#clojure – 2015-04-07

2015-04-07

01:05	ncthom91	so in clojure I can define multi-arity functions, i.e. functions that have different bodies that correspond to invocations with differet numbers of arguments
01:06	ncthom91	can I do the same style of differentiation on the type of a single argument?
01:06	ncthom91	(defn example ([^String x] x) ([^Integer y] (* 2 y)))
01:11	sm0ke	ncthom91: no you will need multimethod which dispatches on type
01:12	sm0ke	reason being clojure is untyped
01:18	ncthom91	cool thanks
02:31	justin_smith	Well, dynamically typed. There are untyped languages, but they are nothing like Clojure.
02:33	p_l	yeah, static/dynamic and strict/weak are two different axes in typing
03:52	Dyana	Hi guys
04:03	dstockton	Hi
04:11	TEttinger	hi dstockton
05:17	nilern	ncthom91: you can also use protocols if you just need to dispatch on the type of the first argument
08:08	timvisher	anyone aware of a function that obeys this contract? `Compares the keys of two maps, a and b, returning a tuple of sets [things-only-in-a things-only-in-b things-in-both]`
08:08	timvisher	clojure.data/diff doesn't do quite the right thing here, in that it returns nils for equal values
08:08	timvisher	the implementation is very straightforward, but this just seems like something that others would have implemented already
08:23	TEttinger	,(require '[clojure.set :as s])
08:23	clojurebot	nil
08:27	TEttinger	,(let [map-a {:a 1 :b 2 :z 26} map-b {:x 24 :y 25 :z 26} key-diff (fn [a b] (let [ak (keys a) bk (keys b)] [(s/difference ak bk) (s/difference bk ak) (s/intersection ak bk)]))] (key-diff map-a map-b))
08:27	clojurebot	#error{:cause "clojure.lang.APersistentMap$KeySeq cannot be cast to clojure.lang.IPersistentSet", :via [{:type java.lang.ClassCastException, :message "clojure.lang.APersistentMap$KeySeq cannot be cast to clojure.lang.IPersistentSet", :at [clojure.core$disj invoke "core.clj" 1453]}], :trace [[clojure.core$disj invoke "core.clj" 1453] [clojure.core.protocols$fn__6439 invoke "protocols.clj" 135] [clo...
08:27	TEttinger	woah, keys aren't a set?
08:28	TEttinger	(doc keys)
08:28	clojurebot	"([map]); Returns a sequence of the map's keys, in the same order as (seq map)."
08:28	justin_smith	TEttinger: no, they have to be in the same order as vals
08:28	hyPiRion	of course not. It's just (fn [m] /map key m)(
08:28	TEttinger	mm.
08:28	hyPiRion	Well that formatted nicely
08:28	TEttinger	heh
08:28	TEttinger	,(let [map-a {:a 1 :b 2 :z 26} map-b {:x 24 :y 25 :z 26} key-diff (fn [a b] (let [ak (set (keys a)) bk (set (keys b))] [(s/difference ak bk) (s/difference bk ak) (s/intersection ak bk)]))] (key-diff map-a map-b))
08:28	clojurebot	[#{:b :a} #{:y :x} #{:z}]
08:28	hyPiRion	,((fn [m] (map key m)) {:a :b :c :d})
08:28	clojurebot	(:a :c)
08:29	TEttinger	there you go timvisher
08:29	timvisher	TEttinger, hyPiRion: sorry. tried to be clear that the implementation is really straightforward
08:30	timvisher	what i was specifically asking about is whether anything like useful or plumbing had already implemented it
08:30	timvisher	obviously it's trivial to write yourself
08:30	timvisher	you guys have basically written exactly what i already wrote :)
08:30	TEttinger	yeah I like trivial tasks
08:30	justin_smith	I'll take obfuscated Clojure one liners for 500, Alex
08:31	jcromartie	the docs at https://github.com/clojure/core.cache contains ZERO hints that you need to manage cache state yourself
08:31	jcromartie	and that caches are immutable values
08:31	jcromartie	well, sort of immutable... e.g. the TTL cache changes over time
08:33	Glenjamin	jcromartie: i found that too, without a "how-to" guide it's a bit abstract
08:35	noncom	if i have a checkout dependency in lein, how can i find a filesystem path to a ns file inside that project?
08:35	noncom	or, better to a package
08:38	justin_smith	noncom: there's a trick for getting a path for a resource from a classloader iirc
08:41	mavbozo_	jcromartie, Glenjamin is this guide not enough https://github.com/clojure/core.cache/wiki/Using ?
08:41	mavbozo_	jcromartie, Glenjamin is this guide not enough https://github.com/clojure/core.cache/wiki/Using ?
08:41	mavbozo_	sorry, weird keyboard behavior
08:43	mavbozo_	the core.cache wiki is quite good but no mention about it in the README.md
08:45	noncom	,(defn z [] [:a :b :c])
08:45	clojurebot	#'sandbox/z
08:45	noncom	,(-> (z) first)
08:45	clojurebot	:a
08:53	Glenjamin	mavbozo: that Intro doesn't mention anything about persisting the cache. iirc you have to back it by at atom or something?
08:58	TEttinger	,(defn wat [])
08:58	clojurebot	#'sandbox/wat
08:58	hyPiRion	nil
08:58	TEttinger	,(wat "wat?")
08:58	clojurebot	"wat?"
08:59	justin_smith	haha, bom strikes again
08:59	TEttinger	heehee
08:59	TEttinger	that's a good one, it even works in just about any no-arg fn
09:00	TEttinger	,(defn unintended-identity [] (+ 1 2 3))
09:00	clojurebot	#'sandbox/unintended-identity
09:00	TEttinger	,(unintended-identity 1)
09:00	clojurebot	1
09:09	virmundi	hello. I have defined a protocol, ActionRecord, in ns something.data. In the ns something.core I :require [something.data :refer :all]. When I attempt to use the function "save-record" on ActionRecord, I get an unable to resolve symbol: save-record error
09:09	virmundi	The code is (save-record implOfActionRecord arg1 arg2)
09:10	virmundi	if I use (.save-record impl arg...), it works
09:10	virmundi	is this how Clojure functions?
09:10	justin_smith	if you have :refer :all save-record should work
09:11	mavbozo	Glenjamin, yeah, the using guide assumes we know what we are going to do with returned value from those cache operations
09:13	virmundi	justin_smith: you're right. that works. I had :ref [ActionRecord]. is there a way to refer to the protocol without the whole ns and get it work?
