#clojure log - Aug 04 2015

The Joy of Clojure
Main Clojure site
Google Group
IRC
List of all logged dates

2:04 lxsameer: folks, is the any good clojure podcast aroudn?

2:18 lambda-smith: Hmmm... so you can use bigint to "cast" a string to a number.

2:18 Any reasons why I wouldn't want to use bigint?

2:40 oddcully: lambda-smith: if you don't want a BigInteger maybe?

3:06 arrdem: As of 1.8 Clojure supports ^int? is ^float also supported?

3:15 amalloy: what do you mean, supports ^int?

3:19 arrdem: nevermind

3:19 someone on the mailing list seems to have been silly

3:57 tgoossens: Anyone experience with Clojure+gradle (clojuresque). It seems to be unmaintained?

5:24 gko: Question regarding defmulti/method vs CLOS eql dispatch: how do I define a defmulti that has 4 parameters and create methods for combinations of 1, 2, 3 or even 4 parameters, without blowing up defmulti dispatch-fn? For example, I could have a call (my-method v1 v2 v3 v4) and have an actual method for v1 = :x and v3 = :y and the values of v2 and v4 would be irrelevant, and another actual method for v1 = :z and v2, v3 and v4

5:24 irrelevant. All other combinations would call the default.

5:40 quoB1phe: gko: well, you can implement any logic you want in the dispatch function. It's all up to you.

6:50 Olajyd: Anyone using clojure with apache spark

6:51 tslocke: Can someone explain why this is nil? — (meta ^:a 'a)

7:03 hyPiRion: tslocke: 'a is expanded to (quote a). What would (meta ^:a (quote a)) return?

7:04 tslocke: hyPiRion: OK got that, what about (meta (first '[^:a a]))

7:08 hyPiRion: Mm. That's like (meta '^:a a), which is equivalent to (meta (quote ^:a a))

7:09 The metadata is attached to the symbol, and since it's not resolved/evaluated, it's kept on the symbol itself.

7:09 compare this to (let [a {}] (meta ^:a a)), which will return nil because a is evaluated

7:16 michel_slm: is clojurescript.net broken at the moment?

7:16 tslocke: The best example is (quote ^:a a) — I don’t understand why the returned symbol has no metadata on it

7:17 quoB1phe: michel_slm: looks like it is

7:24 hyPiRion: tslocke: but it does

7:24 ,(meta (quote ^:a a))

7:24 clojurebot: {:a true}

7:26 tslocke: hyPiRion: looks like a clojurescript issue - evals to nil in clojurescript

7:27 although I’m not on 1.7 so could well be fixed

7:29 hyPiRion: oh

7:44 blackbird_: if I need to generate a string key for clojure data structures, is the best way (str (hash coll))?

7:47 Jickelsen: What would be a good approach to scrape javascript-based sites? Could i.e. Enfocus handle this or would I need to use something like PhantomJS?

8:00 ebzzry: Why is it that after a spit to *out* I can no longer print to *out*?

8:02 Bronsa: ebzzry: maybe you need to flush the stream?

8:03 ebzzry: Bronsa: (flush) doesn't work though.

8:07 Bronsa: ebzzry: what error are you getting?

8:08 ebzzry: Bronsa: I don't get any errors. I just can't get print to *out* anymore: (spit *out* "") (print "foo")

8:10 Bronsa: ebzzry: ah, spit closes the out stream

8:10 ebzzry: Bronsa: ok

10:03 justin_smith: gko: about your defmulti question - you can have a dispatch function with multiple arities, or varargs (or even a mixture of the two)

10:03 IceD^: got strange issue

10:04 let's say I got function foo/migrate. When I run it from repl - it executes instantly. When I run it with lein run -m foo/migrate - it still executes instantly (plus lein start time) and hangs for like 20-30 seconds afterwards (lein still running, nothing else happens)

10:05 justin_smith: IceD^: does migrate use futures or agents?

10:05 IceD^: no idea. it's drift this time

10:05 justin_smith: IceD^: if so, you may need to call shutdown-agents

10:05 IceD^: let me try

10:06 justin_smith: IceD^: if futures or agents are used, clojure won't exit immediately unless you explicitly shut down the thread pool

10:06 IceD^: yeah, that's it

10:07 justin_smith: of course be sure all the other threads are done... :)

10:07 IceD^: and it's probably nomad

10:07 you are helping me 3rd time now and giving right answers immideatly :)

10:08 justin_smith: glad I could help

10:08 oddcully: (inc justin_smith)

10:08 lazybot: ⇒ 283

10:08 justin_smith: (identity amalloy)

10:08 lazybot: amalloy has karma 288.

