#clojure log - Oct 12 2014

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

0:00 squeedee: oic

0:00 boy had to think about that

0:01 thats multiply.

0:01 justin_smith: right - composed of N additions :)

0:01 squeedee: So im not 'dumb', but learning a new language, the jargon and domain around the language certainly slows me down

0:02 on top of that, 4mg of hydromorphone every 3 hours

0:02 justin_smith: right, anyone who knows clojure, having gone through a less impaired process, will understand that

0:03 also, I have been teaching myself haskell, so I feel your pain (the mental half...)

0:03 squeedee: i started on haskell last week

0:03 went 'nahhhh' and came back to clojure

0:03 and not because i find it any more mentally challenging, i just find it really ugly

0:37 catern: in an alternate world, #haskell

0:38 "i started on clojure last week", etc.

0:52 devasia: instead of mapping a function to a list of values, how do I map a value to a list of functions?

0:52 justin_smith: ((juxt inc dec) 1)

0:52 ,((juxt inc dec) 1)

0:52 clojurebot: [2 0]

0:53 justin_smith: ,(map #(% 1) [inc dec])

0:53 clojurebot: (2 0)

0:59 devasia: justin_smith: thank you!

0:59 justin_smith: np

1:00 ,((apply juxt [inc dec]) 1)

1:00 clojurebot: [2 0]

1:00 justin_smith: as you see, it is actually possible to use juxt even if the functions arein a collection

1:00 though map is better if you need laziness

1:01 ,(map #(% 1) (map #(fn [x] (* x % %)) (range 10)))

1:01 clojurebot: (0 1 4 9 16 ...)

1:23 kenrestivo: playing around with manifold... looking for a way to convert a stream back to a core.async channel, doesn't appear to be any way to do it, it's a one-way trip from channel -> stream

1:28 justin_smith: kenrestivo: what about using stream->seq

1:28 kenrestivo: locks up my repl real good :-

1:29 justin_smith: also, there is an extension of Sinkable for channels https://github.com/ztellman/manifold/blob/master/src/manifold/stream/async.clj#L157

1:29 kenrestivo: i guess that's a blocking operation :-/

1:29 noonian: kenrestivo: it looks to me like you should be able to do (let [c (chan), sink-chan (->sink c)] and c will get values from the stream

1:29 https://github.com/ztellman/manifold/blob/master/src/manifold/stream/async.clj

1:29 kenrestivo: ok, will try that, thanks

1:32 one more dumb question: is there any kind of standard way to turn an inputstream into a channel?

1:33 this was a naive attempt, didn't work: https://www.refheap.com/91606

1:34 dagda1_: what does the arrow mean in this method declaration defn- options->jsparams

1:35 noonian: dagda1_: its just part of the name, usually used to denote converting things into different forms of data

1:35 its not special syntax

1:35 dagda1_: noonian: so it is jut a convention

1:35 noonian: yup

1:35 dagda1_: k, thanks

1:35 noonian: np

1:37 justin_smith: ,(let [-crazy'?-‽-name☃ 42] -crazy'?-‽-name☃)

1:37 clojurebot: 42

1:37 justin_smith: ,(def 💩 "Scala")

1:37 clojurebot: #'sandbox/💩

1:38 noonian: lol

1:38 justin_smith: ,💩

1:38 clojurebot: "Scala"

1:38 justin_smith: sorry, that was immature

1:39 kenrestivo: what is that char? it shows up as a question mark inside a diamond

1:39 irssi doesn't do unicode, i guess

1:39 justin_smith: "pile of poo"

1:39 kenrestivo: oh, the famous U+PILEOFPOO

1:39 Jaood: kenrestivo: works for me in irssi

1:40 check your terminal encoding

1:40 scottj: kenrestivo: are you running screen?

1:40 kenrestivo: yes

1:40 scottj: kenrestivo: someone the other day said that was the problem for them

1:41 kenrestivo: i can't imagine runnign irssi without screen. but yeah, it might need special tweezing to do unicode properly

1:41 http://savannah.gnu.org/bugs/?26723

1:42 bug open since 2009 :-0

1:42 * Jaood is on tmux

1:42 justin_smith: with my current setup the symbol won't actually print, but I can insert any unicode based on its name / see the name of a unicode whether it prints or not (erc inside emacs)

1:44 Jaood: funny how it shows with a brown color

1:44 amalloy: fwiw, my client renders most silly characters okay, but not the three-byte supplementary characters like the ones justin_smith is always typing

1:44 Jaood: amalloy: what client are you using?

1:45 amalloy: pidgin, baby's first irc client

1:45 Jaood: oh man

1:46 still active surprisingly

1:46 * Jaood used to to use it for msn :P

1:47 amalloy: i used it when it was still gaim

1:48 * Jaood doesn't goes that far

1:48 Jaood: amalloy: are you on linux? last time I heard it was being replaced by empathy in gnome

1:48 justin_smith: oh, gaim became pidgin? I remember using it for a short time when it was still gaim

1:49 kenrestivo: i still use it occasionally for jabber, and probably still have yahoo and ao-hell accounts in its account list somewhere

1:49 amalloy: kenrestivo: yeah, i find it convenient to have my irc, aim, and google talk all in one client

1:50 kenrestivo: for linux i think it's the most mature/featureful of the chat clients.

1:50 last i checked anyway

1:50 amalloy: Jaood: i am not a willing upgrader

1:50 if it worked eight years ago, it probably still works now

1:52 Jaood: amalloy: did that with bitlbee :) had irc, gtalk and msn in irssi

1:52 BitlBee brings IM (instant messaging) to IRC clients. It's a great solution for people who have an IRC client running all the time and don't want to run an additional MSN/AIM/whatever client.

1:52 amalloy: sure, and that's fine too

1:54 * Jaood look 1337 chatting msn from irssi ;)

1:54 Jaood: *looked

1:55 whatapps has taken over the world

2:07 justin_smith: I just checked, my phone version is just one version too old for whatsapp

2:08 the fact that they even support symbian is surprising

2:08 Jaood: justin_smith: yeah, that was the key to their success, platform support

2:10 and the no setup necessary

2:36 dagda1_: can anyone explain what when-let is doing here (when-let [{:keys [tabId changeInfo tab]} (<! ch)]

2:38 amalloy: dagda1_: why don't you try explaining it, and someone will fill in the bits that are missing or wrong

2:39 dagda1_: amalloy: it is destructuring what is taken from the channel?