09:15	dstockton	i want to load a csv (~100s of MB) into some kind of querying engine, run some aggregates/queries based on the columns, and then destroy all traces
09:15	dstockton	was thinking elasticsearch to be a good fit, are there some names/buzzwords i might be overlooking
09:15	dstockton	i don't need persistence
09:18	schmir	dstockton: sqlite may also help
09:18	dstockton	schmir: indeed, its between those 2 atm
09:18	virmundi	justin_smith & all: let me redefine my confuse with Clojure. If I (:require [something.data :refer [save-record]), the function appears. It is totally detached from my protocol scoping. Are protocols just syntax sugar for function declarations, but every function ends up in the namespace in which it's defined?
09:19	dstockton	the advantage of elasticsearch is presumably that i could distribute the work if the data grew
09:19	dstockton	harder with sqlite
09:19	mavbozo	dstockton, if you want to put all those rows from the csv into clojure collections, you might want to experiment with datomic datalog https://gist.github.com/stuarthalloway/2645453
09:23	dstockton	mavbozo: unfortunately its not a clojure project
09:23	dstockton	im just stealing smarts from the clojure community
09:25	schmir	dstockton: I've done the same recently and used sqlite to import around 1GB csv files into sqlite
09:25	schmir	dstockton: worked like a charm
09:26	schmir	dstockton: but elasticsearch certainly is also a good choice
09:27	dstockton	sqlite definitely meets my needs for now, i was mostly thinking of future-proofing it
09:28	crazydiamond	Hi. Is there version of split, that preserves splitting elements? https://clojuredocs.org/clojure.string/split e.g. (split "q1w2e" #"\d+") to give ["q" "1" "w" "2" "e"] instead of just ["q" "w" "e"]?
09:29	dstockton	probably optimizing prematurely, if i use decent abstractions i can swap it later
09:43	oddcully	crazydiamond: something like (let [s "q1w2e" r #"\d+"] (interleave (clojure.string/split s r) (re-seq r s))) ?
09:43	crazydiamond	oddcully, cool, thanks!
09:44	crazydiamond	don't yet know all the stuff
09:44	oddcully	better wait what the gurus here have to say about it ;P
09:47	TMA	,(split "q1w2e" #"(\d\+)")
09:47	clojurebot	#error{:cause "Unable to resolve symbol: split in this context", :via [{:type clojure.lang.Compiler$CompilerException, :message "java.lang.RuntimeException: Unable to resolve symbol: split in this context, compiling:(NO_SOURCE_PATH:0:0)", :at [clojure.lang.Compiler analyze "Compiler.java" 6535]} {:type java.lang.RuntimeException, :message "Unable to resolve symbol: split in this context", :at [clo...
09:48	TMA	,(clojure.string/split "q1w2e" #"(\d\+)")
09:48	clojurebot	["q1w2e"]
09:48	TMA	,(clojure.string/split "q1w2e" #"(\d+)")
09:48	clojurebot	["q" "w" "e"]
09:49	TMA	perl uses capturing () to preserve the delimiters, a thing that was not carried over apparently :(
09:51	bja	I thought () in PCRE delimited groups?
09:52	bja	it certainly does in the python pcre implementation
09:52	chouser	This would be specifically for split, I think.
09:52	netroby	When will Clojure 1.7 will be released?
09:53	TMA	specifically perl's split /(\d+)/, "q1w2e" would exhibit the aforementioned behavior
09:55	chouser	TMA: Here's a fn from a deprecated lib that splits but also captures the delimiters: https://github.com/clojure/clojure-contrib/blob/13f960559f724521070d761639310d8b1f503216/src/main/clojure/clojure/contrib/string.clj#L208
09:56	chouser	Haven't tested it in ages, but it might still work. Dunno if that helps you or not.
09:58	TMA	crazydiamond: ^^
09:58	crazydiamond	thanks TMA and chouser
10:00	chouser	I don't know why that didn't make the transition from contrib to clojure.string. shrug
10:09	jcromartie	mavbozo: it seems to be missing from any of the official documentation, even the example usages
10:10	jcromartie	the example usages are even misleading, I'd say, because they look like examples of using a stateful object
10:10	jcromartie	but it's a wiki
10:10	jcromartie	so I can edit that, right
10:23	mavbozo	jcromartie, well, in the code comments there are phrases "returns a cache", "returns a new cache". But, I agree on more clarity on the usage.
10:45	andyf	netrobyatmobile: They announce when it is released, but do not promise any release dates in advance. My unofficial non-binding best guess: June 2015 or earlier. The list of things left to do is fairly short.
10:55	andyf	Here is Alex Miller?s list of things left to do before Clojure 1.7 release: https://groups.google.com/forum/#!msg/clojure/D2E4HG1yXBc/C34JWa8ylrQJ
10:57	phillord	andf: pity they don't have a issue called "write a description of transducers a normal person can understand"
10:57	phillord	andyf that is...
10:58	andyf	phillord: Have you watched Rich Hickey?s talk on it? I haven?t yet, but was hoping that would shed light on the topic for me, when I get around to it.
10:58	phillord	I've watched some of it, but not all
10:58	phillord	video's don't really fit into my life, which might be the problem
10:58	andyf	Until then, the short way I keep it in my head is "it is a performance optimization -- useful but not critical until and unless you need that performance"
10:59	Bronsa	andyf: it's not just about performance
10:59	andyf	Apparently I keep it in my head wrong, then.
10:59	Bronsa	I don't even think transducers are always faster than "normal" seq ops TBH
11:00	phillord	I do wonder how many problems are going to be introduced
11:00	phillord	I mean, calls that would previously given an arity exception will not return a transducers IIUC
11:00	andyf	Is it "often performance + unifying how to operate on sequences and core.async streams"? How would you summarize the benefits and reasons to create them?
11:01	andyf	phillord: That is true. Shows how much they wanted to add them :)
11:01	Bronsa	andyf: s/sequences and core.async.streams/reducibles/
11:01	Bronsa	IIUC
11:01	phillord	seems like a pretty overloaded return type to me
11:02	phillord	but yes, clearly, they really cared about them
11:02	phillord	I would have prefered they spent the time on rewriting the docstrings but hey
11:03	Bronsa	phillord: I'm not a fan of that overloading either and have complained about it when transducers were first introduced. Core is set on making them clojure.core citizens so I don't think there's a chance that will change
11:03	andyf	There is ClojureDocs for anyone that wants to for enhancing the doc strings. Has been for years. Do not wait for the core team to rewrite the doc strings. Make it happen!
11:04	andyf	Plus, by making it happen yourself, you find out how time-consuming it can be :)
11:05	sandbags	as someone who is, a little painfully, using CLJX wondering what the wisdom of the group was on the reader conditions in alpha6?
11:06	andyf	Depending upon your pain points, they may help, they may not.