10:09 clojurebot: It's greek to me.

10:09 justin_smith: catching up...

10:10 IceD^: just in case - fighting to replace legacy erlang projects (which will be rewritten in any case) with clojure ;]

10:10 justin_smith: interesting

10:11 IceD^: have had more than enough of erlang for quite few lifetimes

10:11 justin_smith: clojure has a few different concurrency models to choose from, but none of them are quite like erlang

10:11 IceD^: at least clojure got strings ;)

10:11 justin_smith: heh

10:15 IceD^: and tooling (thanks to technomancy)

10:35 dstockton: is there a semantic difference in defining protocol methods and implementations begining with -

10:37 justin_smith: dstockton: - is the default prefix used by gen-class, protocol methods are special even without gen-class

10:37 dstockton: aha, so thats why i can't seem to access this method outside the namespace it's in?

10:37 i get method not implemented

10:37 'no implementation of method'

10:39 justin_smith: dstockton: how are you invoking it, and what is the definition?

10:41 dstockton: (defprotocol Search (search [coll pattern])) and (defrecord Obj [] Search (search [coll pattern] ... in a db namespace

10:41 justin_smith: common mistakes include not requiring the namespace that defines the protocol, and trying to use the protocol function without first ensuring it is in scope (protocol function scope is like regular scope), and forgetting that the first argument is always "this"

10:41 dstockton: and then (db/search (Obj.) pattern) in another

10:41 justin_smith: hmm

10:42 dstockton: justin_smith: i lied, its not (Obj.)

10:42 and i think what im using there is not an instance of the record

10:42 justin_smith: dstockton: well that would do it :)

10:42 dstockton: yeah, i think i can sort it out, was just checking i wasn't missing something basic

10:42 justin_smith: dstockton: perhaps you wanted (search Obj coll pattern)

10:43 just a wild guess

10:43 dstockton: regarding the - prefix, this is something i'd want if i needed java interop?

10:43 justin_smith: exactly, it's for making methods that are directly callable from java

10:43 dstockton: ok, got it

10:43 thanks!

10:43 justin_smith: eg. to implement the methods jsvc looks for in a jar

10:44 which reminds me, why must jsvc log handling be so garbage :(

10:48 sdegutis: What are some testing library options like Specl?

10:48 Better yet, what are the best testing libraries for Clojure?

10:49 Speclj has become unusable for me due to https://github.com/slagyr/speclj/issues/109 which was closed by the author as Can't Reproduce.

10:51 blkcat: good morning #clojure

10:55 justin_smith: good morning, blkcat

11:14 sdegutis: I'm back.

11:14 What are the best Clojure testing libraries of 2015?

11:17 zerokarmaleft: I'm partial to expectations, but ymmv

11:33 sdegutis: zerokarmaleft: thanks

11:59 These days I'm seeing less and less advantage of Clojure over just ES6 + Immutable.js on Io.js

12:00 tcrayford____: integers

12:00 sdegutis: Overrated.

12:16 I can't think of a single thing I would miss.

12:16 I was going to say ->> but that's already naturally present in JS using the dot operator.

12:20 zerokarmaleft: the JS community has co-opted a lot of good ideas from Clojure, and that's good for everyone

12:27 sdegutis: I have to agree with zerokarmaleft here.

12:27 tcrayford____: seriously though, the nature of JS's floating point doesn't affect the vast majority of numbers that we actually encounter in real life code.

12:28 tcrayford____: sorry I responded earlier. Not interested in this discussion, and especially not in this place.

12:28 sdegutis: :)

12:28 tcrayford____: s/not interested/not taking part/

12:31 sdegutis: :D

12:39 talvdav: i use ccw with eclipse, and i can't use AltGr+Q to type an @

12:40 anyone knows about this?

12:40 checked keybindings

12:40 there is nothing bind to Altgr+q and there was only one binding to ctrl+alt+q

12:40 wich i unbound

12:40 but nothing

12:44 without plugin everything works

13:00 schaueho: I'm looking into core.async pipelines currently and have a seemingly simple question.