2:39 amalloy: that is certainly a true statement

2:40 dagda1_: amalloy: but why is it using when-let, why would it be null?

2:40 amalloy: when do channels return nil?

2:41 dagda1_: amalloy: ok so it might return nil

2:42 numberten: is there a literal for the byte array class?

2:42 [B doesn't seem to work >.>

2:43 ambrosebs: numberten: try "[B"

2:43 amalloy: there aren't literals for any classes at all, numberten: String is a symbol which, when *evaluated*, produces the class java.lang.String, not a literal Class itself

2:44 depending on the context in which you are trying to use this, there are different ways to get at the class of a byte array

2:44 numberten: alright

2:44 i've just been using

2:44 ,(type (byte-array ""))

2:45 clojurebot: [B

2:45 numberten: but it seems kinda hacky :)

3:43 kenrestivo: wait... whatsapp just got bought for... 19 BILLION dollars?

3:43 * kenrestivo makes dr. evil pinky-to-chin motion

3:46 TEttinger: numberten: bytes?

3:46 ,(bytes [0 1 2])

3:46 clojurebot: #<ClassCastException java.lang.ClassCastException: clojure.lang.PersistentVector cannot be cast to [B>

3:46 TEttinger: ,(bytes (byte-array[0 1 2]))

3:46 clojurebot: #<byte[] [B@1dd98e>

3:47 TEttinger: ,(bytes (int-array[0 1 2]))

3:47 clojurebot: #<ClassCastException java.lang.ClassCastException: [I cannot be cast to [B>

3:47 TEttinger: hm

3:47 I know you can type hint with ^bytes

4:59 jphx: so, how can i replace "a b" to "a\ b" ?

4:59 i'm working with file paths with spaces in them

5:16 By_Tor: is this the problem you're running into:

5:16 ,(clojure.string/replace "a b" #" " "\\ " )

5:16 clojurebot: "a b"

5:21 TEttinger: ,(clojure.string/replace "a b" #" " "\\\\ " )

5:21 clojurebot: "a\\ b"

5:21 TEttinger: hm

5:21 I'm guessing clojurebot escapes what it prints

5:21 ##(clojure.string/replace "a b" #" " "\\ " )

5:21 lazybot: ⇒ "a b"

5:22 TEttinger: ##(nth (clojure.string/replace "a b" #" " "\\ " ) 1)

5:22 lazybot: ⇒ \space

5:22 TEttinger: ##(nth (clojure.string/replace "a b" #" " "\\\\ " ) 1)

5:22 lazybot: ⇒ \\

5:25 By_Tor: I think it's the replace fn

5:25 ,(println "\\ A")

5:25 clojurebot: \ A\n

5:25 jphx: hehe

5:25 yep, i've had this headache

5:25 i can use replace to get "a\\ b" but not "a\ b"

5:25 that's as far as i got

5:26 TEttinger: err, \\ probably is the \ you want

5:26 ##(nth (clojure.string/replace "a b" #" " "\\\\ " ) 2)

5:26 lazybot: ⇒ \space

5:26 jphx: touch "a\ b" ; ls "a\\ b" doesn't work

5:26 TEttinger: ##(vec (clojure.string/replace "a b" #" " "\\\\ " ))

5:26 lazybot: ⇒ [\a \\ \space \b]

5:26 jphx: tet, let me try that out

5:32 By_Tor: ,(apply str [\a \\ \space \b])

5:32 clojurebot: "a\\ b"

5:33 By_Tor: it doesn't like a single backslash, lol

5:36 TEttinger: By_Tor, it just prints single backspaces like that

5:37 By_Tor: ah yes, I think you're right

5:37 ,(println (apply str [\a \\ \space \b]))

5:37 clojurebot: a\ b\n

5:38 TEttinger: since it also escapes newlines (it can't print them in a one-line IRC message)

5:39 Phonatacid: Hi. Im trying to use state monads with clojure.algo.monads. After a do-monad statement, I get a [result new-state] vector. If the last step in my domonad stmt is a fetch-val, the returned value ends up as 'result' in my vector. How can I get this result from outside a domonad stmt elegantly, i.e. without applying 'first' to this returned vector ?

6:16 kenrestivo: the real fun is when you have to do regexps in elisp \\\\\\\\\\\

6:34 LauJensen: Gents, I've written a small cljs app, which compiles fine with "lein cljsbuild once", but evaling something like (defn ^:export test []) in Lighttable breaks with "Unexpected identifier". Im on the latest versions of both LT and CS - Anybody know whats up?

6:39 TEttinger: ,(defn ^:export test [])

6:39 clojurebot: #<CompilerException java.lang.SecurityException: denied, compiling:(NO_SOURCE_PATH:0:0)>

6:39 TEttinger: ,(defn test [])

6:39 clojurebot: #<CompilerException java.lang.SecurityException: denied, compiling:(NO_SOURCE_PATH:0:0)>

6:40 TEttinger: ,(defn test1 [])

6:40 clojurebot: #'sandbox/test1

6:40 TEttinger: ,(defn ^:export test1 [])

6:40 clojurebot: #'sandbox/test1

6:40 TEttinger: huh4

6:40 I didn't know you could omit the body

6:40 ,(test1)

6:40 clojurebot: nil

6:45 wei: how do you use the [com.facebook/react "0.11.2"] dependency? do you have to do anything more than putting it in the project.clj file?

6:46 LauJensen: Its not very useful to know :)

6:48 wei: LauJensen: why not?

6:49 TEttinger: ~Om

6:49 clojurebot: It's greek to me.

6:50 TEttinger: ~om

6:50 clojurebot: Titim gan éirí ort.

7:05 dysfun: ooh, i've just discovered a neat trick. #(= some-var %) can be shortened to #{%}

7:06 er #{some-var}

7:11 Gina97: ciao

7:11 !list

7:31 sveri: Hi, I have a jenkins running and a job that runs lein midje configured to produce junit reports in target/surefire-reports. I see that the job runs lein midje, without any error, but it does not generate the junit reports, any ideas why that may be? I moved that jenkins instance to different server, before I moved it that junit generation did work and I don't have a clue what might be different now

7:32 running lein midje from the console as the jenkins user works as expected -l.-

7:33 engblom: Is fireplace still the a plugin most vim-users should use?

7:34 s/a //

7:36 dysfun: sveri: that sounds more like a jenkins question to be honest. it might be seeing a different environment, for example. i've had some interesting jenkins adventures in the past

7:39 sveri: dysfun: hm, jenkins user might say its something clojure related, it's hard to tell what exactly is wrong -.- whatever, which build server do you use now?