11:06	dnolen	Bronsa: I've never seen seq ops be faster than transducers unless your talked about chunked seqs, also seq ops presume really good GC, while enjoyed on prduction JVMs may or may not be true for CLR or JS
11:06	sandbags	so far mainly process and tooling support, i guess having everything baked in will alleviate those
11:07	phillord	andyf: sure, I agree -- I think thalia was a notable push in the "better documentation" category
11:07	andyf	Some tooling may need updating to support them -- depends upon the tool.
11:08	andyf	phillord: And there isn't much there, and it took quite a bit of digging and experimenting to get even that little bit written.
11:08	dnolen	andyf: as Bronsa said transducers not just about perf, they are functional operations decomplected from application strategy
11:08	Bronsa	dnolen: definitely the case of chunked seqs -- haven't done any benchmarks myself but I recall puredanger talking about it
11:09	phillord	andyf: I agree, but it does show the necessity and that it can be much better
11:09	chouser	dnolen: any sense of reader conditionals timeline for clojurescript?
11:10	phillord	dnolen: I've seen that written before, but I just don't understand what it means. It sounds really nice, but I have no idea what it is for.
11:12	sobel	can i write a transducer in clojure 1.6?
11:12	sobel	or is that a waiting-for-1.7 thing
11:13	chouser	hm, if transducers were completely decoupled from "application strategy", wouldn't that mean that they could deliver the same semantics as lazy seqs? The fact that they can't suggests they provide an alternative and perhaps more open and efficient application strategy.
11:20	andyf	sobel: No need to wait if you are willing to try out 1.7.0-alpha6. It may be possible to write one with 1.6, but you would need to implement some groundwork yourself.
11:21	sobel	andyf: i'm willing to burn a couple cycles on 1.7-a to try them out. i already found the examples i'd seen on blogs would not work with 1.6 unmodified.
11:21	sobel	thx
11:24	matthavard	Does anyone know of a code snippet example where reduce is called with reduce as the second parameter?
11:24	matthavard	`(reduce reduce <init> <coll>)`
11:25	sobel	unclear how the outer call would have anything to reduce
11:26	matthavard	Yeah I don't know how it would work either
11:27	matthavard	<init> would have to be a function I think....
11:28	matthavard	Okay I got a lame one working
11:28	matthavard	,(reduce reduce + [[1]])
11:28	clojurebot	1
11:28	matthavard	,(reduce reduce + [[1 2 3]])
11:28	clojurebot	6
11:29	sobel	,(apply reduce + [[1 1]])
11:29	clojurebot	2
11:29	sobel	same
11:29	Glenjamin	chouser: i think you can build lazy-seqs on top of transducers
11:29	sobel	reduce only destructured for you
11:29	Bronsa	Glenjamin: not preserving the same characteristics
11:30	Glenjamin	the way they compose, you mean?
11:30	matthavard	Yeah because it was passed + and then the first element of [[1 2 3]] which is [1 2 3]
11:30	Glenjamin	or the caching and laziness bit?
11:30	Bronsa	Glenjamin: lazy-seq ops can consume 0 elements, transducers need at least 1
11:30	Glenjamin	oh, interesting
11:31	matthavard	~(+ 1 2)
11:31	clojurebot	Huh?
11:31	matthavard	Why does clojurebot eval if you use a comma when clojure evals if you use a tilda?
11:31	mikerod	Does cljs require Java 7 now?
11:31	mikerod	I always get "Caused by: java.lang.UnsupportedClassVersionError: com/google/javascript/jscomp/CompilerOptions : Unsupported major.minor version 51.0"
11:31	justin_smith	matthavard: ~ is for commands, , is for clojure code
11:31	mikerod	for cljs projects when I have Java pointed at Java6
11:32	matthavard	justin_smith: What commands can I do with ~?
11:33	justin_smith	matthavard: factoid related commands are pretty much it I think
11:33	justin_smith	~books
11:33	clojurebot	books is book
11:33	justin_smith	~book
11:33	clojurebot	book is http://www.pragprog.com/titles/shcloj/programming-clojure
11:33	justin_smith	~books
11:33	clojurebot	books is book
11:33	justin_smith	erg.
11:33	justin_smith	there is also a books answer
11:33	justin_smith	but the factoids are annoying
11:34	dnolen	phillord: some things in Clojure take some time to understand, and documentation beyond anything official (tutorials, books). I think it took a year before I really understood lazy seqs - I don't really see this as is problem though.
11:35	dnolen	chouser: Alex Miller is cranking on that, hopefully tools.reader patch drops today/tomorrow, and then ClojureScript just needs some small tweaks
11:35	dnolen	chouser: the next big release of ClojureScript is waiting on just this
11:35	mavbozo	~book
11:35	clojurebot	book is http://www.pragprog.com/titles/shcloj/programming-clojure
11:35	mavbozo	~book
11:36	clojurebot	book is http://clojurebook.com/ http://joyofclojure.com/
11:37	matthavard	~macros
11:37	clojurebot	Barking spiders!
11:37	matthavard	~macro
11:37	clojurebot	macro are just a game with symbols
11:37	matthavard	~book
11:37	clojurebot	book is http://www.pragprog.com/titles/shcloj/programming-clojure
11:37	matthavard	~~
11:37	clojurebot	Titim gan éirí ort.
11:37	matthavard	~~
11:37	clojurebot	Excuse me?
11:37	mavbozo	~educe
11:37	matthavard	~~
11:37	clojurebot	educe is a typo
11:37	matthavard	~~
11:38	matthavard	~clojure
11:40	csd_	Is it right to think of Manifold as a competitor to core.async?
11:40	justin_smith	csd_: check out ztellman's talk from the last conj
11:41	justin_smith	manifold is compatible with core.async, but he compares the two (and also prismatic/plumbing)
11:42	csd_	justin_smith: the talk titled Always Be Composing?
11:42	justin_smith	yes
11:43	chouser	dnolen: fantastic, thanks!
11:44	sobel	that was a great talk
11:44	sobel	i'll have to use more core.async before i'm receptive to manifold, i think, though
11:58	csd_	is there a curated list of the best conj talks
12:02	bja	are #inst meant to work with org.clojure/java.jdbc as ISQLValues out of the box?
12:03	bja	i.e. (jdbc/query db ["SELECT ?;" #inst "2015-04-07T15:54:15.497000000-00:00"])
12:10	sobel	~.
12:10	sobel	cs csd oaeu
12:10	clojurebot	Cool story bro.
12:11	sobel	apparently ^Q still horks up terminal emulators :/
12:11	sobel	csd_: i forget the name offhand but there's an easy to find youtube channel with most the good talks on it
12:11	justin_smith	sobel: it doesn't hork anything, it does exactly what the vt100 spec says it should
12:11	sobel	but ask here for specific topic advice. i think that's more useful than drinking from the firehose.
