother to keep it
08:07	tdammers	we also had a standing order that under no circumstances was the "trash" folder to be emptied, because that's where you were supposed to keep your "archived" e-mail
08:08	tdammers	(in a nutshell, boss had a stupid workflow and demanded everyone else also use it, because it worked for him, so it clearly was the perfect workflow)
08:09	justin_smith	hyPiRion: yeah, email validators suck
08:10	timvisher	has anyone else been experiencing an unusual amount of connectivity issues with freenode lately? i get disconnected once or twice a day lately.
08:11	hyPiRion	justin_smith: seen http://ex-parrot.com/~pdw/Mail-RFC822-Address.html ?
08:11	justin_smith	timvisher: I have been disconnected maybe twice since I got a digital ocean server about 6 months ago, I just keep my irc client running inside screen and ssh in
08:12	justin_smith	timvisher: I am more likely to get disconnected randomly by ssh (especially from work), but on irc I stay connected
08:12	justin_smith	months at a time
08:12	timvisher	justin_smith: yeah. i have a permanent tmux session on a server and mosh over to it. what are you using to connect?
08:13	justin_smith	irssi
08:13	justin_smith	"comments in email addresses" - I should have figured this went deeper
08:14	justin_smith	wow, email addresses allow parens (even nested) and they are not counted as part of the address
08:15	justin_smith	how did I not notice this before
08:15	oddcully	emailrepl!
08:15	crocket	Clojure data types are simple.
08:15	crocket	Simplicity rules.
08:16	hyPiRion	justin_smith: Somebody just had to add it, eh
08:16	justin_smith	crocket: they are one of the best things about the language
08:16	crocket	wasamasa, Humans are clever bots.
08:16	justin_smith	john(this is allowed)@example(this is too).com
08:17	wasamasa	crocket: nope
08:17	hyPiRion	and(so (is this))@example((I do) not (know why)).com
08:17	justin_smith	haha
08:17	Glenjamin	does that become andsoisthis@exampleIdonotknowwhy.com ?
08:17	hyPiRion	Glenjamin: no, it becomes and@example.com
08:18	justin_smith	Glenjamin: it becomes and@example.com
08:18	Glenjamin	what
08:18	justin_smith	they are comments
08:18	Glenjamin	that's crazy!
08:18	hyPiRion	yes. yes it is.
08:18	mavbozo	woot! space before @ is considered to be part of a valid email address
08:18	justin_smith	hyPiRion: in fixed width, we made our messages line up perfectly
08:18	mavbozo	i check it here: http://sphinx.mythic-beasts.com/~pdw/cgi-bin/emailvalidate
08:19	hyPiRion	justin_smith: great minds align their text
08:19	mavbozo	what a coincidence! today i find out that one of my customer entered 'xxxx @gmail.com'
08:20	mavbozo	i thought that was a invalid email address
08:20	justin_smith	gmail does not allow me to use email addresses with comments
08:20	hyPiRion	Well, comments in emails give you the option to send legal clojure expressions in your address, so there's that.
08:21	justin_smith	best form of communication ever
08:22	justin_smith	mail to: joe(apply str (map char [116 104 101 121 32 97 114 101 32 119 97 116 99 104 105 110 103]))@example.com
08:23	mavbozo	mavbozo(remove-last-email-from-me)@mavbozo.com ;; in case someone accidentally sends unwanted message
08:24	hyPiRion	justin_smith: hah, one should put a quine as a comment
08:24	justin_smith	indeed
08:25	mavbozo	or mavbozo(burn-after-read)@mavbozo.com ;; mission impossible style
08:34	te	I'm doing some wiring together of liberator & swagger compojure-api, is it considered bad form if your using a var value at macro expansion time ? (via var-get) - an macro example here : https://www.refheap.com/101041
08:38	justin_smith	te: resolve already returns a var, why not just deref it?
08:39	justin_smith	in fact, why even explicitly call resolve?
08:40	justin_smith	te: in my usage, resolve is useful when you need to use something at runtime, but it can't be available while compiling
08:40	justin_smith	which is not a constraint here at all
08:40	justin_smith	so I don't really understand what is being gained
08:42	justin_smith	what would break in your macro if (var-get (resolve verbs)) was replaced with verbs
08:46	te	Instead of using a literal list with symbols in my macro like (rest-service [get post] ... ...) i would like it to generate x number of forms based on a def list. but because of ~@ the verb parameter to the macro is not expaned. Another way it is to (eval the output of the macro without the gensym)
08:54	stain	hi, is it possible to get almost all the benefits of (defrecord) (e.g. IMap, toString, etc) while being able to also override toString and hashCode() as you can with deftype?
08:55	stain	I tried using deftype, but I'm overwhelmed with having to implement all of the things you get for free from defrecord
08:55	stain	perhaps there's a shortcut macro or something?
08:56	dnolen	stain: there is no simple way
08:57	Bronsa	ztellman should have a library for that IIRC
08:58	Glenjamin	i can find collection-check, i was sure he had a lib for generating collections too
08:59	Bronsa	maybe something in potemkin.collections but i might be wrong
09:11	te	justin_smith, since I need the values from the def at expansions time to generate X number of forms - it would fail since the verbs is a symbol not a collection eg: https://www.refheap.com/101042
09:11	justin_smith	te: that's what ~ is for
09:12	te	justin_smith, but not along with the splice @
09:12	justin_smith	oh, wait, OK
09:17	n8dawg	Hi All, wondering if i've found a memory leak in loop/recur: heres the simple code to reproduce: http://pastebin.com/e6sznesX
09:25	sm0ke	hey clojurelings
09:25	hyPiRion	n8dawg: with what kind of numbers do you run that with?