7:40 dysfun: ostensibly jenkins, but i don't get paid for clojure work so most of my code is only being tested while i work on it

7:41 i do have some stuff being tested using midje under jenkins though

7:53 sveri: hm, any problems with it?

7:53 john2x_: how do I use lein-ancient on my profiles.clj file?

8:32 borkdude: where can I find a kind of timeline of what came when in clojurescript?

8:33 June 2011: first version of clojurescript.

8:33 what other interesting marks in time are there? ;)

8:37 gfredericks: August 2017: support for method_missing

8:38 borkdude: lol

8:47 Rhainur: I've been working on the problems at 4Clojure for a bit, and I'm getting a bit worried about code readability

8:47 I feel like if I came back to this code after a few months I'd have no idea what was going on in there

8:48 AimHere: Comment it

8:51 LauJensen: Gents, I've written a small cljs app, which compiles fine with "lein cljsbuild once", but evaling something like (defn ^:export test []) in Lighttable breaks with "Unexpected identifier". Im on the latest versions of both LT and CS - Anybody know whats up?

9:00 hellofunk: with compojure.handler/site how does it work that a #'var can be passed, as well as just the unquoted var, and both work? most clojure functions don't allow you to swap one for the other. for example (keys #'some-map) fails

9:08 dagda1: why is :keys used in this (destructuring when-let [{:keys [added removed]} (<! ch)]

9:09 hellofunk: dagda1 what is taken off the channel is no doubt a map, thus you are binding to items in the map

9:10 dagda1: hellofunk: so :keys must be used to get items from a map?

9:10 hellofunk: there areother ways, but the :keys form is a map destructuring form as a shortcut to access map data

9:11 lookup "clojure destructuring" -- it is like a mini language to help make stuff like this more effecint. it is not necessary to use it, but it makes code tighter

9:12 mearnsh: dagda1: :keys helps avoid repetition

9:12 dagda1: thanks

9:15 mearnsh: dagda1: https://www.refheap.com/91612

9:16 dagda1: mearnsh: that completely clears it up, thanks

9:16 mearnsh: np

10:55 clj-learner: sometimes in clojure functions source they have multiple arity calls instead of just using [& args], why is that? (ex: complement source https://www.refheap.com/91614)

10:56 Bronsa: clj-learner: efficiency reasons

10:56 clj-learner: apply and & have some overhead

10:56 clj-learner: so the most used arities are unrolled

10:56 clj-learner: ok, that makes sense

10:57 hellofun`: with compojure.handler/site how does it work that a #'var can be passed, as well as just the unquoted var, and both work? most clojure functions don't allow you to swap one for the other. for example (keys #'some-map) fails

10:57 clj-learner: thanks

10:57 Bronsa: clj-learner: it's not something you should to in your code btw, that's a micro optimization

11:14 technomancy: hellofun`: it only works for functions

11:14 vars call their contents when called

11:15 justin_smith: ,(#'+ 1 1)

11:15 clojurebot: 2

11:15 hellofun`: technomancy you mean for function arguments that are passed var names?

11:15 oh, not arguments, actual functions themselves

11:15 justin_smith: hellofun`: eventually, that function is placed in the calling position - that's when it has to work

11:15 and it does

11:16 hellofun`: interesting

11:16 justin_smith: ,((fn [x] (x 1 1)) #'+)

11:16 clojurebot: 2

11:16 justin_smith: I pass in a var, it gets called

11:17 hellofun`: so the var is not evaluated at compile time, but rather at runtime?

11:17 i'm curious behind the scenes how (+ 1 1) differs from (#'+ 1 1) -- at which point does the #'+ become +

11:18 technomancy: hellofun`: you're passing a var around; they are first-class at runtime

11:18 its contents aren't looked up till it's called

11:19 hellofun`: that's interesting. for example (def a 5) and then (+ #'a 1) does not work, I wonder why it is different for a function. there is an extra level of lookup with all functions?

11:22 justin_smith: hellofun`: I think it's more that var implements IFn

11:23 ,(isa? (type #'+) clojure.lang.IFn)

11:23 clojurebot: true

11:23 justin_smith: and implementing IFn means you can be called like a function

11:23 hellofun`: ah, that's quite cool

11:23 pdk: does clojure have #' now

11:23 zwer: what is #'? I thought I was in #lisp for a second.

11:23 justin_smith: ,'#'+

11:23 clojurebot: (var +)

11:23 hellofun`: yes #' is a way to quote a var and have it namespaced automatically

11:24 justin_smith: not namespaced automatically

11:24 any more than anything else is

11:24 hellofun`: justin_smith 'a vs #'a -- the latter adds the namespace

11:24 actually, that was a bad example

11:24 justin_smith: ,'#'a

11:24 clojurebot: (var a)

11:24 hellofun`: 'a is not a var

11:24 justin_smith: nope

11:25 ` namespaces, maybe that's what you are thinking of

11:25 hellofun`: i am confusing it with backquote

11:25 my bad

12:34 gfredericks: hi.

12:37 mmeix: ji

12:37 hi

12:38 justin_smith: ∿∿∿∿∿∿∿∿∿∿

12:39 gfredericks: anybody know of a jvm library that does exact arithmetic with algebraic numbers?

12:39 mmeix: {I'm to much a newbie to answer that question}

12:40 I would like to see rational number support in cljs though :-)

12:40 gfredericks: I made a library for that

12:40 mmeix: ah!

12:40 gfredericks: $google github gfredericks clj-numerics

12:40 lazybot: [gfredericks/four · GitHub] https://github.com/gfredericks/four

12:40 gfredericks: that is not it

12:40 https://github.com/gfredericks/cljs-numbers

12:41 mmeix: I'm plannung on wtiting some music software, and that would be really handy to have

12:41 thanks for the link!

12:42 gfredericks: np

12:43 Bronsa: justin_smith: were you waving at gfredericks there? :)

12:43 gfredericks: Bronsa: oh no I bet he was

12:44 justin_smith: Bronsa: indeed!

12:44 it was a sine wave

12:44 gfredericks: a sign wagv

12:44 Bronsa: (inc justin_smith)

12:44 lazybot: ⇒ 90

12:45 gfredericks: what a joke to make right before I ask about algebraic numbers

12:45 Bronsa: that was pretty good

12:47 arrdem: Bronsa: random branfiring... I can replace half this shit by just aliasing tejvm/-emit and redefining select methods, right? https://github.com/oxlang/oxcart/blob/master/src/main/clojure/oxcart/emitter/jvm/emitter.clj

12:47 Bronsa: just seeing your activity in the last few days and thinking about minimizing bit rot

12:47 also maybe breathing life back into that...