12:11	sobel	justin_smith: you're not wrong
12:12	justin_smith	sobel: I mean, imagine if I went into my GUI apps and my emacs muscle memory led to me using Control-w instead of Control-c to copy. Should I be surprised that this closes my document?
12:13	justin_smith	s/copy/cut of course
12:13	oddcully	justin_smith: that's not only emacs musclememory, but terminal. at least there is a hook to fix gtk apps
12:14	justin_smith	one that I do all the time: Control-p to go up, and then I get a print dialog.
12:14	sobel	justin_smith: i have no idea what you are talking about. i bound all my GUI apps to emacs bindings a long time ago. ;)
12:14	justin_smith	like, who actually prints so often that they need a keyboard shortcut for it?
12:14	sobel	haha
12:14	sobel	dongetmestarted
12:15	oddcully	in (old?) IEs ESC in a textarea just removed the text
12:15	justin_smith	haha "fuck you vi users we hate you"
12:15	sobel	but really, my tacit assertion here is, why the fuck are we still emulating terminals so literally? (don't answer that)
12:15	justin_smith	sobel: software that was invented to run on terminals is still useful
12:16	justin_smith	in 100 years we will be asking why 2d apps are still emulated
12:16	sobel	like the irssi/tmux combo i use to get here?
12:16	justin_smith	:)
12:16	sobel	upgraded from bX+screen from the olden days
12:17	justin_smith	hell, our programming languages are still 1 dimensional, with a few notable exceptions
12:17	sobel	there's plenty of good argument for them staying that way, too
12:17	justin_smith	indeed
12:18	sobel	i still play MAME. i shouldn't be allowed to comment on future emulation of 2d apps. :)
12:24	bja	can I "unextend-protocol"?
12:24	bja	(in a way other than restarting my jam)
12:26	justin_smith	~v1.8 is my jam
12:26	clojurebot	Roger.
12:27	justin_smith	sorry, couldn't help it
12:27	zerokarmaleft	justin_smith: ugh, that gets me so often (ctrl-p)
12:29	zerokarmaleft	often enough that I'm now realizing I should've found a way already to disable that shortcut
12:31	oddcully	zerokarmaleft: for gtk there is a config for all apps. e.g. my firefox just moves the cursor up on ctrl-p, ymmv
13:01	bja	I think I'm going nuts. (doto (.prepareStatement (jdbc/get-connection db-spec) "SELECT ?") (.setTimestamp 1 (java.sql.Timestmap. (.getMillis (clj-time.core/now)))) .execute) throws "PSQLException ERROR: could not determine data type of parameter $1" with the org.postgresql.Driver
13:02	darthdeus	is there a talk somewhere about component/jig?
13:16	sobel	bja: if that's literal code, you might adjuste "Timestmap" to "Timestamp"
13:16	sobel	adjuste, oe.: Adjust
13:17	bja	err, not literal code, sorry about that
13:17	bja	the thing is, this works with sqlite3
13:17	justin_smith	brb. must adjuste my Timestmaps
13:17	sobel	(inc justin_smith)
13:17	lazybot	⇒ 234
13:17	sobel	(inc justin_smith )
13:17	lazybot	⇒ 9
13:18	Glenjamin	maps for estimating tim
13:18	sobel	oof
13:18	Glenjamin	darthdeus: there was one at clojureX 2014
13:19	Glenjamin	i think, or maybe it was EuroClojure
13:19	Glenjamin	one of those, anyway
13:20	bja	is there some function or macro that will invoke javac on a string for me?
13:20	bja	I basically want to eval some Java
13:29	sm0ke	pmonks: java can be used with 99% ease from clojure
13:30	pmonks	Right, but bja wants to eval a string as Java source.
13:30	pmonks	I guess what you could do is throw the string at Groovy.
13:30	pmonks	Most Java is also valid Groovy, and Groovy includes a full interpreter*
13:30	pmonks	* on-demand compiler
13:31	justin_smith	bja: if javac is present on the machine, there is also the possibility of shelling out
13:31	justin_smith	bja: what do you need to do at runtime with java that clojure couldn't do?
13:31	bja	oh, nothing for production. I just wanted to test a java code sample I could ask about on #postgresql
13:32	bja	since nobody responds favorably to questions posed using clojure
13:32	justin_smith	bja: in that case, why not make a tiny java file and compile and run it?
13:33	pmonks	bja: I use the Groovy shell for that kind of thing
13:33	pmonks	Basically a glorified Java interpreter.
13:33	pmonks	Very handy (even though Groovy itself leaves me with an unclean feeling).
13:34	bja	I just wanted to avoid doing that outside of my repl. I was hoping to be able to (./pull 'magic-java-compiler) (require '[magic-java-compiler.core :refer [javac]]) (javac "$BORINGJAVAHERE")
13:34	bja	I'll try groovy
13:35	pmonks	Yeah I think it'll work ok, even if it's a bit of a hammer to crack a nut. ;-)
13:36	pmonks	Here's a Java example that should be pretty directly portable to Clojure: http://stackoverflow.com/questions/20905980/how-can-i-evaluate-my-own-groovy-script-from-java
13:37	bja	I think there's something weird with the way I have org.postgresql.Driver setup (or a bug with it), since .setTimestamp(idx, java.sql.Timestamp-instance) works fine for mysql and sqlite3
13:38	oddcully	also be aware, that groovy is not 100% java code compatible
13:40	pmonks	Yeah - the biggest issue I've had with (ab)using it this way is with some identifier names. Groovy has more keywords etc. so some valid Java identifiers names are not valid Groovy.
13:40	pmonks	But in practice I run into problems pretty rarely, and for small Java snippets are easy to fix.
13:41	oddcully	yeah most likely lists in @SomeInterface will trip you over. the keywords are not to many (in, trait, ?)
13:42	pmonks	Bit more background: http://blogs.alfresco.com/wp/pmonks/2010/08/19/alfresco-and-groovy-baby/
13:43	oddcully	* pmonks is now known as austin
13:44	oddcully	my main groovy visual is Ash
13:45	justin_smith	am I old? is this is what it's like when you are old? I have no idea what any of these references are.
13:46	pmonks	Or young. ;-)
13:46	pmonks	http://www.imdb.com/title/tt0118655/
13:47	oddcully	pmonks: guess so ;P
13:47	justin_smith	oh damn, I saw it so long ago that the references went over my head
13:47	justin_smith	haha
13:47	oddcully	and this for Ash: http://www.imdb.com/title/tt0083907/
13:47	justin_smith	wait, I know ash, but how did it tie in here?