13:00 when would you use pipeline-blocking vs. pipeline-async?

13:01 My current use case would be fetching html -- I can go either way, but it's not clear to me why I would chose the one or the other

13:08 puredanger: pipeline-async is for when you expect to be called back from another system

13:08 another piece of code that is

13:09 so the case where you're sending a callback off to someone else

13:09 otherwise, if you know when your operation has been completed, use -blocking

13:13 schaueho: I'm using clj-http currently to fetch HTML, so no callbacks involved.

13:13 sounds like -blocking would be the way to go.

13:14 I guess using http-kit/get would be a use-case for -async then (haven't looked at it in detail).

13:15 @puredanger thx for the explanation

13:17 puredanger: with -async, the function you give pipeline should never put onto the queue - that can cause a deadlock, particularly in an expanding transducer case like mapcat

13:22 kwladyka_: how often do you have trace missing? I have almost all the time when i am writing something... it doesnt help :/

13:23 expez: kwladyka_: you can turn that off by setting some jvm setting. Leiningen sets this option by default for most users, though...

13:24 {blake}: kwladyka: Well, more than I'd like.

13:24 kwladyka: expez, but i want better error message then trace missing, it doesnt help

13:24 {blake}, oh i thought maybe it is only my problem...

13:25 expez: kwladyka: you can turn off the optimization option which optimizes away the information necessary for the stacktrace to remain, is what I meant

13:25 {blake}: kwladyka: No, I'll get it a couple of times a week. Down from several times daily when I started.

13:26 afairy: (defmacro [f & args] (apply ~f (concat args "foo")) <- what is the way to make args appear as quoted list in the macro expansion (so that concat works)

13:27 {blake}: It usually means (at least when I get it) that I've got a nil I'm trying to do something with.

13:28 afairy: I suppose (quote ~args) works.

13:35 amalloy: afairy: that should either be (defmacro foo [f & args] (~f ~@(concat args ["foo"]))) or, more likely, (defn foo [f & args] (apply f (concat args ["foo"])))

13:39 afairy: amalloy, the real macro has core.async <! in it, here it is: https://www.refheap.com/107541

13:39 the ugly thing is the captures, but it has to work for clojurescript...

13:40 <? is <! with a check for Error/Throwable.

13:56 ripvanwinkle: Quick question: Need to store many items with tags for fast recall & search, but tag each item & then call all that match a tag. Is map the right choice here - i.e. def x { :data "This is a sentence" :speaker "John Howard" :index 27234 } ?

14:00 hiredman: clojure.set/index

14:00 amalloy_: bruncol needs the boot

14:03 ripvanwinkle: @hiredman - thanks

15:00 gfredericks: how do I make a tuple schema (w/ prismatic)? I could've swore it was [Foo Bar]

15:00 I won't swear it anymore though because apparently it doesn't work

15:02 oh I see it has pair, which can work, but seems odd it only has that o_O

15:02 maybe they think large tuples are smelly

15:13 amalloy: gfredericks: obviously (reduce pair [int int int int])

15:14 gfredericks: it's what john mccarthy would have wanted

15:33 scpike: Is deploying a clojure web service as a linux service that just runs `java -jar uberjar.jar` a normal thing to do? (I come from ruby-land where it's much more involved)

15:35 stuartsierra: scpike: yes, that is common.

15:36 amalloy: scpike: it's not the most sophisticated way to do things, but it's fine for most purposes

15:36 stuartsierra: Depending on your requirements, you may want additional tools to handle failure, restart, monitoring, etc.

15:36 wasamasa: out of interest, what would be the most sophisticated way?

15:37 amalloy: i dunno, there are a lot of features you can add on top of that depending what you want. you can put multiple services into the same container, for example

15:37 * wasamasa did deploy something running `lein run` today

15:38 amalloy: that is the least sophisticated way

15:39 scpike: awesome, thanks

15:40 wasamasa: I disagree

15:40 here's the least sophisticated way: http://briancarper.net/blog/510/deploying-clojure-websites

15:40 "Summary: Emacs + SLIME + Clojure running in GNU Screen; all requests are handled by Apache and mod_proxy sends them to the appropriate Jetty instance / servlet."