12:48 bah multimethods are mutable

12:49 gfredericks: except for their dispatch function :P

12:49 Bronsa: arrdem: yeah

12:49 arrdem: why on earth is this the case... an immutable multimethod and a swap! on the var would work fine T_T

12:50 Bronsa: arrdem: want to talk about extend implemented via alter-var-root? :P

12:50 arrdem: Bronsa: you have my axe

12:51 Bronsa: (also why is alter-var-root not alter-var-root!, I mess this up everytime)

12:51 arrdem: Bronsa: because it was alter-var-root first and name changes are breaking

12:51 Bronsa: (defn alter-var-root [& args] (println "DEPRECATED") (apply alter-var-root! args))

12:51 arrdem: yeah that's what I'd do too, but neither of us is Rich so...

12:52 damnit I was motivated for a minute there and now all I see is warts again

13:04 vladh_: Hey guys. Just a quick question - in a namespace, is it bad practice to initialize variables and call functions when the namespace is loaded? Or should I have some mutable variables which are initialized when functions in the namespace are called from the outside?

13:05 arrdem: vladh_: imperative initialization using load time code execution is usually bad news bears

13:05 vladh_: arrdem: thought so, but isn’t mutability bad too?

13:05 arrdem: vladh_: sure, but I personally find mutability excusable in some situations. we've spent what... eighty years? developing cleaver mutable algorithms. we'd be fools to discard them out of hand.

13:06 vladh_: IMO you want some sort of (construct-state) function that builds a _value_ with all your state in it, and then you pass that around everywhere rather than binding those mutable bits to say dynamic vars or atoms.

13:06 justin_smith: vladh_: something that requires a stateful initialization, will be a pain in the ass as soon as a client wants to of them if it is global - consider making a "factory"

13:07 arrdem: ^ justin_smith use the f word but same idea

13:07 justin_smith: s/to/two

13:08 arrdem: Ex. (let [connection (connect-to-db config)] (run-query connection "SELECT * FROM USERS;"))

13:08 rather than having a connection var that you swap or whatever

13:09 vladh_: arrdem: that makes a lot more sense than just mutating the value in the namespace - thank you!

13:09 justin_smith: thank you as well

13:17 mmeix: Very basic question: how do I create a map out of a vector of keys with a default val for each, for example [:a :b] --> {:a [] :b []} ?

13:17 bbloom: ,(into {} (map vector [:a :b] (repeat [])))

13:17 clojurebot: {:a [], :b []}

13:18 mmeix: ah - thanks!

13:18 bbloom: mmeix: but you may not actually need to do that if you're going to operate on the map later with update-in or whatever, you can also use something like fnil

13:18 ,(update-in {} [:x] (fnil inc 0))

13:18 clojurebot: {:x 1}

13:19 luxbock: fnil is a very handy tool to have

13:19 mmeix: I'm trying to solve http://www.4clojure.com/problem/63 and maybe just need a tiny hint ...

13:19 arrdem: fnil is the top function I underuse

13:19 mmeix: (thanks for fnil tip)

13:21 Which brings me to a typical beginnner's problem: finding the right functions out of the big vocabulary of Clojure

13:22 bacon1989: Hey guys, i'm trying to structure my project so that it incorporates tests

13:22 I made a separate folder in my source folder called test, and created a sub-namespace called database with a file core.clj

13:23 mearnsh: mmeix: kibit can help a bit

13:23 bacon1989: src-clj/test/database/core.clj , (ns test.database.core (:use clojure.test)) (deftest (is (= 5 4)))

13:23 luxbock: bacon1989: are you using leiningen?

13:23 bacon1989: luxbock: yeah

13:23 I run lein test, and it won't find this test

13:23 if I run (run-all-tests)

13:23 no problem

13:24 justin_smith: bacon1989: it looks for tests under test/... not src/... by default

13:24 bacon1989: justin_smith: yeah, I figured, but I couldn't get it to work under tests/, it complained about missing files

13:24 Bronsa: (inc fnil)

13:24 lazybot: ⇒ 1

13:24 Bronsa: no love for fnil :(

13:24 bacon1989: i'll try looking throuhg the lein docs

13:24 gfredericks: ((fnil inc 0) fnil)

13:25 justin_smith: bacon1989: if you have src/myproj/core.clj the test should be in test/myproj/core-test.clj

13:25 bacon1989: not in the same src/, and not in src/tests/ - unless you reconfigure to look for tests there I guess

13:26 bacon1989: justin_smith: yeah, my project is a clojure+clojurescript project, so i've been changing things around

13:26 i figured lein test would also do what (run-all-tests) does, but I guess not

13:27 justin_smith: bacon1989: run-all-tests is called by lein test

13:27 arrdem: (inc gfredericks)

13:27 luxbock: mmeix: I don't know if this is the best way to solve that problem but I would use reduce wrapped in a function

13:27 lazybot: ⇒ 92

13:27 gfredericks: bacon1989: I think run-all-tests only works because you've already loaded the test file manually

13:27 leiningen doesn't know to load the file since it doesn't know where it is

13:27 justin_smith: bacon1989: but run-all-tests only works if the namespaces with the test definitions are loaded first

13:27 run-all-tests does not namespace loading at all

13:28 bacon1989: hmm I see

13:29 justin_smith: bacon1989: the issue here is telling lein how to find your test namespaces.

13:29 mmeix: luxbock thnx

13:29 bacon1989: yeah, i'm trying to find the project.clj example, where it shows all of the different options available

13:29 so I can go change the tests folder

13:32 justin_smith: https://github.com/technomancy/leiningen/blob/master/sample.project.clj#L277

13:32 :test-paths

13:33 bacon1989: yeah, I just found it :P

13:33 thanks

13:33 i'm probably going to try and get clojurescript tests working as well, hopefully that's not too difficult

13:34 arrdem: technomancy: if I wrote a way to add profile based dependency replacement, would you take it?

13:34 bacon1989: justin_smith: that did the trick, thanks

13:35 justin_smith: cool

13:39 mmeix: fnil is a cool beast indeed, I'm just learning

13:40 arrdem: was there a hack somewhere for finding multiple aliased files on the classpath? So say finding all resources "/manifest.ed"

14:05 gfredericks: hugod: is it purely a coincidence that my lein 2.5.0 does not use the repl profile and you have post-2.5.0 commits messing with repl profiles?