09:25	sm0ke	so this new build tool boot doesnt seem to compile java eh?
09:26	hellofunk	can anyone advise what i'm missing in this EDN parsing from a Ring response? http://stackoverflow.com/questions/30209769
09:26	n8dawg	hyPiRon: anything where the cumulative size is bigger than the heap, so say set size = (* 1024 1024) and n = (* 10 1024)
09:26	n8dawg	thats 10GB
09:27	justin_smith	hellofunk: what did you intend to do to r?
09:28	hyPiRion	n8dawg: I did 1000 and 1e8, which failed
09:29	n8dawg	hyPiRon: seems like loop is holding onto the head, is tht expected behaviour?
09:29	justin_smith	n8dawg: how do you know it's doing that?
09:30	hyPiRion	justin_smith: I'm not sure how else it would manage to get out of memory this way though.
09:30	hellofunk	justin_smith: at the moment I am just reading it to see if the EDN stuff has been parsed out
09:32	hyPiRion	n8dawg: yeah, that smells like a bug. https://www.refheap.com/101045 works just fine
09:33	justin_smith	hellofunk: I bet the body has already been consumed, but if not you can get it with slurp
09:34	justin_smith	hellofunk: I really don't know how wrap-edn-params and a put request would combine properly though
09:34	justin_smith	maybe I just need coffee
09:34	sm0ke	justin_smith: if it had been consumed he would have got a cannot reset seek error
09:35	justin_smith	sm0ke: when?
09:35	sm0ke	hellofunk: do you think the edn is proper and parsable?
09:35	hyPiRion	n8dawg: yep, the macroexpansion expands outside of the loop. I think this has been discussed earlier though, but I can't find any jira ticket for it right now
09:36	sm0ke	justin_smith: if the body had been consumed previously
09:37	hellofunk	sm0ke: it is being sent using cljs-ajax which automatically formats into EDN
09:37	justin_smith	I mean previously to what
09:38	sm0ke	so he has two middlewares, but the content type is end so wrap-params will not slurp the body
09:38	hyPiRion	woah, that's a really stupid expansion
09:38	sm0ke	edn*
09:38	sm0ke	it is most probably being consumed by wrap-edn-params only
09:39	sm0ke	hellofunk: could you check the request instead?
09:40	sm0ke	i think if the middleware is sane it should add a param to req map like :edn-params
09:40	stain	Glenjamin: thanks -- I found https://github.com/ztellman/potemkin which might or might not help me :)
09:40	sm0ke	ah there indeed is a :edn-params but it is nil
09:41	sm0ke	hellofunk: what is the edn?
09:43	sm0ke	what ever it is, it is being parsed to nil, if you have some custom edn you probably better of writing you own middleware
09:45	sm0ke	weird it seems to just do a `read-string` and merge with existing params https://github.com/tailrecursion/ring-edn/blob/master/src/ring/middleware/edn.clj#L26
09:45	sm0ke	so anything should work
09:45	sm0ke	i mean given its a map
09:45	hellofunk	sm0ke: {:a 1 :b 2} as a test
09:45	sm0ke	no way
09:45	sm0ke	that should work
09:46	sm0ke	hellofunk: could you remove the wrap-param middleware, just to be sure
09:50	justin_smith	wait, is the body of a put even considered a location for params?
09:51	justin_smith	I'd consider it to be a document
09:51	sm0ke	?
09:51	justin_smith	it's a put request
09:51	sm0ke	dont be old fashioned
09:51	sm0ke	i have seen people do -d '' in a GET
09:52	justin_smith	sm0ke: OK, I'm just thinking of reasons this would be failing
09:52	justin_smith	not being prescriptive
09:52	justin_smith	IOW see if changing it to post changes anything
09:52	sm0ke	afaict there is no racism in this code https://github.com/tailrecursion/ring-edn/blob/master/src/ring/middleware/edn.clj
09:52	sm0ke	based on type of request
09:54	hellofunk	sm0ke: let me try that, one moment
09:54	sm0ke	to be honest i dont think that will make one bit difference
09:55	sm0ke	as wrap-params looks for content-type before slurping
09:55	sm0ke	just getting hellofunk 's hope high here
09:56	sm0ke	hellofunk: could you do yourself a favour an try with a curl request instead please?
09:56	sm0ke	curl -X PUT -H "Content-Type: application/edn" -d '{:name :barnabas}' http://localhost:8080/whatever
09:56	hellofunk	sm0ke: so removing wrap-params made no difference. i'll try curl next. but looking at the nrepl output from println on a server has always worked.
09:57	sm0ke	http://localhost:6542/ajax-example in your case
09:58	hellofunk	sm0ke: I assume my :body in the response will just be my full request as (str r) ?