13:48	pmonks	Peter Jackson's 2nd best movie: http://www.imdb.com/title/tt0103873/
13:48	oddcully	iirc its somewhere in part three. something with the boomstick or the chainsaw
13:48	oddcully	and Ash says: Groovy!
13:48	oddcully	i bet there are even tshirts about it
13:48	justin_smith	pmonks: Meet the Feebles was damned good too
13:48	pmonks	That's #1. ;-)
13:48	pmonks	(inc justin_smith)
13:48	lazybot	⇒ 235
13:49	justin_smith	oddcully: oh man, yeah, I am not hip to the right quotes despite having seen all these things
13:49	justin_smith	I think its what happens when you've seen too many movies
13:49	bja	I put up a sample project here: https://github.com/emidln/clj-pg-jdbc-weirdness/blob/master/src/sample/core.clj. Am I just doing something blatently wrong?
13:49	justin_smith	if I try to quote movies I sound like a hipper-than-thou asshole because its stuff nobody has seen (not on purpose, mind you)
13:50	oddcully	stuff like: it's time to kick a** and chew bubblegum... and i am all out on bubblegum
13:50	AimHere	That can still work if the quotes are apposite enough
13:51	pmonks	"I love the smell of napalm in the morning."
13:51	AimHere	Just don't let on that they're quotes, and people will think you've got a good epigram
13:51	justin_smith	AimHere: oh yes, then people think I have a very clever and absurd sense of humor.
13:51	pmonks	"You're all individuals!" "(mob) We're all individuals!" "(lone voice) I'm not." <- best movie quote ever
13:51	oddcully	just use them often enough and the kids will pick it up
13:51	justin_smith	AimHere: had a hilarious experience where I was riffing on Laurie Anderson lyrics with a friend, and another friend starts improvising weird statements in that style because he didn't know any of the quotes, it was great
13:52	justin_smith	(inc pmonks)
13:52	lazybot	⇒ 4
13:52	AimHere	Your other friend is the one with the imagination I take it!
13:52	justin_smith	haha
13:52	oddcully	:D
13:52	justin_smith	AimHere: he may have also been high
13:53	justin_smith	bja: lest you think you are being ignored, I am digging up a project with psql configured to see if I can help out
13:54	ncthom91	hi all. Anyone have any good suggestions for a short hashing function which produces a short unique id given a long string input?
13:55	bja	justin_smith: thanks. I have more configuration, but all of that appears to work okay (extending protocols like jdbc/ISQLValue to convert jodatime, json conversions to/from, etc). This is just distilled to the basic jdbc interop that for whatever reason doesn't appear to be working for me.
13:55	pmonks	,(.hashCode "This is where the long string would go")
13:55	clojurebot	-1611456038
13:55	pmonks	ncthom91: not sure if that's what you're after
13:56	justin_smith	ncthom91: for certain values of "unique" (see Shannon, information theory, etc.)
13:56	bja	I'm pretty sure I have to be doing something wrong because surely .setTimestamp actually works
14:00	timvisher	is there an analog to the :destroy handler for `lein ring` for in-process http-kit instances?
14:02	lemonodor	I’m reading https://github.com/technomancy/leiningen/blob/master/doc/PROFILES.md#declaring-profiles and wondering if it’s possible to have user-wide profiles that will override profiles of the same name specified in a project.
14:02	justin_smith	bja: so, here it generates "SELECT '2015-04-07 11:03:28.285000 -07:00:00'"
14:03	lemonodor	it looks like no, user-wide profiles are overridden by project profiles, i would need a system-wide profile. is that correct?
14:03	justin_smith	bja: and I get the same error, yeah
14:04	bja	timvisher, I do that as part of my http-kit component.
14:04	justin_smith	bja: I guess jdbc is generating a timestamp format that postgres doesn't like, or at least finds ambiguous?
14:05	bja	justin_smith. it seems that way. I don't know how I didn't notice this happening before. I think maybe I need to go back and test older versions to the driver to see if this a regression.
14:06	justin_smith	bja: clearly it affects both our drivers... one moment, checking what we do with date/time types in Caribou fields
14:07	lemonodor	basically i want to say ‘use [cider/cider-nrepl "0.9.0-SNAPSHOT”]’ for everything by putting it in my profiles.clj, but that doesn’t work if i have a project that uses, e.g., lein-gorilla which has a dependency on cider-nrepl 0.8.1.
14:09	bja	lemonodor: can you exclude in your profile?
14:09	bja	the key is :exclusions
14:10	lemonodor	bja: in my profiles.clj? what would i exclude? cider-nrepl 0.8.1?
14:10	bja	cider-nrepl
14:11	bja	:exclusions [cider-nrepl]
14:11	bja	you could also add it to lien-gorilla
14:11	timvisher	bja: in what way?
14:11	lemonodor	ah, right. man, someday we’ll figure out how to do node-style versioning, but even better.
14:12	bja	timvisher: https://gist.github.com/add4a2d31fb84977f911
14:13	justin_smith	bja: as a starting point, this executes without error -- "SELECT TIMESTAMP '2004-10-19 10:23:54'"
14:13	timvisher	bja: very cool! thanks!
14:14	bja	timvishner, the general idea is that you have to hold onto the fn that http-kit returns somewhere
14:14	bja	and your restart/stop functions can do something prior to calling it
14:14	timvisher	bja: yep. makes sense.
14:14	bja	you don't need a full-blown component system if you don't want it (although it's sweet)
14:15	timvisher	can i access active profiles from my system when running with `lein run`?
14:15	timvisher	s/from my/in my/
14:23	justin_smith	timvisher: what does 'access active profiles' mean? if you mean get info about which profiles are active, environ is a great way to convey that to the runtime
14:23	timvisher	justin_smith: yeah. that's what it looks like
14:23	justin_smith	timvisher: idea being you can set environ values per profile, then you can detect profiles via them
14:23	timvisher	i was looking for a simple way to see if the dev profile was active
14:23	justin_smith	timvisher: environ is the simple way
14:23	timvisher	that's what it looks like
14:24	justin_smith	something like (defmacro when-dev [& body] `(when (env :dev) ~@body))
14:25	justin_smith	and then :profiles {:dev {:env {:dev true}}}
14:29	vas	So I have my handler take requests that go to tings like /post51762 and find the post with the eid 51762 in datomic, but if it doesn't exist I want to capture the exception .. do a 404 page... any tips on learnin' meself some exception handling?
14:29	justin_smith	vas: you could try
14:29	justin_smith	yuck yuck yuck
14:29	justin_smith	(doc try)
14:29	justin_smith	it's pretty simple
14:29	clojurebot	Cool story bro.