15:51 justin_smith: hahaha

15:52 wasamasa: at least I'm using systemd to manage it

15:52 so I'm pretty much done with the deployment, just wondering what would be better ways to run the app

15:52 let me guess, an uberjar/war?

15:53 or is there anything objectively better?

15:53 sdegutis: ,:∑

15:53 clojurebot: :∑

15:53 sdegutis: favorite new clojure keyword / emoticon

15:56 ,(keyword "")

15:56 clojurebot: :

15:56 sdegutis: Actually that one may be.

16:06 Pop quiz: What's the coolest thing you can do with Clojure maps? The winner gets 10 points. Second place gets 5 points.

16:07 * sdegutis bets justin_smith will win and amalloy will get 5th place

16:16 wink: Apparently I am boring, because into and :keyword is cool enough for me :P

16:19 gfredericks: ,(defmethod print-method :sdegutis [o pw] (.write pw "I am sdegutis"))

16:19 clojurebot: #object[clojure.lang.MultiFn 0x60103242 "clojure.lang.MultiFn@60103242"]

16:19 gfredericks: ,(-> {:this :is :my :map} (vary-meta assoc :type :sdegutis))

16:19 clojurebot: I am sdegutis

16:19 sdegutis: Nice!

16:19 gfredericks takes the lead!

16:22 TimMc: ,{:sdegutis "This."}

16:22 clojurebot: {:sdegutis "This."}

16:22 TimMc: because map literals are the shit

16:24 sdegutis: So true.

16:29 gfredericks: ~map literals |are| the shit

16:29 clojurebot: c'est bon!

16:30 sdegutis: I'm not eligible to win because I'm the facilitator, but here's my shot at it anyway:

16:30 ,(-> (->> get (repeat 2) (apply hash-map)) (get get))

16:31 clojurebot: #object[clojure.core$get 0x46e18aac "clojure.core$get@46e18aac"]

16:31 sdegutis: Wait what?? Is this ClojureScript!?

16:31 Oh I bet Clojure 1.7 changed the pretty-printing of objects.

16:33 ebzzry: How can I make function x refer to a latter defined function y?

16:34 oddcully: ,(doc declare)

16:34 clojurebot: "([& names]); defs the supplied var names with no bindings, useful for making forward declarations."

16:34 ebzzry: oddcully: thanks

16:35 sdegutis: Alright, get your entries in if you haven't. 30 minutes left.

16:37 chouser: ,(reduce #(%2 % '(sdegutis is)) '{(sdegutis is) (awesome) (sdegutis is-not) (lame)} [get conj])

16:37 clojurebot: ((sdegutis is) awesome)

16:38 sdegutis: Whoa!

16:38 chouser: ...because Clojure maps support complex keys. And parens are awesome.

16:38 blkcat: i think chouser has it on lock

16:38 sdegutis: gfredericks has some pretty tough competition by the late chouser!

16:41 But we've yet to see amalloy's and Bronsa's entries. It's not over yet!

16:46 Also, using juxt as an alternative to select-keys in a way that's compatible with ->>: ##(->> {:a 10, :b 20, :c 30} ((juxt :a :b :c :d)) (sort))

16:46 lazybot: ⇒ (nil 10 20 30)

16:49 sdegutis: But that only works with keys that act as their own functions on maps.

17:23 Time's running out!

17:27 What an exciting competition. Any number of candidates have yet to submit their entries! Will we see what creative answers puredanger or TEttinger2 come up with? Stay tuned to find out!

17:32 justin_smith: ,(into {} ['([:a :b] 42)]) ; sdegutis - I like this misleading error message

17:32 clojurebot: #error {\n :cause "java.lang.Long cannot be cast to java.util.Map$Entry"\n :via\n [{:type java.lang.ClassCastException\n :message "java.lang.Long cannot be cast to java.util.Map$Entry"\n :at [clojure.lang.ATransientMap conj "ATransientMap.java" 44]}]\n :trace\n [[clojure.lang.ATransientMap conj "ATransientMap.java" 44]\n [clojure.lang.ATransientMap conj "ATransientMap.java" 17]\n [clojure.co...

17:32 justin_smith: err

17:32 not that one

17:32 {blake}: Yeah, that one's great.

17:33 sdegutis: Haha.