09:58	sm0ke	first, what you are printing is not response but resuest
09:59	puredanger	Clojure 1.7.0-beta3 is now available https://groups.google.com/d/msg/clojure/bCmETw2F1jY/OQfrQH_39zoJ
09:59	wasamasa	yay
09:59	sm0ke	request*
09:59	ddellacosta	omg was just wondering about the status of 1.7
09:59	hellofunk	sm0ke: i meant, right now in the SO code snippet, I am not returning anythign that would be useful in a curl response
09:59	n8dawg	hyPiRion: good catch its the macroexpansion, using loop* doesn't seem to exhibit issue
09:59	sm0ke	hellofunk: does not matter
10:00	sm0ke	puredanger: nice work! +1
10:00	hellofunk	sm0ke: well, the curl reponse looks identical to the nrepl println
10:00	sm0ke	hellofunk: dont care about response, see the server log
10:00	sm0ke	hellofunk: is there a :edn-params there?
10:02	sm0ke	also i dont really like that PUT definition , looks weird, its amazing how may type of dsl in there for route definitons
10:02	sm0ke	i am always confused to see someones route defintions
10:02	hellofunk	sm0ke: the nrepl response is the same with curl.
10:03	hellofunk	sm0ke: PUT vs POST should make no difference in this
10:03	sm0ke	hellofunk: so :edn-params is nil?
10:03	hellofunk	sm0ke: yes
10:03	sm0ke	I give up
10:05	hellofunk	sm0ke: thanks all the same. when/if i figure out what the issue is, i'll update the SO question in case you are curious
10:05	sm0ke	hellofunk: thanks bookmarked
10:07	tdammers	well, fwiw, route semantics tend to differ quite a bit between websites/applications
10:07	tdammers	makes sense to have different ways of specifying them
10:07	sqd	does anyone have experience running clojure on an intel edison? i wonder about the performance. doing some serial, ble and http communication and simple number processing
10:07	sqd	maybe also sound
10:26	luxbock	Bronsa: using clojure.tools.analyzer.jvm/analyze-ns, for a :binding node, is it somehow possible to retrieve the non-macroexpanded forms for the value of the binding?
11:19	hellofunk	sm0ke: justin_smith: the interesting development in this saga is a (slurp (:body r)) is empty, despite that the content-length is correct for the passed-in map
11:25	justin_smith	hellofunk: the body has a type that only can get read once
11:25	justin_smith	it's stateful
11:26	justin_smith	I thought it would error, but not super-surprised if it would give nil
11:27	justin_smith	,(require '[clojure.java.io :as io])
11:27	clojurebot	nil
11:27	justin_smith	,(def i (io/reader (.getBytes "hi")))
11:27	clojurebot	#'sandbox/i
11:27	justin_smith	,(slurp i)
11:27	clojurebot	"hi"
11:27	justin_smith	,(slurp i)
11:27	clojurebot	#error {\n :cause "Stream closed"\n :via\n [{:type java.io.IOException\n :message "Stream closed"\n :at [java.io.BufferedReader ensureOpen "BufferedReader.java" 115]}]\n :trace\n [[java.io.BufferedReader ensureOpen "BufferedReader.java" 115]\n [java.io.BufferedReader read "BufferedReader.java" 172]\n [clojure.core$slurp doInvoke "core.clj" 6650]\n [clojure.lang.RestFn invoke "RestFn.java" 4...
11:27	justin_smith	that's what I expect...
11:28	hellofunk	justin_smith: does that mean that the middleware is reading it therefore it is empty when i println it?
11:28	justin_smith	that's what I would expect
11:29	justin_smith	in my experience the body is already read by the time it hits my handler
11:30	hellofunk	justin_smith: but I took out the middleware completely and the body is still empty, despite a valid content-length that is not otherwise reflected by anything else in the request map. the content is clearly in there somewhere.
11:33	clojer	Submitting a form in my Luminus app produces this error: {"type":"unknown-exception","class":"java.lang.IllegalArgumentException"}
11:33	clojer	Is there any way of getting more detail?
11:37	justin_smith	there was no stack trace printed?
11:39	clojer	justin_smith: Yes, but only "java.lang.IllegalArgumentException: Key must be integer" seems relevant
11:40	clojer	justin_smith: Could do with at least a relevant file and line number
11:40	justin_smith	well, the stack trace should have lots of files and line numbers
11:40	sqd	is there a transducer i can apply to seqs so that (nth my-transduced-seq n) is the average of (take n my-seq)?
11:41	clojer	justin_smith: Yes but it all seems to point to core.clj and various middleware files.
11:41	sqd	(i'm actually using an async chan, but this may be easier to explain)
11:42	justin_smith	clojer: it should at least tell you which code of yours last touched the data before it went into clojure.core etc.
11:43	justin_smith	if you read closely
11:46	clojer	justin_smith: Just copied the stacktrace into Vim then grep -v 'ed anything containing "core.clj", "org.eclipse" and "middleware". What's left doesn't refer to anything I've edited.
11:54	justin_smith	clojer: at the very least you should see the namespace that defined the handler or launched the server
12:22	hellofunk	can anyone summarize like i'm in 5th grade the difference between transit and EDN and which to use when?
12:23	puredanger	edn is for people
12:23	puredanger	transit is for machines
12:23	puredanger	transit over json is best for browser to backend
12:23	puredanger	both have extensible type systems
12:24	hellofunk	if using it for ajax, which would be a better format to pass between?
12:24	puredanger	transit has much better performance due to 1) leveraging high-perf json (or messagepack) parsers and 2) caching of values in the stream
12:24	puredanger	I'd use transit over json
12:25	puredanger	it has a "verbose" mode you can use for debugging so you can get the human-readable aspect if you need it
12:25	hellofunk	i see
12:25	puredanger	more: https://groups.google.com/d/msg/clojure/9ESqyT6G5nU/2Ne9X6JBUh8J
12:25	hellofunk	cool thanks
12:28	bensu	in a ns declaration, should the order of the :import and :require clauses matter?