14:30	justin_smith	$grim clojure.core/try
14:30	lazybot	http://grimoire.arrdem.com/1.6.0/clojure.core/try
14:30	justin_smith	vas: I think the examples in above link will get you going
14:33	vas	justin_smith hehehe Try.
14:33	vas	+ thanks
14:57	bja	justin_smith: I filed a bug report on the postgresql jdbc github page: https://github.com/pgjdbc/pgjdbc/issues/276
15:01	sritchie	dnolen: can I test against a pattern and bind it in core.match? for example, I can do ([(:or 'F 'T)] :seq)
15:01	sritchie	but how about ([(:or 'F 'T) :as x] :seq) or something
15:02	dnolen	sritchie: that should work yes
15:02	dnolen	though the syntax is not right there
15:02	dnolen	((:or 'F 'T) :as x)
15:03	sritchie	I get “unable to resolve x"
15:03	sritchie	(match (list 'F) ([((:or 'F 'T) :as x)] :seq) x)
15:03	sritchie	works without the :or
15:03	chouser	is there a Right Way to detect, during macroexpansion, whether you're being invoked by the Clojure vs the ClojureScript compiler?
15:03	sritchie	dnolen: (match ['F] [('F :as x)] x)
15:04	Bronsa	chouser look at &env
15:04	dnolen	sritchie: could be a bug
15:04	sritchie	chouser: https://gist.github.com/sritchie/140200c0c9d013c0438b
15:04	sritchie	that works for em
15:04	sritchie	me*
15:04	sritchie	dnolen: okay, I’ll file
15:05	dnolen	sritchie: thanks
15:05	chouser	Bronsa, sritchie: thanks.
15:09	nkoza	there is some library like core.match but with first-class patterns, so you can compile a bunch of them to a fast dispatch table in runtime... and also working in cljs? (yes, I want also the sky :))
15:10	timvisher	how can i get verbose errors from lein uberjar? it's failing during compilation but not telling me where
15:13	zamaterian	The terminal feature in neovim bloody usefull :)
15:23	bja	zamaterian: waiting for someone to give me a more compelling story than vim+vim-slime+tmux for my vim+clojure development
15:29	oddcully	bja: tmux+vim/fireplace?
15:32	zamaterian	bja: just a fast desc : https://gist.github.com/zamaterian/dfbafbeef178daf5c21b
15:35	bja	oddcully: I used that for awhile, and realized that I didn't really need/want it very often. I use vim-sexp to select forms and send them via slime to a repl in a different tmux pane
15:36	bja	which, despite the assertions of the vim-fireplace author, is exactly what I want
15:37	oddcully	bja: i also run my repl in another tmux window and then just :Eval or cpp them over
15:39	zamaterian	bja, it should be pretty easy, to replace the fireplace functions in my example. One more reason that I use fireplace is that its omnicomple func work nicely together with YouCompleteMe
15:39	gastove	I'm having a brain-dumb. Is there a straight-forward way to go from a clojure vector of a type ([Foo, Foo, Foo]) to a java array of the same type (Foo[])?
15:47	justin_smith	gastove: into-array
15:47	justin_smith	,(into-array [1.0 3.0])
15:47	clojurebot	#object["[Ljava.lang.Double;" "[Ljava.lang.Double;@49cb4acf"]
15:48	justin_smith	gastove: it takes an optional argument if you want to override the type of the first arg
15:48	justin_smith	,(into-array Number [1.0 3.0])
15:48	clojurebot	eval service is offline
15:48	justin_smith	&(into-array Number [1.0 3.0])
15:48	lazybot	⇒ #<Number[] [Ljava.lang.Number;@45a836ff>
15:54	borkdude	Today another clojurescript / clojure app I worked on for the last two months went into production. the first serious one for an external customer. Thanks to the peeps in this channel who helped me out with some problems/decisions. Especially ordnungswidrig for his help with liberator.
15:55	borkdude	First serious one that is entirely in clojure/clojurescript. We've done clojure backend before for another customer.
15:55	dnolen	borkdude: congrats! :)
15:56	borkdude	dnolen thanks. :)
16:00	muraiki	w00t!
16:02	wackadignhoy	hi
16:02	wackadignhoy	should all functions with logging get wrapped in a do?
16:02	gastove	justin_smith: ahhh. Thanks!
16:03	borkdude	wackadignhoy functions have an implicit do already
16:04	wackadignhoy	hum. Interesting. So what is do for, then?
16:06	justin_smith	wackadignhoy: for things like if that don't
16:06	justin_smith	and then you use do, and it do
16:07	wackadignhoy	ok. so it's to avoid having to construct a bunch of annon functions for instances like 'if'?
16:08	justin_smith	yeah - I mean an anon function would be a really roundabout way to do multiple things in one if branch
16:08	justin_smith	so yeah
16:10	TimMc	clojurebot: and then you use do, \|and\| it do
16:10	clojurebot	A nod, you know, is as good as a wink to a blind horse.
16:12	wackadignhoy	thanks, justing_smith and borkdude
16:20	oddcully	sometimes the zen quotes of clojurebot are just overwhelming
16:20	sritchie	what’s the right syntax for applying a precondition to an anonymous fn?
16:20	sritchie	ah, got it
16:20	sritchie	(fn [x] {:pre [(odd? x)]} (* x x))
16:20	justin_smith	(fn [a] {:pre [(even> a)]} ...)
16:20	justin_smith	yup
16:21	danielglauser	(inc sritchie)
16:21	lazybot	⇒ 2
16:21	danielglauser	Didn't know that, cool
16:23	sobel	so, when i was learning sql, knew there were always lots of ways to accomplish something but few of them would be very performant. once i could reason about the combinatorics, i/o costs, and generally understand the challenges the query planner faces, i could write much more effective and clean queries
16:24	sobel	but once i figured that out, the path was fully documented, etc. is there a similar vein of learning for lisp/clojure?
16:24	sobel	i can generally do what i want several ways with clojure, but i have no sense of relative merit
16:24	sobel	(it's ALL better than writing java)
16:25	oddcully	what's not?
16:25	justin_smith	sobel: I think following discussion on this channel is very helpful for that
16:25	justin_smith	sobel: plus, learning how to use the jvm profiling tools
16:25	aaelony	sobel: I think the only way to know is to profile the code you are interested in...
16:25	justin_smith	yupyup
16:25	sobel	justin_smith: i follow and pitch in when i can. i think i might have helped someone today, which is a nominal milestone
16:26	sobel	ok, i hear profiling.
16:26	justin_smith	aaelony: well, there are certain things you can figure out - like certain constructs always requiring reflection, so they have an alternate form that always performs much better
16:26	szatz	can anyone offer suggestions regarding getting an exception that says "Too many files open" using the clojure.data.csv library?