14:06 justin_smith: arrdem: iirc I saw amalloy_ show a snippet for doing that - maybe it had something to do with iterating over all the the items in the classpath and asking each one for the resource?

14:08 gfredericks: I'm trying to do (System/exit 0) in my repl init code and for some reason this hangs

14:08 justin_smith: (shutdown-agents)

14:08 gfredericks: (not-very-related to my prior statement)

14:08 justin_smith: bah of course I bet that's it

14:08 or actually

14:08 it might be a timeout in the leiningen process

14:08 ogdenn: is anyone able to help me come up with an enlive selector?

14:09 gfredericks: it quit hanging quicker than 60sec I think

14:10 ogdenn: I need to select all inputs with a name that is one of a set of names

14:12 I basically need the selector predicate (attr-in :attr-name #{possible values})

14:22 gfredericks: new user profile tactic for keeping the classpaths & deps trees clean

14:22 instead of :plugins [[lein-try "0.4.1"]]

14:22 do :aliases {"try" ["with-profile" "+lein-try" "try"]}

14:23 and make a separate profile called :lein-try with the plugin

14:24 borkdude: lein plz <alias> is nice, but it would be nice if the alias would also work with lein try :)

14:24 lein plz add <alias> I mean

14:24 what a co-incidence, I didn't see gfredericks talk about lein try

14:24 * gfredericks was so confused

14:25 justin_smith: now we need lein kthx

14:28 borkdude: uuh... https://www.refheap.com/91622

14:30 ogdenn: Agh, sorted. Need to use (apply attr-has :attr-name possible-values) just incase anyone is interested.

14:44 gfredericks: oh man trying to figure out this leiningen repl profile problem is spooky

14:45 anybody know if this is a reasonable thing for a leiningen plugin to do? https://github.com/greglook/whidbey/blob/master/src/whidbey/plugin.clj#L28-47

14:48 hyPiRion: gfredericks: Better to create the profile :whidbey.plugin/profile and merge it into the project map.

14:48 gfredericks: hyPiRion: "merge it into the project map"?

14:49 I'm getting super weird results using this

14:49 especially if I put my own :repl profile in ~/.lein/profiles.clj

14:50 I will get only one of the two repl profiles active at any point, but different ones depending on how I start the repl

14:50 `lein repl` is different from `lein with-profile +user repl` even though the difference between the two should be a noop

14:50 I will have to figure out again how to build my own lein to debug this

14:50 hyPiRion: gfredericks: like, enable through merging (-> project (assoc-in [:profiles ::profile] my-profile) (leiningen.core.project/add-profiles [::profile]))

14:51 gfredericks: well I think what the plugin is trying to pull off here is not not have its code "enabled" unless the :repl profile is also

14:52 hyPiRion: hrm

14:54 gfredericks: what's the easiest way to build and/or run a custom leiningen?

14:57 hey it's easy

14:57 just edit the leiningen source and run the bin/lein script in the project instead of the normal installed one

14:58 hyPiRion: gfredericks: yeah, but you'd have to bootstrap and compile first

14:58 gfredericks: I bootstrapped; did not compile

14:58 it's still running the custom code

14:58 hyPiRion: gfredericks: right, but it'll blow up if you try to search

14:58 gfredericks: if I try to what

14:58 is leiningen a search engine?

14:59 justin_smith: that sounds like a jaden smith tweet

14:59 hyPiRion: gfredericks: `lein help search`

15:01 gfredericks: :aliases {"hepl" ["help"]}

15:02 hyPiRion: I stopped using lein search after like a year ago when it seemed to never ever return

15:02 hyPiRion: gfredericks: I don't use it either

15:03 gfredericks: so my guess is going to be that the profile merging is happening before the middleware is running

15:03 wait I take it back

15:04 urm

15:06 hyPiRion: would the whidbey middleware be bad because it can shadow an existing :repl profile from profiles.clj?

15:07 it seems to expect that any existing :repl profile is in the :profiles key of the project, but I'm thinking that's not the case for ~/.lein/profiles.clj

15:07 presumably those are in the metadata somewhere

15:08 hyPiRion: no, they should be in the project map

15:08 pretty sure at least

15:12 gfredericks: hyPiRion: I'm looking around this call: https://github.com/technomancy/leiningen/blob/master/src/leiningen/repl.clj#L285-287

15:12 beforehand my profiles.clj :repl profile is not in the project proper, but it is in the project's metadata under [:profiles :repl]

15:12 afterward it is in the project proper and appears to have clobbered the whidbey stuff

15:14 hyPiRion: gfredericks: There has been some new functionality popping into profile merging, not sure what profiles-with-matching-meta does (although I guess it fetches the ones with ^:repl tagged).

15:14 gfredericks: so I'm going to just conclude this isn't a supported way to customize leiningen and whidbey should do something else

15:15 I bet there's not a real downside to just modifying the project map directly

15:15 or calling merge or something

15:17 I need to write myself a lein plugin for deploying a random commit of a random project to clojars under a fork group-id

15:20 hah calling merge gets me a stack overflow

15:36 amalloy: justin_smith, arrdem: no, you're thinking of someone else

15:38 gfredericks: fun use of dynamic vars -- preventing recursion: https://github.com/gfredericks/whidbey/blob/c380535d08b40737c3c452dc6ee05170a2a49a7d/src/whidbey/plugin.clj#L28-39

15:39 louissmit: Hi all, I’m new to clojure and wondering about the identity functions in reducers: https://gist.github.com/louissmit/4ec16497e74bc07da012

15:39 here it never calls the identity function of the reducing function while it should do that for every partition, right?

15:47 mi6x3m: hey clojure, I am writing a macro defexample taking 4 parameters

15:48 title description show-src? and form

15:48 so an examle looks like

15:48 (defexample "foo" "boo" true/false (println "bla"))

15:48 any better way to structure the arguments?

15:48 or this one is good enough

15:54 gfredericks: um

15:54 mi6x3m: "better" according to what? it's not clear what you're trying to accomplish

15:55 mi6x3m: gfredericks: create a semantically more intuitive way then setting up meta data on my example constructors manually :)

15:55 a example is actually a defn with ^{:example {:title "foo" :desc "boo" :show-src? true/false}}

15:57 gfredericks: you missed the name of the var then, eh?

15:57 same as the title?