12:29	justin_smith	bensu: it shouldn't, it becomes a hash-map iirc.
12:30	bensu	justin_smith: thanks, I'll investigate further then.
12:30	justin_smith	the idiom is to put :require before :import though
12:31	puredanger	it does not matter
12:32	mdrogalis	justin_smith: That's great news. :)
12:34	bensu	puredanger justin_smith: thanks
12:57	justin_smith	mdrogalis: I don't have the tests running (need to figure out how to integrate it with cljs.test) but the actual functionality is there so far. Should be on my github soon.
13:06	bensu	justin_smith: if there are no async tests, adding cljs.test should be as simple as requiring it with #?
13:09	justin_smith	bensu: cljs.test is there, but it acts like the deftest forms never got run
13:09	justin_smith	it's weird
13:09	justin_smith	probably some error on my end
13:12	steffan42	(println (read-line)) in an emacs cider repl fails to print this input - it accepts a stdin from the minibuffer but hangs after pressing return. I have to kill the process.
13:14	steffan42	Calling (read-line) a second time then prints the previous input. Ideas?
13:15	justin_smith	sounds like a bug in cider
13:15	steffan42	okay thanks
13:16	noncom	in cursive, how do i make it so that pressing "(" encloses the selected terms in () instead of replacing them with a "(" ?
13:20	puredanger	I think on mac, cmd-shift-( does that
13:21	puredanger	actually I guess that just encloses the next form
13:21	puredanger	not the selected
13:21	noncom	puredanger: hmm, i am on win...
13:22	noncom	there is Wrap in () in Structural Editing, i have assigned Shift+9 to it, to no avail...
13:22	noncom	simply does not work
13:22	puredanger	well mash down some different modifiers then :)
13:22	noncom	ah, it works as you said - encloses the next form instad of enclosing the selection
13:23	noncom	(that's different from how it works in ccw eclipse)
13:23	puredanger	I usually just make empty and slurp forms :)
13:23	noncom	what is your hotkey for slurping?
13:24	noncom	will assign the same.. already got some headache on figuring out good hotkeys with cursive :)
13:24	puredanger	I use Cmd-Shift-K
13:24	puredanger	but I think I just grabbed one of the sets that comes with Cursive to get that
13:25	puredanger	yeah, I use the "Mac OS X 10.5+" settings + various tweaks
13:25	noncom	no, nothing comes with cursive... they say "figure it out for yourself" in the getting started..
13:25	noncom	hmm.. somehow your setup was different...
13:26	noncom	ah, i have the config you say
13:26	puredanger	no that changed a while ago - it comes with mulitple binding sets now
13:26	noncom	the mac 10.5+
13:26	puredanger	under (in IJ 14) Other Settings -> Clojure -> Keybindings there is a "binding set" control
13:26	puredanger	to install a whole set
13:27	noncom	gmmm (println "\n\nCORE: execute with args " args "\n\n")
13:27	noncom	oooops
13:27	noncom	http://joxi.ru/VrwoVvYsRGKMrX - this one
13:28	noncom	i just don't have it :)
13:28	puredanger	don't have the set or don't have the control?
13:28	noncom	don't have the sets you mention. i have them, but in the general Settings -> Keymap thing
13:28	noncom	well, maybe i'll go with Emacs se tthen...
13:29	noncom	or Cursive..
13:29	puredanger	the Cursive one is basically the same as what I have
13:29	noncom	alright, so i'll set this one too. had enough of this already on the few days trying to get accustomed to cursive :)
13:31	noncom	whoooa! so much fun! now it maps half of the things to Meta + something, and it just does not work on win
13:31	noncom	alt is not meta...
13:31	puredanger	well I can't help you there :)
13:32	noncom	yeah... btw, the whole mapping did not apply anyway.. it is reset back to NONE when i go back to the keybindings..
13:32	noncom	ahh, no problem... it's just software :)
13:34	puredanger	maybe ping cfleming for that
13:41	noncom	oh, he is very budy right now.. i have already loaded him with lots of questions ))
13:42	noncom	*busy
13:44	fourq	Where in the docs will I find info about the caret symbol?
13:44	fourq	Evaluations?
13:45	TimMc	fourq: Check out http://clojure.org/reader (Macro characters)
13:45	fourq	ty
13:45	ToxicFrog	fourq: I generally look at "the reader" first
13:45	fourq	gtk
13:45	ToxicFrog	And indeed going there and looking for ^ will take you straight to the section on metadata
13:48	dfletcher	is there something with a similar api as get-in but to set a value? like, set it and return me a new nested map with the changed value? similar to procedural languages when you do a['foo']['bar'] = 'baz'; except more clojure-ish.
13:48	Glenjamin	(doc assoc-in)
13:48	dfletcher	ty
13:48	clojurebot	"([m [k & ks] v]); Associates a value in a nested associative structure, where ks is a sequence of keys and v is the new value and returns a new nested structure. If any levels do not exist, hash-maps will be created."
13:48	dfletcher	I guessed "set-in" hehe
13:49	TimMc	dfletcher: There's also update-in which is more general.