16:26	aaelony	justin_smith: I agree, but premature optimization is something to consider as well
16:26	sobel	i know some of the obvious things to avoid, especially when they are familiar from java like reflection performance
16:26	justin_smith	sobel: also, in general a lot of the best performing stuff revolves around reduce and its variants (transducers, reducers)
16:27	sobel	i think i am on a better track than i thought, before i asked
16:28	sobel	thanks
16:28	justin_smith	also, there is a whole labrynth of stuff to learn about the lazy functions (especially in my experience concat and range), where they can help make code that performs well much simpler, but you can hit some real landmines too
16:29	bja	justin_smith: so apparently the jdbc pg driver doesn't propagate type information it learns to the backend. So saying s=conn.prepareStatement("SELECT ?"); s.setTimestamp(int, Timestamp) doesn't communicate to PG that the ? is a ::timestamp, although it apparently does for MySQL and Sqlite3
16:29	justin_smith	bja: fascinating - is that a bug?
16:29	bja	Dave Cramer (maintainer) seems to think it is not
16:30	sobel	oddly, working with Oracle has helped me connect some ideas between databases and clojure. it is pretty overt about sequences, lazy sequences, and related data/data structure issues.
16:30	justin_smith	bja: what's the justification?
16:30	bja	I didn't really get one. https://github.com/pgjdbc/pgjdbc/issues/276
16:30	sobel	that makes sense
16:31	sobel	it tried to prepare a statement without knowing the type, and predictably failed
16:31	justin_smith	bja: "basically we hate the people using our library and want using to be a terrible experience"
16:31	justin_smith	bja: so the solution is to explicitly use the one with or without the timezone?
16:32	sobel	if you were using a method that did not prepare the statement, but instead executed "SELECT '2015-04-07'::date" or even without the typecast it would be a different deal
16:32	justin_smith	hmm, what about SELECT ?::date"
16:32	justin_smith	err, bad parens there obviously
16:32	sobel	sure
16:33	bja	SELECT ?::datetime works
16:33	sobel	then you have supplied the type hint in the query, so good
16:33	sobel	also, nominally o/t, always use timestamp with time zone. never use without timezone.
16:33	bja	yeah, but I was originally under the impression that since I told JDBC that it's a Timestamp that it should have indicated that to postgresql for me. I was wrong.
16:33	sobel	unless you just hate your data and hate people that will have to use it
16:34	bja	I mean, you get the same error if you indicate a time zone too
16:34	sobel	yes, but only when you're counting on it sending that type info to the backend which doesn't happen
16:35	sobel	i'm talking about general cases of table design. don't use without timestamp. you'll be sorry. :)
16:35	justin_smith	bja: "ERROR: type "datetime" does not exist"
16:35	bja	err, timestamp
16:35	bja	sorry
16:35	justin_smith	OK
16:35	bja	SELECT ?::timestamp
16:35	sobel	i believe the postgresql type is timestamptz
16:35	irctc_	can someone help me with the clojure.lang.PersistentQueue/EMPTY exercise
16:36	justin_smith	OK "SELECT ?::timestamptz" totally worked
16:36	justin_smith	irctc_: exercise?
16:37	bja	I'm also unsure how to indicate to clojure.jdbc that I want it to invoke .setTimestamp(int, timestamp, calendar) as opposed to .setTimestamp(int, timestamp) for my #inst
16:37	irctc_	I have this function from joy clojure and don't know what the w refers too: (defmethod print-method clojure.lang.PersistentQueue [q w] (print-method '<- w) (print-method (seq q) w) (print-method '-< w))
16:37	bja	err, clojure.java.jdbc
16:38	justin_smith	irctc_: print-method takes a "writer" arg - the thing to write to
16:38	patrickgombert	irctc_: it refers to the writer
16:38	justin_smith	(doc print-method)
16:38	clojurebot	"; "
16:38	justin_smith	:(
16:38	irctc_	Thank you :-)
16:38	patrickgombert	irctc_: the writer is typically going to be out
16:39	irctc_	Thanks, I needed that clarification.
17:34	caryme	I have a large lazy sequence of chars. I want to use a java library that requires I pass a java.io.Reader or java.io.InputStream. is there a good way for me to transform that lazy sequence of chars to a Reader (or inputstream)?
17:38	amalloy	honestly i'm not aware of anything very good, caryme. we did kinda a mediocre version of this for streams in flatland/io, which you could adapt to readers: https://github.com/ninjudd/io/tree/develop/src/flatland/io/core
17:39	amalloy	basically wrote an adapter in java, to turn java.io's stream hierarchy into an interface thing instead of inheritance thing, so that it was easy to provide implementations of streams in clojure
17:39	amalloy	then you could use that to write a reader that's backed by (atom some-lazy-seq)
17:40	caryme	thanks amalloy, Il'l check that out
17:53	sobel	what's the easiest way to integrate a clojure generated class into a java build based on eclipse/maven?
17:55	sobel	minimum-footprint is ideal. i'm willing to write regular java to keep clojure-y tools out of the build. i am taking enough risk to add a jar (clojure.jar) to the mix already.
17:56	sobel	it seems my standalone executable clojar distribution method won't cut it, after all
17:58	vas	So when you guys deploy your apps to the intarwebz do you (always?) make an uberjar and go from there?
18:01	sobel	...working on delivery of my first commercial clojure this very moment. so far it's an uberjar but i might have to gen a class and drop it in to a traditional servlet project.
18:02	sobel	anywho, ideally i might even want to paste the clojure src into a class that compiles it at runtime
18:03	sobel	it's not a clojure app. this is pretty much a batch-job extension.
18:04	sobel	unrelated: has anyone dumped clojure.jar on their oracle server and written server-side clojure as stored proc?
18:04	sobel	nevermind, my coworkers would get pitchforks
18:11	rmarianski	sobel: you can use clojure.lang.rt from java
19:23	kaiyin	how do you solve this exception in repl? (use 'clojure.data.json ) IllegalStateException pprint already refers to: #'clojure.pprint/pprint in namespace: tincanter.core clojure.lang.Namespace.warnOrFailOnReplace (Namespace.java:88)
19:40	bbloom	so i've got a new machine here & `lein repl` just won't start
19:40	bbloom	or rather it takes like ~3 minutes to start
19:41	arrdem	foo??
19:41	lazybot	arrdem: Uh, no. Why would you even ask?
19:42	arrdem	foo?!
19:43	arrdem	foo!?
19:44	noonian	kaiyin: try (require '[clojure.data.jsoin :as json]); the warning is because clojure.data.json defines its own pprint function and clojure.pprint/pprint is automatically required and refered in the default repl
19:44	kaiyin	cool, thanks.