17:33 justin_smith: ,(into {} ['([:a :b] 42)]) ; sdegutis - I like this misleading error message

17:33 clojurebot: #error {\n :cause "java.lang.Long cannot be cast to java.util.Map$Entry"\n :via\n [{:type java.lang.ClassCastException\n :message "java.lang.Long cannot be cast to java.util.Map$Entry"\n :at [clojure.lang.ATransientMap conj "ATransientMap.java" 44]}]\n :trace\n [[clojure.lang.ATransientMap conj "ATransientMap.java" 44]\n [clojure.lang.ATransientMap conj "ATransientMap.java" 17]\n [clojure.co...

17:33 sdegutis: I think justin_smith may have to be disqualified due to intoxication.

17:33 justin_smith: oh wait, that is still wrong, but different from the kind of wrong I get locally

17:33 lol

17:34 sorry for the double up

17:34 sdegutis: locally I get "ClassCastException clojure.lang.PersistentVector cannot be cast to java.util.Map$Entry clojure.lang.ATransientMap.conj"

17:34 Bronsa: justin_smith: i think that might change in 1.8

17:34 justin_smith: Bronsa: oh, cool

17:35 Bronsa: lol

17:35 justin_smith: ,*clojure-version*

17:35 clojurebot: {:major 1, :minor 8, :incremental 0, :qualifier "alpha2"}

17:35 Bronsa: clojurebot is at 1.8 yeah

17:35 justin_smith: Bronsa: it's still wrong, but it picks the val instead of the key now

17:35 Bronsa: yeah

17:35 wait

17:35 , (into {} ['([:a :b])])

17:35 clojurebot: {:a :b}

17:35 {blake}: Ever have days where you just can't recurse?

17:36 justin_smith: ,(into {} ['(:key [:a :b])])

17:36 clojurebot: #error {\n :cause "clojure.lang.Keyword cannot be cast to java.util.Map$Entry"\n :via\n [{:type java.lang.ClassCastException\n :message "clojure.lang.Keyword cannot be cast to java.util.Map$Entry"\n :at [clojure.lang.ATransientMap conj "ATransientMap.java" 44]}]\n :trace\n [[clojure.lang.ATransientMap conj "ATransientMap.java" 44]\n [clojure.lang.ATransientMap conj "ATransientMap.java" 17]\n ...

17:36 Bronsa: &(into {} ['([:a :b])])

17:36 lazybot: java.lang.ClassCastException: clojure.lang.PersistentVector cannot be cast to java.util.Map$Entry

17:36 Bronsa: ,(into {} ['([:a :b])])

17:36 clojurebot: {:a :b}

17:36 justin_smith: oh I was doing it wrong

17:36 Bronsa: a nice enhancement

17:36 sdegutis: Hint: We've yet to see any entries that invert a map.

17:37 justin_smith: ,(into {} (map (comp vec reverse) {:a 0 :b 1 :c 2}))

17:37 clojurebot: {0 :a, 1 :b, 2 :c}

17:39 chouser: That's a cool thing you can do in spite of a map.

17:39 justin_smith: heh

17:40 hiredman: ,*clojure-version*

17:40 justin_smith: ,(into {} (map (comp vec rseq) {:a 0 :b 1 :c 2})) ; shaved off a few characters

17:40 clojurebot: {:major 1, :minor 8, :incremental 0, :qualifier "alpha3"}

17:40 {0 :a, 1 :b, 2 :c}

17:40 hiredman: microservices man, the future

17:41 sdegutis: If you haven't submitted an entry, time's running out!

17:41 Just a reminder for those joining us: "What's the coolest thing you can do with Clojure maps? The winner gets 10 points. Second place gets 5 points."

17:44 TimMc: For those not joining us, you can also talk about other things.

17:44 sdegutis: Now hold on a second, that's just not true.

17:53 puredanger: I put all my cool stuff into the 1.7 release

17:54 Anyone notice the new IMapIterable interface? Direct iteration of only keys or vals without making entries.

17:54 Used under keys or vals or for iterating sets

17:54 Bronsa: w00t

17:55 is that 1.7 or 1.8? totally missed that

17:55 puredanger: 1.7

17:55 Bronsa: cool

17:56 oddcully: ,{nil nil}

17:56 clojurebot: {nil nil}

17:57 Bronsa: ,(let [a (array-map Double/NaN 1)] (assoc a (key (first a)) "foo"))

17:57 clojurebot: {NaN 1, NaN "foo"}

17:57 Bronsa: ,(let [a (hash-map Double/NaN 1)] (assoc a (key (first a)) "foo"))

17:57 clojurebot: {NaN "foo"}

17:57 Bronsa: this one was fun the other night

17:57 oddcully: ,({nil nil} nil ::default)

17:57 amalloy: oh, that's nice, puredanger

17:57 clojurebot: nil

17:58 Bronsa: puredanger: ^ does that deserve a fix? I have one

17:58 puredanger: Which?