14:08	hellofun`	justin_smith: http://stackoverflow.com/questions/30209769/unable-to-parse-out-edn-in-this-server-request/30222274#30222274
14:14	sqd	jvisualvm tells me fmp.web$app$fn__11124$state_machine__8430__auto____11125$fn__11127.invoke () seems to be causing trouble. does that mean that the clojure.core.async/go state machine defined in fmp.web/app is the culprit or could it be a state machine elsewhere?
14:25	OscarZ	is there some function etc. for this: evaluate something and if its truthy, then it will be the value, otherwise null ?
14:30	arohner	OscarZ: that sounds like 'if to me
14:30	arohner	or 'when
14:30	justin_smith	hellofun`: weird
14:31	justin_smith	hellofun`: maybe it's because wrap-edn-params is destructive
14:31	amalloy	OscarZ: so that function would be (fn [x] (when x x))
14:32	justin_smith	hellofun`: so in order to route, it passes in the request, the body is consumed by wrap-edn-params
14:32	justin_smith	hellofun`: by the time you do this again, there is no longer a body to consume
14:32	OscarZ	ok, but wouldnt that evaluate it twice ? i would like to avoid that if possible
14:32	hellofun`	justin_smith: seems totally against the functional paradigm encouraged by Ring
14:32	amalloy	OscarZ: alternatively, it is just like identity, except it replaces false with nil. do you really need to tell false and nil apart?
14:32	amalloy	no, of course not
14:32	justin_smith	hellofun`: which tells me that you should combine all param manipulation into one middleware, that wraps all routes that need the params
14:33	amalloy	function arguments are evaluated when they're passed into the function
14:33	hellofun`	justin_smith: yeah that's how I fixed it, but I'd have never thought this was the problem in a functional routing library like Ring, last thing I'd expect
14:33	OscarZ	amalloy, oh yes that works of course..
14:34	amalloy	(fn [x] ({false nil) x x)) is another silly way to write it
14:34	amalloy	or, no, i guess that doesn't work. has to be (fn [x] ({false nil nil nil} x x))
14:34	justin_smith	hellofun`: I guess you could fork wrap-params, wrap-edn-params etc. with a version that creates a synthetic body after consuming the original (see for example what my groundhog lib does to recreate request bodies)
14:36	OscarZ	amalloy, whats going on there :D
14:36	amalloy	OscarZ: well remember that all your function does is replace false with nil
14:36	mikerod	This is interesting
14:36	mikerod	https://github.com/clojure/clojure/commits/04c59e81c4f16bfcaef2fdfd3f5bc5d887445045/src/jvm/Reader.g
14:36	mikerod	first cut at ANTLR-based Reader
14:36	mikerod	so this was tried earlier on
14:36	amalloy	so you look x up in a map, which just maps nil and false both to nil, and then if it's not there you return x instead
14:38	OscarZ	i see.. i didnt remember map can be used like that :)
14:38	OscarZ	could i write a macro to make that more clean ?
14:40	amalloy	OscarZ: you could write a macro to make it less clean
14:40	OscarZ	hehe ... i mean this one: (fn [x] (when x x)) ...
14:40	OscarZ	function will do i guess
14:40	amalloy	it's just a function. defn it to be a function
14:40	mikerod	I read somewhere that as of clj 1.7 Symbols are no longer intern'ed. Is there a Jira related to this? Also, I never thought they were intern'ed in the first place? The Strings they refer to were interned.
14:40	puredanger	that's more accurate
14:41	puredanger	I think I may have been sloppy in the beta3 email re that
14:41	mikerod	This is relation to https://groups.google.com/forum/#!topic/clojure-dev/58fYUSIEfxg
14:41	mikerod	puredanger: ok, that's fine. It just got me thinking about it more, since it differed from what I thought.
14:42	puredanger	keywords are cached though, as always
14:43	puredanger	we found that String.intern() was a performance bottleneck in symbol/keyword creation
14:45	puredanger	I think with the string de-duplication they're adding to the jvm, we'll get some of that memory tradeoff back too
14:47	mikerod	puredanger: yeah, I read some about the keyword performance in some thread at one point a bit back. I know keywords need to be cached/singleton/comparable by ==, but symbols never had that contract.
14:49	puredanger	no
15:29	bensu	puredanger: beta3 worked fine
15:29	puredanger	cool :)
15:30	bensu	puredanger: how many releases until it's called stable?
15:31	puredanger	I think we're pretty much done, hope to do an RC soon
15:33	bensu	puredanger: great! it really has been a seamless transition. thanks
15:51	fourq	when using :refer from a ns require it's "referring" to only those macros opposed to including the entire ns correct? https://gist.github.com/fourq/ac139f1cadc8ade5b807#file-core-cljs-L4
15:52	fourq	or functions not macros I thinkg
15:52	fourq	think*
15:54	arohner	fourq: it means you can use those fns / macros in the current ns without a qualifier
15:54	arohner	i.e. (put! ...) rather than (cljs.core.async/put! ...)
15:54	fourq	ok, thanks arohner
15:54	arohner	and correct, it doesn't affect other fns in core.async
15:54	fourq	and :refer opposed to :as?
15:54	fourq	as is singlular?
15:56	arohner	:as is shorthand for every fn in that namespace
15:56	arohner	(:require [cljs.core.async :as a])
15:56	arohner	(a/put! ...)