15:57 mi6x3m: gfredericks: you are right, it was supposed to be (defexample simple-example "foo" "boo" true/false form) but this is arguably better than the manual meta....

16:00 gfredericks: it's at least less prone to keyword typos

16:00 mi6x3m: gfredericks: true, but still ugly

16:01 gfredericks: you can also write a function that adds stuff aftewards

16:02 (defn set-example-data [the-var title desc ...])

16:03 mi6x3m: gfredericks: hm? using a defn?

16:04 gfredericks: yeah, it would just call alter-meta! on the var

16:04 look ma, no macros

16:05 mi6x3m: gfredericks: but ma, then the example and it's meta would be split. nah i'll just use the ugly macro

16:05 who'll be there to see

16:05 oh, it's open source, myeah

16:11 gfredericks: it's surprisingly difficult to alter nrepl's default printing behavior cleanly

16:13 amalloy: mi6x3m: the problem with (defexample blah "foo" "boo" whatever else) is that you have a bunch of positional arguments that all look the same, and it's easy to forget which is which

16:13 taking a map of options somewhere in there would help a lot, by placing reminders in the user's code: (defexample blah {:thing "foo" :message "boo" :cleanup? false} form)

16:18 mi6x3m: amalloy: yes in the end that's what's going to happen

16:18 I just can't bear the thought of having named arguments with macros

16:19 (defexample blah :title "foo" :desc "boo" :show-src? true form) perhaps

16:19 ok i'm off thanks everyone :)

16:43 mxr1o1: hi

16:43 so i have a bit of embarrasing question..

16:44 gfredericks: put more parens on it

16:44 mxr1o1: my code is built as a hierarchy of functions where top level functions call other functions and they call more functions

16:44 the questions is about writing tests

16:45 writing tests is a requirement of the project

16:45 now, i wonder how should i approach it

16:45 would it be a good practice to test _every_ function?

16:45 or should I only test the highest level (end to end) functions?

16:46 asQuirreL: mxr1o1, I would test all the public functions in each namespace

16:46 gfredericks: what do you have to test to be confident that it's working and that you can refactor it without unknowingly breaking anything?

16:46 mxr1o1: or rather only the lowest level functions..

16:46 amalloy: (inc gfredericks)

16:46 lazybot: ⇒ 93

16:47 mxr1o1: gfredericks: i guess to be "confident" i have to test each and every function

16:47 ...

16:47 or what?!

16:47 :)

16:47 (inc inc)

16:47 lazybot: ⇒ 11

16:48 asQuirreL: (doc inc)

16:48 clojurebot: "([x]); Returns a number one greater than num. Does not auto-promote longs, will throw on overflow. See also: inc'"

16:48 gfredericks: mxr1o1: well if you can test the higher level functions and infer that your code is working from that...

16:49 asQuirreL: (deref 'gfredricks)

16:49 gfredericks: mxr1o1: I feel like the answer becomes obvious once you're not testing just because you're supposed to, and are instead testing because you want an automated way to check that the code works the way it's supposed to

16:49 mxr1o1: gfredericks: but then.. comes a new programmer, removes the top level functions and writes something different using the bottom more generic functions - which don't have tests - maybe in the process he even changes some of these generic functions..

16:50 i.e regression..

16:50 gfredericks: mxr1o1: and then your tests break with "these top level functions no longer exist", so that programmer will be able to tell that he needs to think things through

16:50 I don't think "someday the code might be restructured so that these tests become valuable" is a good reason to write tests today

16:51 cheater: hi

16:51 gfredericks: hello

16:51 cheater: i'm trying to understand this transducers library and i've got this function that takes transducers and runs them on a list

16:51 mxr1o1: gfredericks: yeah.. i tend to agree - otherwise this testing orgy feels like a waste of time after a certain threshold..

16:52 cheater: (this is in haskell)

16:52 gfredericks: mxr1o1: tests aren't free

16:52 cheater: and it ends up looking like this: (ftrans (t1 . t2 . t3)) [1..5]

16:53 and it looks to me like ftrans applies t1, then t2, then t3 to the list... however that's the opposite direction as if you'd do (f1 . f2 . f3) [1..5]

16:53 why is that so?

16:53 mxr1o1: gfredericks: sure.. i'm trying to resolve the best practice of this where tests give more value than they cost to write/maintain

16:53 cheater: are transducers somehow contravariant or something like that?

16:54 Bronsa: cheater: http://clojure.org/transducers

16:54 cheater: "Composition of the transformer runs right-to-left but builds a transformation stack that runs left-to-right (filtering happens before mapping in this example)."

16:54 cheater: Bronsa: yeah, but why is that?

16:57 platz: cheater because the outer transducer 'wraps' the inner transducer

16:57 Bronsa: cheater: https://www.youtube.com/watch?v=6mTbuzafcII&t=25m30s

16:58 cheater: platz: hmm..

16:58 platz: so the outer one gets eval'd first, but it's just returning a closure which wraps the inner one

16:58 cheater: platz: makes sense kind of

16:58 platz: so the data actually gets run through the inner one first

16:59 it's just normal function composition

16:59 but made to look wierd because all of the closure returning

16:59 kenrestivo: kind of like ring handlers in a way

17:07 cheater: platz: hmm

17:08 platz: cheater: http://youtu.be/6mTbuzafcII?t=25m30s

17:08 cheater: platz: Bronsa just linked to that

17:16 thanks for the help guys

17:16 cya!

17:33 justin_smith: hiredman: were you the one that had a code snippet to get multiple resources with the same path from the classpath?

17:36 rurumate: I'm confused about this stack trace: https://www.refheap.com/91623. Why does it come to Compiler.java:6361 twice? Why does the analyzeSeq call succeed the first time, but not the second. Anyone?

17:38 tavoe: Easy question. How do I check what my present working directory is with clojure?

17:38 justin_smith: ,(.getCanonicalPath (java.io.File. "."))

17:38 clojurebot: #<SecurityException java.lang.SecurityException: denied>

17:38 tavoe: thank you. Cool

17:39 justin_smith: rurumate: just guessing - it's recursing, "(x y)" analyzes fine, it's getting the contents of "x" that blows up

17:40 rurumate: I don't know how to debug clojure. It's not a lein project. How to start a repl?

17:41 justin_smith: rurumate: it's much easier with lein, but you can get a repl with java -jar your.clojure.version.jar

17:42 rurumate: ok but how to debug the java parts, like Compiler.java?

17:43 how did rich do it, did he use a debugger or what

17:43 justin_smith: I think he used eclipse or idea

17:44 * micrypt got disconnected for a sec' there. Not sure if he missed anything.