17:58 Bronsa: puredanger: difference between array-map and hash-map wrt NaN handling

17:58 as key

17:58 the edgiest of edge cases :)

17:59 puredanger: I can't say that's at the top of my list

18:00 Bronsa: ,(let [a (array-map (reify Object (equals [_ _] false)) 1)] (assoc a (key (first a)) "foo"))

18:00 clojurebot: {#object[sandbox$eval121$reify__122 0x210788a3 "sandbox$eval121$reify__122@210788a3"] 1, #object[sandbox$eval121$reify__122 0x210788a3 "sandbox$eval121$reify__122@210788a3"] "foo"}

18:00 Bronsa: ,(let [a (hash-map (reify Object (equals [_ _] false)) 1)] (assoc a (key (first a)) "foo"))

18:00 clojurebot: {#object[sandbox$eval147$reify__148 0x42848dfb "sandbox$eval147$reify__148@42848dfb"] "foo"}

18:00 Bronsa: actually not only for NaN

18:00 all objects that compare identical? but not equal

18:03 yojoe: is it possible to load a lein plugin as a dependency? Would like to use some functions from a lein plugin in clojure code (not from command line)

18:04 Whenever I try to regularly add it as a dependency, i get errors like "Could not locate leiningen/help__init.class"

18:04 justin_smith: yojoe: sure, you can put it in your :dependencies rather than :plugins

18:04 I think you need to manually add leiningen.core

18:04 plugins shouldn't depend on their host :)

18:05 yojoe: justin_smith: awesome. thank you for the quick reply. i really appreciate it. will try now :)

18:05 TEttinger: Bronsa: didn't justin_smith discover that here on IRC?

18:05 Bronsa: yup

18:06 TEttinger: ,#{Double/NaN Double/NaN Double/NaN}

18:06 clojurebot: #<IllegalArgumentException java.lang.IllegalArgumentException: Duplicate key: Double/NaN>

18:06 TEttinger: ,(hash-set Double/NaN Double/NaN Double/NaN)

18:06 clojurebot: #{NaN NaN NaN}

18:06 TEttinger: batman!

18:06 sdegutis: oddcully, Bronsa: excellent entries!

18:07 Anyway TEttinger2's NaN-set wins.

18:08 TEttinger: it's justin_smith

18:08 I thieved it from justin_smith's IRC shenanigans

18:09 sdegutis: Hold on just a second. Are you telling me TEttinger2 is justin_smith and not TEttinger?

18:09 TEttinger: ,{Double/NaN 1 Double/NaN 2}

18:09 sdegutis: If only we had some stable concept of identity in #clojure!

18:09 clojurebot: #<IllegalArgumentException java.lang.IllegalArgumentException: Duplicate key: Double/NaN>

18:09 sdegutis: *bu dum tshhhh*

18:09 TEttinger: ,(hash-map Double/NaN 1 Double/NaN 2)

18:09 clojurebot: {NaN 1, NaN 2}

18:10 TEttinger: ,(get (hash-map Double/NaN 1 Double/NaN 2) Double/NaN)

18:10 clojurebot: nil

18:10 sdegutis: AMAZING

18:10 TEttinger: that's a good one.

18:10 sdegutis: That definitely wins.

18:10 justin_smith: and also mine

18:10 sdegutis: Which was yours?

18:10 TEttinger: I don't think it's actually un-gettable... justin_smith, yep it's all been yours

18:10 justin_smith: I'm gonna move to china and be the NaN-king

18:10 * justin_smith waits for his rimshot.

18:11 justin_smith: sdegutis: all the nan ones

18:11 sdegutis: justin_smith: oh

18:11 What's your twitter so I can announce it?

18:11 TEttinger: ,(hash Double/NaN)

18:11 sdegutis: TEttinger: also whats yours

18:11 clojurebot: 2146959360

18:11 TEttinger: I don't know what this is

18:12 sdegutis: twitter?