15:57	fourq	ahh, ty again
15:57	arohner	:as only affects macros in very new versions of CLJS
15:58	fourq	I'm still struggling with the difference between a macro and a function tbh
15:59	fourq	but then again all I had to do was search: https://newcome.wordpress.com/2012/02/12/functions-vs-macros-in-clojure/
16:11	cfleming	noncom: https://cursiveclojure.com/userguide/paredit.html: "Settings→Editor→Smart Keys→Surround selection on typing quote or brace. If this option is selected, opening a balanced form will wrap the selection"
16:13	cfleming	noncom: I replied to your mail, haven't heard back - did you get it?
16:20	brainproxy	I have a deftype with a field that is an Integer, and I'm getting warnings from case in a method on that type about it not being primitive
16:20	brainproxy	I can get rid of the warning by running case against (int myfield)
16:21	brainproxy	but is there another way?
16:30	justin_smith	"there has to be a better way!" (cue infomercial for haskell)
16:31	melipone	hello! I have a namespace question. I want to modify just a few functions in a namespace, call it A, and "inherit" all the other from another namespace, call it B. Ok, I know about :require and :use. Now, I have another namespace, call it C, from which I want to call functions from A and B without knowing which one is which. How can I do that? I tried to :require A but C does not know about B. Only A does.
16:33	justin_smith	melipone: require / use are never transitive
16:33	justin_smith	in a given namespace, you only have those things you explicitly map to that namespace
16:33	justin_smith	(plus some core defaults)
16:33	melipone	justin_smith: So, I can't do what I want to do?
16:34	justin_smith	namespace "inheritance" isn't a thing, so I think you can't, no
16:34	justin_smith	I mean you can patch together something that acts like that of course, but I think it would be a hack (see vinyasa)
16:34	melipone	justin_smith: jeez... I can't remember how I used to do that in Lisp
16:35	justin_smith	https://github.com/zcaudate/vinyasa
16:35	melipone	justin_smith: ok, thanks, I'll look at vinyasa
17:02	arohner	is there an idiomatic (i..e built-in) way to convert an int from 0-255 to a byte?
17:02	arohner	I'm dealing with java.io.InputStream and NIO, and InputStream helpfully returns int "bytes", and NIO needs 'real' bytes
17:03	arohner	(byte (- x 128)) isn't too bad
17:04	arohner	hrm, that's wrong
17:05	arohner	also, InputStream.read() returning ints rather than bytes is idiotic
17:07	TimMc	arohner: How would you have it signal end of stream?
17:07	arohner	TimMc: nil?
17:08	arohner	TimMc: I'm just really annoyed by the interplay between APIs that use bytes and APIs that use ints masquerading as bytes
17:08	arohner	also really annoyed by signed bytes
17:22	TimMc	arohner: nil would mean giving up primitives
17:24	arohner	TimMc: if you really care about performance, you shouldn't be casting byte->int and back. At that point, just go to full NIO land, and only operate on byte-arrays
17:28	bostonaholic	I'm creating a new clojure newsletter. Email me at subscribe@clojurelive.com for the latest news and tips on Clojure, ClojureScript, and Datomic.
18:52	ztellman	arohner: (bit-and n 0xFF)
18:54	arohner	ztellman: I'm going the other way, so I'm using (byte (+ (- (bit-and 0x80 i)) (bit-and 0x7f i)))
18:54	ztellman	oh, sorry
18:54	arohner	ztellman: I knew how to do it "by hand", I'm just grumpy that path isn't smoother :-)
18:55	ztellman	arohner: hmm, I had to look up how I did it in primitive-math, but this is simpler: https://github.com/ztellman/primitive-math/blob/master/src/primitive_math.clj#L227
18:56	ztellman	,(byte 0xFF)
18:56	clojurebot	#error {\n :cause "Value out of range for byte: 255"\n :via\n [{:type java.lang.IllegalArgumentException\n :message "Value out of range for byte: 255"\n :at [clojure.lang.RT byteCast "RT.java" 1095]}]\n :trace\n [[clojure.lang.RT byteCast "RT.java" 1095]\n [sandbox$eval25 invoke "NO_SOURCE_FILE" 0]\n [clojure.lang.Compiler eval "Compiler.java" 6792]\n [clojure.lang.Compiler eval "Compiler.j...
18:56	amalloy	ztellman: unchecked-byte ?
18:56	ztellman	,(unchecked-byte 0xFF)
18:56	clojurebot	-1
18:56	ztellman	ok
18:57	ztellman	oh, right, I wasn't using clojure.core/byte, I was using primitive-math/byte
18:57	ztellman	so yeah, that works
18:57	arohner	amalloy: aha! thanks
19:13	cfleming	I'm trying to reproduce the Compiler's method disambiguation (getMatchingParams) in Cursive
19:14	cfleming	I'm struggling to come up with a test case that triggers the subsumes() checks - can anyone suggest one?
19:15	hiredman	is that what does the widening from int to long?
19:15	cfleming	It seems to be for disambiguating similar param lists, but I'm not clear exactly what it's doing
19:16	amalloy	hiredman: it looks that way
19:16	hiredman	(and similar such things?)
19:16	amalloy	cfleming: try class Foo {public void f(int x) {...} public void f(long x) {...}}
19:16	cfleming	I think it's more for boxing
19:17	cfleming	if (!c1.isPrimitive && c2.isPrimitive \|\| c2.isAssignableFrom(c1))
19:18	amalloy	cfleming: f(Integer x), f(long x)? or the other way around possibly, int/Long
19:19	cfleming	amalloy: I've tried that, the trick is I think have to invoke it passing short, or similar. That takes one of the code paths, but I can't provoke the other - I'll play around with it.