17:50 rurumate: micrypt: just trying to find out things about the compiler, from the repl. Making it go boom, like (nil 5), creates interesting stack traces, but how to see more exactly what's happening? I don't like the thought, but maybe will have to use eclipse soon

17:55 this would be the java version: (clojure.lang.Compiler/eval (clojure.lang.RT/readString "(nil 5)"))

17:56 so that's a java program, it can be debugged. it seems there is no other way

18:04 where are the unit tests in clojure core?

18:04 gfredericks: you mean these? https://github.com/clojure/clojure/tree/master/test/clojure/test_clojure

18:05 rurumate: so they are all in clojure? that means, rich has been developing the java code, using a clojure repl?

18:06 I'm looking for tests for the java parts specifically, like LispReader and Compiler

18:07 gfredericks: why can't you test those from clojure?

18:08 rurumate: dunno, have to look at it first

18:09 it's just I would expect to find more java unit tests, because at first there is only java, can't test from the repl while developing the repl

18:09 gfredericks: it's not too hard to bootstrap a lisp

18:10 and writing tests in java is somewhat unpleasant

18:10 rurumate: yes, but what about bugs? also Compiler.java has some 8000 lines of code

18:10 gfredericks: I'm sure it didn't at first

18:10 rurumate: isn't is bad style to let it grow so large?

18:11 gfredericks: probably

18:12 rurumate: how would I start a repl to hack these tests? there's no project.clj

18:12 gfredericks: good question

18:13 if you just want to play with the tests using a released version of clojure, you could um

18:13 I don't imagine you use cider or fireplace or anything?

18:14 rurumate: I would like to make experimental changes to the java code too, it's ok to restart the repl, but a real emacs repl would be nice

18:14 yes cider

18:14 gfredericks: okay well with cider you can just open any of those test files and start evaling things

18:14 rurumate: really? doesn't it need to connect to a repl server first?

18:16 gfredericks: playing with the java code is trickier

18:16 you can start a minimal repl from a compiled jar

18:16 starting an nrepl server would be more work

18:16 (for the former, run the clojure.main class)

18:17 rurumate: ok, I see. I think I will just write some JUnit tests for now

18:19 justin_smith: gfredericks: wait, are you saying cider can work with a direct repl not using nrepl / sockets?

18:19 rurumate: really I'd like to see the workflow rich used when writing this

18:20 gfredericks: justin_smith: nope

18:21 oskarkv: rurumate I might not have understood what you meant, but https://github.com/zcaudate/vinyasa#reimport

18:21 rurumate: oh my. there's not even junit in the pom.

18:23 oskarkv: yes that looks cool, I will look into it

18:23 slester: any ideas for finding the largest contiguous shared substring given two strings? I'm totally stumped. :(

18:25 rurumate: slester: have you tried brute force yet?

18:25 oskarkv: slester http://en.wikipedia.org/wiki/Longest_common_substring_problem

18:25 micrypt: rurumate: Thanks for your help.

18:26 slester: rurumate, nope, I was trying to find an idiomatic way to do it

18:26 oskarkv, oh! nice! I didn't think to check Wikipedia

18:27 oskarkv: slester i just googled what you said, more or less :P

18:27 slester: oskarkv, well, I'll blame startpage then, all I found was rosetta code that had shared noncontiguous substrings

18:27 oskarkv: hehe

18:28 justin_smith: suffix tree building is more straightforward to do in clojure than dynamic programming (since our default data types are immutible)

18:48 gfredericks: lol elisp is weird

18:49 I'm using defadvice to monkeypatch things and it works exactly the opposite of doing alter-var-root in clojure -- running defadvice has no immediate effect, but once you go eval the original function the monkeypatch becomes active

18:50 cfleming: Hi all - I'm using with-redefs in my tests. I just switched my tests to run on the Swing EDT and with-redefs no longer seems to be taking effect - any ideas why?

18:51 These tests worked previously, I can now debug and I see the original functions being called.

18:56 justin_smith: cfleming: that's weird - and it only happens in that specific thread?

18:57 cfleming: justin_smith: It seems to. But it's not like the EDT is magic or anything.

18:57 justin_smith: Actually, perhaps I spoke too soon. Since I just ported all my tests to the EDT, I don't know if it would also happen on other threads - I do know it used to work.

18:59 justin_smith: right, just wondering if you tried the same tests in a normal thread, that would potentially narrow down the issue

18:59 cfleming: There seem to be some problems with with-redefs and concurrency, but they're mostly around multiple threads binding the same vars simultaneously

18:59 justin_smith: it could be an error introduced by refactoring (which would be less scary and baffling)

18:59 cfleming: Unfortunately un-porting them is non-trivial.

18:59 An error in my code?!?!

18:59 justin_smith: what about just making the thread a parameter?

18:59 cfleming: Inconceivable.

19:00 Well, it's tricky - I can't pass the thread in as a parameter since to execute on the EDT I have to use invokeLater

19:01 justin_smith: a runner abstraction?

19:01 cfleming: I could pass in a function which abstracted that, though.

19:01 I'll take a look - it's tricky because this is all set up in test fixtures.

19:03 ben_vulpes: does aset-byte not alter the underlying byte array?

19:04 i'm doing (let [inits (byte-array 12)] (aset-byte inits 0 (byte 0xF9)) inits) and getting back an apparently bare array of bytes (all 0's)

19:04 justin_smith: ,(let [a (byte-array (map byte [1 2 3 4 5]))] (println (into [] a)) (aset-byte a 1 (byte 42)) (println (into [] a)))

19:04 clojurebot: [1 2 3 4 5]\n[1 42 3 4 5]\n

19:06 * ben_vulpes ponders

19:07 Bronsa: cfleming: http://sprunge.us/UAiV?clj might be what's happening

19:08 cfleming: i.e. if you're using the redefed value in a different thread, the with-redefs might be restoring the previous var root before your thread gets to deref the var

19:08 cfleming: Bronsa: I'm not quite sure what I'm looking at there.

19:08 Ah, right.

19:09 Bronsa: cfleming: the easy fix is to await the termination of the other thread before exiting the with-redefs

19:09 justin_smith: right, you want to call with-redefs inside the other scope

19:09 or that...

19:09 cfleming: Bronsa: That could be the case since the call to the redef'ed function happens in a Swing invokeLater - however I thought that was executed immediately when called from the EDT.