19:44	noonian	note my typo in the lib name also :P
19:45	noonian	then you would access the json pprint with json/pprint
20:22	darthdeus	are people using jig? seems it hasn't been updated in a while
20:35	pcn	If I have a list and I want to pass it to a function that takes varargs like (defn foo [a & b]), I know I can take (first input-list) and pass it as a, but how do I turn (rest input-list) into the arguments for the function?
20:37	pmonks	,(doc apply) ; not sure ?
20:37	patrickgombert	pcn: you could just (apply foo input-list)
20:37	pcn	Ah,thanks!
20:37	patrickgombert	np
20:37	clojurebot	"([f args] [f x args] [f x y args] [f x y z args] [f a b c d ...]); Applies fn f to the argument list formed by prepending intervening arguments to args."
20:38	pcn	Wow, that's such an interesting construct
21:32	bja	kaiyin, did you get an answer?
21:55	bmaddy	I'm trying to get cider working with emacs (again). Does anyone know what this error means? The lein executable (specified by `cider-lein-command' or `cider-boot-command') isn't on your exec-path
22:11	justin_smith	bmaddy: your shell env isn't visible to point an xlick gui apps
22:12	justin_smith	bmaddy: start emacs from a tty, or manually set up emacs' path
22:14	justin_smith	bmaddy: emacs' path can be set with the setenv function (altering PATH of course)
22:16	bmaddy	Well, it does seem to start up when I just do plain emacs. Aqumacs must be the problem.
22:17	bmaddy	I mean, environment stuff, like you said.
22:17	justin_smith	yeah, not an infrequent issue on osx
22:18	justin_smith	you can set your default env but the osx way is weird
22:19	justin_smith	easier to start from a shell prompt
22:19	bmaddy	Interesting, I'll try starting aquamacs from a prompt...
22:20	justin_smith	you may need the "open" command
22:21	justin_smith	iirc (I am a happy migrant back to linux land)
22:25	amalloy	clojurebot: Aquamacs \|must be\| the problem.
22:26	clojurebot	Ack. Ack.
22:35	timvisher	anyone have a good comparison between http-kit and jetty?
22:35	timvisher	i'm trying to write up what the tradeoffs are between them
22:35	timvisher	http-kit can achieve far higher through put because async i/o?
22:47	arrubin	timvisher: http-kit appears to use Netty. You will probably have more luck finding comparisons of Jetty and Netty.
22:48	timvisher	arrubin: my understanding is that it is inspired by netty but not actually implemented with it
22:48	arrubin	timvisher: Check the project file.
22:48	timvisher	arrubin: and i went down that route as well and was surprised to not find much information on it
22:49	arrubin	https://github.com/http-kit/http-kit/blob/master/project.clj
22:49	arrubin	[io.netty/netty "3.6.5.Final"]
22:49	timvisher	heh. yep :)
22:49	timvisher	wonder when that happened
22:49	timvisher	jetty vs netty seems mostly to talk about async vs. sync support, but jetty 7 even seems to support async
22:50	arrubin	Jetty implements the servlet spec.
22:50	arrubin	Netty is more of a library to implement such things.
22:50	timvisher	so i'm wondering if jetty has evolved to support async i/o since netty came out
22:50	timvisher	certainly jetty has been far more widely used
22:51	timvisher	jetty 9 for instance only use nio
22:51	arrubin	Chances are that your needs will not make either break a sweat.
22:52	arrubin	Your bottlenecks are almost certainly elsewhere, if there is even a problem.
22:53	timvisher	arrubin: also, seems like http-kit only uses netty in it's tests https://github.com/http-kit/http-kit/search?utf8=%E2%9C%93&q=netty
22:53	timvisher	arrubin: i'm sure of that, but i'm tasked with evaluating them. it's looking like jetty is the obvious choice
22:53	timvisher	which is slightly surprising to me because i felt like http-kit has been sweeping the clojureverse since it came out
22:55	timvisher	arrubin: do you think you could say what the banner differences are between jetty and http-kit?
22:55	timvisher	certainly jetty 7 is probably more out of date than http-kit (for some value of out of date) but there's also a jetty9 adapter which would bring in jetty 9
22:58	arrubin	timvisher: Sorry, I have not used http-kit. I assume that it does not implement the servlet spec. They seem designed for different purposes.
22:59	timvisher	arrubin: ok. in terms of clojure and running an embedded jetty server which is then run from `java -jar`, am i even using the servlet spec?
22:59	timvisher	admittedly i'm fairly uneducated when it comes to servlets
23:06	ncthom91	hey y'all. Is there a cleaner way to do something like this? http://pastie.org/10079510
23:06	ncthom91	I just want to replace the second element in each match with the result of applying that element to `fib`
23:07	amalloy	(set (map #(update-in % [1] fib) matches))?
23:12	arrubin	timvisher: I honestly do not know. I am only a Clojure dabbler.
23:14	arrubin	Are you using Ring with the Jetty adapter?
23:37	tbaldridge	timvisher: one thing I've heard mention more than once by Clojure devs, is that they trust the implementation of Jetty over the implementation of http-kit. In fact I don't know that I've ever seen http-kit in production
23:38	tbaldridge	Not that there's anything wrong with it, it's just a big unknown. While ex-java teams are probably a bit more comfortable with Jetty.
23:42	Jaood	tbaldridge: Jetty is also more mature, battle-tested and more actively developed.
23:42	justin_smith	tbaldridge: I have used http-kit in prod without issue
23:43	tbaldridge	Jaood: exactly
23:43	tbaldridge	justin_smith: yeah, I've never really had an issue with it either. But the last time the discussion came up with a client it was a big question of "do we trust the hundreds of Java eyes that have seen the Jetty code...or the dozen of clojure people working on HTTP Kit"".
23:44	tbaldridge	Not much of a contest there sadly. But I think it depends on your needs/goals
23:48	justin_smith	the container / servlet abstraction is a difference, but a small one when running standalone
23:49	Jaood	tbaldridge: I can see why http-kit is attractive, a small, fast http server design for specifically for ring
23:50	justin_smith	also, you can use dynamic binding in jetty, bevause a request will stay in one thread, last I checked
23:51	justin_smith	http-kit can break dynamic binding
23:52	justin_smith	this might be inherent in any server where you can use sockets
23:52	Jaood	jetty is also a fast web server a la nginx
23:53	justin_smith	is it hardened like nginx?
23:54	Jaood	yeah, you can have it public facing
23:55	justin_smith	I had no idea
23:55	Jaood	it already supports http2 I think
23:55	justin_smith	I'll have to look into that
23:56	Jaood	Is uncertain if http-kit will ever support http2
23:58	Jaood	justin_smith: I would still prefer nginx though :)