19:19	cfleming	amalloy: Yeah, I think it's to do with matching boxing/unboxing rather than type width
19:21	hiredman	actually, it appears to be primarily related to the inheritence hierarchy
19:24	hiredman	the docs for the isAssignableFrom method reference 5.1.4 of the jls (but I think they mean 5.1.5, since it mentions widening ref conversions) https://docs.oracle.com/javase/specs/jls/se8/html/jls-5.html#jls-5.1.5
19:26	Bronsa	cfleming: it should be for cases where you have like foo(Object, Number), foo(Object, Long) and you're invoking (.foo x bar ^Number baz)
19:26	Bronsa	or uhm probably (.foo x bar 1)
19:27	cfleming	Bronsa: Ok, so it's for disambiguating between boxed number types? I think it must be because I can't provoke it with primitives
19:28	Bronsa	cfleming: no, not just number types, as hiredman said it has to do with inheritance hierarchy
19:29	hiredman	well, subsumes does contain the not primitive check on one of the classes, which I forgot about
19:30	cfleming	Bronsa: Ok, got it. So this is between Object types when one derives the other, and it's trying to match the lowest point in the hierarchy?
19:30	cfleming	hiredman: Yeah, there's some primitive/Object check in there too
19:30	cfleming	hiredman: Which I don't understand
19:30	hiredman	so subsumes does appear to be trying to match primitive and reference types
19:30	Bronsa	hiredman: that's for nil argtypes
19:31	hiredman	huh
19:31	Bronsa	say you have foo(int x) and foo(Integer b), (fn [a] (.foo x a)) cannot match foo(int x)
19:32	Bronsa	I'm going from memory here, might be something slightly different a
19:33	Bronsa	there are a lot of weird edge cases and inconsistencies in the method matching stuff scattered between Compiler.java and Reflector.java
19:34	cfleming	Bronsa: Tell me about it. I'm trying to come up with some test cases for the original code so that I can then test them against the code I've migrated to IntelliJ's test system, but it's proving difficult
19:34	cfleming	Bronsa: Suggestions for edge cases very welcome :-)
19:36	cfleming	I'm actually considering just exhaustively testing them and comparing the results, but it's difficult because it depends on the methods available in the class you're testing.
19:36	Bronsa	cfleming: I still haven't gotten it right for tools.analyzer.
19:36	cfleming	Although I could just generate arg/param types randomly and test those I guess.
19:37	cfleming	Bronsa: Do you have test cases there I can look at?
19:38	Bronsa	cfleming: no, sorry. lots of experiments at the repl but I never got to write them down
19:38	cfleming	Bronsa: Ok, no worries. The more I think about it the more I think that just generating test cases is probably the best way to go.
19:40	cfleming	Bronsa: Fortunately I just copied the code and ported it to IntelliJ's type system which has a fairly similar interface, so fingers crossed I get the edge cases right by default
19:44	fourq	Could someone help explain how this anon func is working in this case? https://gist.github.com/fourq/b739a45c817f3292b63c#file-cljs-clj-L6 I don't understand what is going to replace the %
19:45	ztellman	fourq: presumably the existing list of contacts?
19:46	fourq	ztellman I'm not sure. I'm following a tutorial from https://github.com/omcljs/om/wiki/Basic-Tutorial#dealing-with-text-input-fields
19:46	fourq	scroll down about 4 setions
19:46	fourq	I don't understand the syntax, and I've read the #() docs too.
19:47	ztellman	fourq: that's equivalent to (fn [contacts] (conj contacts new-contact))
19:47	ztellman	does that make sense?
19:48	fourq	not really, where is "contacts" coming from?
19:49	ztellman	fourq: I haven't used Om, but I presume "data" is a map that has a :contacts key
19:49	ztellman	and transact! is updating that particular key
19:50	fourq	yeah data is a map and :contacts is a key, but I don't understand how that makes its way into the following form and replaces %
19:51	ztellman	,(update {:contacts ["abc"]} :contacts #(conj % "def"))
19:51	clojurebot	{:contacts ["abc" "def"]}
19:51	ztellman	this takes an input, and then applies the function to a particular sub-field, and returns a modified version of the map
19:51	ztellman	transact! (again, I assume) is doing the same, but then updating an internal atom
19:52	ztellman	does the update example make sense?
19:52	fourq	thanks ztellman. i'm going to process this a bit more.
19:52	ztellman	np, these are all very reasonable questions
19:54	fourq	ztellman ahh. I see it now. I went to the transact! doc "(transact! cursor :text (fn [_] "Changed this!"))"
19:54	fourq	the last part you mentioned makes this make sense
19:58	cfleming	Bronsa: I should be able to exhaustively test all cases using single-element arglists, right? I can't see any interactions between parameters there.
20:00	Bronsa	cfleming: I seem to recall differences between i.e. foo(Number) foo(Long) and foo(Object, Number) foo(Object, Long) actually.
20:01	cfleming	Bronsa: Ugh. I'll see how many cases I'm looking at for one or two element arglists then.
20:01	Bronsa	or, something else. but there was definitely some strange behaviour I tried to fix (and failed) that had to do with multi-element arglist
20:26	irctc__	Test
20:27	irctc__	Awesome. Large Clojure community.