19:10 If anything, I would have expected problems like that previously, when this code was not run from the EDT and cross-thread issues definitely come into play.

19:11 Bronsa: cfleming: dunno, just sleep for a bunch of ms before exiting with-redefs and see if the problem goes away :)

19:12 in my repl even without sleeping, (with-redefs [+ 2] (future (reset! a +))) sets a to #'+ instead of 2

19:12 cfleming: Ohhh, looks like I was wrong - that's almost certainly what is happening - thanks.

19:12 Bronsa: np

20:09 corecode: my instaparse grammar is amazingly slow

20:09 i wish i knew why

20:09 tavoe: If I want to do http routing in clojure, I think the cannonical tools are "ring" and "compojure". Where can I find directions on using those tools? I'm finding lots of unfinished documentation, but nothing actionable. It's driving me a bit batty

20:10 weavejester: tavoe: The Ring and Compojure sites have wikis of documentation. Presumably you’ve found that not enough or confusing?

20:13 ambrosebs: corecode: have you checked it for ambiguities?

20:14 corecode: i am trying to

20:14 there seem to be internal ones, or at least there were

20:14 but it is difficult to find them

20:17 mikefikes: tavoe: LispCast has a video covering Ring and Compojure

20:17 amalloy: corecode: my experience has been that anything you can do with instaparse is quite slow, but you can try profiling it to see what's taking all the time

20:18 tavoe: mikefikes: thank you. I probably shouldn't have asked. I just need to take a step back, breath, and move more slowly.

20:20 mikefikes: tavoe: I've felt the same way. It'd be nice if there were books covering some of these libraries.

20:20 corecode: amalloy: :/

20:21 tavoe: mikefikes: It seems like a lot of the tutorials I find were written ~2011, and the libraries have changed since then.

20:21 raspasov: there is this project which a nice starting point for a whole suite of libs for Clojure dev, especially web development https://github.com/priyatam/ringo

20:24 tavoe: I've also found the http-kit documentation page to have good examples for Compojure integration http://http-kit.org/server.html

20:28 ben_vulpes: how would i assert that an argument to a function is of class [B in a pre-map?

20:29 weavejester: ben_vulpes: I think you have to do something like: (def byte-array-class (class (byte-array [])))

20:30 ben_vulpes: (instance? byte-array-class x)

20:31 ben_vulpes: ,(= (Class/forName "[B") (class (byte-array 10)))

20:31 clojurebot: true

20:31 ben_vulpes: yikes

20:31 mwell thanks weavejester

20:31 weavejester: I would not have expected that to work :)

20:32 ben_vulpes: i don't know what to expect anymore, but that seems fine for now

20:33 dbasch: ,(= (str (class (byte-array [1 2 3]))) "class [B")

20:33 clojurebot: true

20:33 dbasch: ugly though

20:33 ben_vulpes: that's probably safer.

20:34 er

20:34 hang on

20:34 maybe i'll just use the class of the output of byte-array

20:34 the output of (class (byte-array 0))

20:34 still, kinda floppy.

20:37 raspasov: you know about {:pre [] :post []} construct?

20:45 ben_vulpes: yeah, and using it raspasov.

20:45 sineer: f

20:47 corecode: hmm, my java regex pattern produces a stack overflow

20:48 maybe i don't know how java does its regex parsing

20:50 raspasov: ben_vulpes: are you developing a type checker of some sort?

20:53 gfredericks: is there something I'm supposed to set in my project.clj so that `lein deploy` goes to clojars?

21:04 corecode: you're building a regex programmatically?

21:08 corecode: no

21:08 i'm just trying to find the speed issue in my grammar

21:09 regexp matching all takes 10 ms, regexp matching all command-by-command takes 10 ms (now without stack overflow), regexp matching command + instaparse doing the repetition = 160 ms

21:10 that's a lot of overhead

21:10 ben_vulpes: raspasov: that'd be far over my pay grade :P

21:10 raspasov: no, i just want a little bit of rigidity around function inputs and outputs.

21:11 raspasov: haha ok :)

21:11 yea, makes sense

21:11 ben_vulpes: i played with haskell for the past three weeks and now all new functions that i write come complete with :pre conditions at the very least :D

21:11 ,(.toByteArray (bigint 60002))

21:11 clojurebot: #<IllegalArgumentException java.lang.IllegalArgumentException: No matching field found: toByteArray for class clojure.lang.BigInt>

21:12 dbasch: ,(.toByteArray (biginteger 1))

21:12 clojurebot: #<byte[] [B@c9bbcb>

21:12 dbasch: ,(class (bigint 1))

21:12 clojurebot: clojure.lang.BigInt

21:13 dbasch: ,(class (biginteger 1))

21:13 clojurebot: java.math.BigInteger

21:14 ben_vulpes: thanks, dbasch

21:16 ,0x0000ea62

21:16 clojurebot: 60002

21:16 ben_vulpes: man

21:16 i have no idea what i'm doing

21:17 i think that i want to write a function that takes in bigintegers like 60002 and then returns a byte array that will serialize to 62ea0000 over tcp

21:17 corecode: intbuffer

21:17 ?

21:19 or does biginteger serialize like you want?

21:23 dbasch: java bigintegers can have arbitrary length

21:23 integers and longs are fixed

21:23 4 and 8 bytes respectively

21:25 ben_vulpes: it looks like using .putInt into a bytebuffer and then getting the contents of that bb into a buf will work

21:25 but it's the wrong endianness

21:25 :(

21:25 oh well, pick it up again later i suppose

21:26 corecode: you can change the endinaness of a buffer

21:26 java with binary data sucks

21:27 ben_vulpes: so im learning

21:33 yedi: is there a function to replace all occurrences of a specific substring in a string to to a different string

21:34 corecode: clojure.string/replace

21:40 :/ this regexp is way faster than the parser... i might have to write a parser manually :(

22:02 TEttinger: well clojure just helped me solve the NPR sunday puzzle

22:03 Name a certain country. Change one letter in its name to a new letter and rearrange the result to name another country's capital. Then change one letter in that and rearrange the result to name another country. What geographical names are these?

22:09 yedi: corecode: ty btw, im pretty dumb

22:16 squeedee: justin_smith: thanks again man. I really like this solution https://github.com/squeedee/lsystem/commit/04fa8e077b8f13e9d9fad80be24e55608b76c8e0

23:57 havenwood: just a silly aside, but a Ruby FizzBuzz with Transducers: https://gist.github.com/havenwood/c5c5b48bd96b77bea53d

Logging service provided by n01se.net