18:12 clojurebot: http://haicolon.wordpress.com/tweetility/

18:12 justin_smith: sdegutis: mine?

18:12 sdegutis: Yes both.

18:12 justin_smith: @noisesmith

18:13 sdegutis: TEttinger: whats urs

18:15 TEttinger: I don't actively twitter-ize

18:16 sdegutis: Fine, whatever. The results are in! https://twitter.com/_sdegutis/status/628690897845243904

18:17 oddcully: ,(Long/toBinaryString 2146959360)

18:17 clojurebot: "1111111111110000000000000000000"

18:27 kwladyka: is any function to create new empty data from old data, but with all metadata from old data? just something like (new-with-meta (with-meta #{1 2 3 4} {:super-meta 1})) and return #{} with :super-meta 1?

18:27 i know how to do that only using with-meta and meta

18:28 anyway it is maybe enough good

18:30 Bronsa: ,(meta (empty (with-meta {1 2} {3 4})))

18:30 clojurebot: {3 4}

18:31 Bronsa: although the docs don't mention it

18:32 justin_smith: oh, nice trick

18:36 kwladyka: (with-meta #{} (meta boards)) <- i am doing this like that now, but i thought maybe it something shorter

18:38 Bronsa: kwladyka: use `empty`

18:42 yojoe: justin_smith: after i added leiningen and the leiningen core as dependencies, now i get new error. "No such var: b/doc-from-ns-form, compiling:(leiningen/help.clj:12:21)". any ideas?

18:42 justin_smith: b * weird

18:43 kwladyka: would it consume less memory with empty?

18:44 but trick with empty is nice, thx

18:45 justin_smith: kwladyka: empty is going to do less irrelevant work, because what you want is exactly what empty is designed for

18:57 herrwolfe: in cider, is there a way to interrupt a set of tests that is running without closing the nrepl session?

19:00 kwladyka: i am asking because i am looking all possible ways to reduce memory consumption :)

19:00 {blake}: ,(read-string "08")

19:00 clojurebot: #error {\n :cause "Invalid number: 08"\n :via\n [{:type java.lang.NumberFormatException\n :message "Invalid number: 08"\n :at [clojure.lang.LispReader readNumber "LispReader.java" 330]}]\n :trace\n [[clojure.lang.LispReader readNumber "LispReader.java" 330]\n [clojure.lang.LispReader read "LispReader.java" 256]\n [clojure.lang.LispReader read "LispReader.java" 196]\n [clojure.lang.LispReade...

19:00 {blake}: huh

19:01 Bronsa: {blake}: 8 is not a valid octal value

19:01 ,012

19:01 clojurebot: 10

19:01 {blake}: Bronsa, leading zero means octal. I had forgotten that. I was read-string-ing to convert string to numbers.

19:02 Bronsa: {blake}: use Long/parseLong

19:03 {blake}: Bronsa: Is that the mode? I've never found a canonical approach described.

19:04 Bronsa: {blake}: if all yoou have to parse is integer numbers sure

19:05 kwladyka: it is time to sleep, goodnight and see you tomorrow :)

19:05 {blake}: Bronsa: Yeah. It's parsing out a month, day, year.

19:05 Bronsa: if you want to parse stuff like XeY though it won't work

19:20 {blake}: Bronsa: Newp. That's fine.

19:21 (inc Bronsa)

19:21 lazybot: ⇒ 117

21:46 sdegutis: I've noticed my Clojure code is looking very foreign. I just wrote this: (def templates (comp (partial sort-by template-id) :templates))

21:47 akkad: no args?

21:47 sdegutis: Whereas previously it was like this: (defn templates [m] (->> m :templates (sort-by template-id)))

21:47 akkad: oh nvm

21:48 sdegutis: And then it hit me: my code is turning into just Haskell with s-expressions.

21:49 Pretty sure the transliterated Haskell (with pseudo-stdlib) equivalent of the exact same function is: templates = sortBy templateId . getField "templates"

21:50 Where . is Haskelleze for (comp).

21:54 Which is super surprising because I thought I was starting to like JavaScript more, not Haskell.

22:26 justin_smith: point-free is fun

23:37 rhaywood: I'm using Circe version 1.6-d1f9740 with GNU Emacs 24.4.1 (of 2014-10-20)

Logging service provided by n01se.net