20:28	tahmid	Yep
20:30	brainproxy	justin_smith: no, it was a serious question (re: case,int); I just wasn't sure whether there was a proper way to hint the expression
20:31	brainproxy	doing (case (int x) ...) seems to be the least expensive of various options I tried, so I can live with that of course
20:32	progrocker	got a rather simple conversion of a sequence
20:32	progrocker	https://gist.github.com/anonymous/38f6f285a97be27fd381
20:32	progrocker	unsure how to proceed
20:33	progrocker	i know i could build a list up in a loop but that feels wrong
20:36	amalloy	,(doc mapcat) ; progrocker
20:36	clojurebot	"([f] [f & colls]); Returns the result of applying concat to the result of applying map to f and colls. Thus function f should return a collection. Returns a transducer when no collections are provided"
20:37	progrocker	amalloy: oh, i was actually looking at mapcat but was unsure
20:37	progrocker	thanks
20:39	amalloy	here you want something like (mapcat (partial drop-while #{:pair}) xs)
20:39	amalloy	'(mapcat (partial drop-while #{:pair}) '([:n] [:pair [:number 1] [:number 1]] [:n] [:pair [:number 2] [:number 2]] [:n]) )
20:39	amalloy	,(mapcat (partial drop-while #{:pair}) '([:n] [:pair [:number 1] [:number 1]] [:n] [:pair [:number 2] [:number 2]] [:n]) )
20:40	clojurebot	(:n [:number 1] [:number 1] :n [:number 2] ...)
20:40	amalloy	oh, but you wanted to keep the :n in a vector. well, it's more work then but you can write the mapper function
20:41	progrocker	thanks again
20:43	timvisher	is anyone aware of a way to do static initalization in clojure?
20:43	timvisher	like java static blocks?
20:43	timvisher	http://docs.oracle.com/javase/specs/jls/se7/html/jls-8.html#jls-8.7
20:46	amalloy	timvisher: you want to produce the same bytecode as a static initializer in java, or you want to do something like static initialization but for clojure objects?
20:47	timvisher	amalloy: hmm... asking for a friend. sec. :)
20:48	amalloy	my guess would be, you don't need anything like static initialization, because it solves a problem that doesn't really exist
20:49	timvisher	amalloy: i'm not even sure i fully understand your question. the idea is that he wants to have code that is run at classloader time which is compatible with aot
20:49	timvisher	does that mean producing the same byte code?
20:49	amalloy	why do you want code run at class load time? it is not a very good time to run code
20:50	timvisher	so the other option he's aware of is to provide an `init` function that consumers of his library just know to call
20:50	amalloy	hm. aside from the "very", that message was all monosyllabic. not trying hard enough
20:50	timvisher	for instance: `(defonce hostname (.getHostName (java.net.InetAddress/getLocalHost)))`
20:51	amalloy	timvisher: (def hostname (delay (.getHostName ...))) (defn get-host-name [] @hostname)
20:51	timvisher	so if you aot that iiuhc the localhost address is set at compile time? that wouldn't make any sense.
20:51	timvisher	amalloy: interesting. :)
20:52	amalloy	but try not to do too much of this, because the set of things that you really only want exactly one of is pretty small. remember this is basically a singleton, which is a wall-known causer of problems
20:53	timvisher	yeah. my friend is not being very responsive and i definitely don't understand his goal well enough :)
20:53	timvisher	amalloy: in general i put pretty much everything behind a function call. i haven't run into almost anything that the performance hit of just looking it up every time is really an issue.
20:53	timvisher	and if it is an issue, i find it by profiling and _then_ get it defined only once :)
20:54	timvisher	although i do defonce my nrepl and http servers...
21:11	sobel	timvisher: when i'm helping people i make them be clear on the problem. often enough they needed support on the problem domain more than the implementation domain.
21:11	timvisher	sobel: indeed :)
21:11	sobel	and more importantly, saves me getting too far down the road of assumptions while also making me appear wise
21:12	sobel	...which i understand is a Lisp family value
21:13	timvisher	so, short of more context, is the answer basically that clojure has no `(static ...)` form that does what a stic block would do in java?
21:14	sobel	it solves a problem clojure does not pose
21:14	sobel	at last, based on information available
21:17	timvisher	got it :)
21:18	cfleming	timvisher: Right, there's no way to do that. I generally just create a Java class and put the items I want in there, and then access it from Clojure that way. However I generally want to be initialising things that are easily available from Java, which may not be your case.
21:19	timvisher	cfleming: yeah. it seems like he has some very complex things he's trying to do which don't lend themselves directly to memoization. i have no idea though what it actually is. he doesn't want to write a java class which will call back into his clojure code just to get static blocks. :)
21:19	timvisher	do midje map checkers support a get-in style?
21:19	cfleming	timvisher: Sadly he's out of luck
21:20	timvisher	i.e. `=> (contains {:a {:b}}}`
21:25	timvisher	ah. looks like you can nest the contains... `(fact "asthaeu" {:a {:b :c :d :c}} => (contains {:a (contains {:b identity})}))`
21:46	jumblemuddle	Anyone have thoughts on a new clojure user wanting to get into web game development in clojurescript? I've looked into chocolatier (a library ontop of pixi.js), but I couldn't quite get my head around the figwheel repl workflow.
23:37	justin_smith	having figwheel set up ends up making things much smoother, once it is there