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00:03 lewis1711: is there something like "range" that goes to the upper bound?
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00:05 didi: rudybot: (range 10)
00:05 rudybot: didi: your sandbox is ready
00:05 rudybot: didi: ; Value: (0 1 2 3 4 5 6 7 8 9)
00:05 didi: lewis1711: Like that?
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00:05 jonrafkind: i guess he wants it to hit 10
00:05 lewis1711: yeah
00:05 jonrafkind: isnt it a trivial problem.. just use add1
00:07 lewis1711: sure, but if it existed I'd used it
00:07 didi: rudybot: (define (enumerate n) (range (add1 n)))
00:07 rudybot: didi: Done.
00:07 didi: rudybot: (enumerate 10)
00:07 rudybot: didi: ; Value: (0 1 2 3 4 5 6 7 8 9 10)
00:07 didi: rudybot: (define (enumerate n) (range 1 (add1 n)))
00:07 rudybot: didi: Done.
00:07 didi: rudybot: (enumerate 10)
00:07 rudybot: didi: ; Value: (1 2 3 4 5 6 7 8 9 10)
00:09 lewis1711: I should've been more clear. It wasn't a problem i was having, more "Does this exist?". but thanks anyway
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00:12 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/x74usQ
00:12 RacketCommitBot: racket/master 73395ee Neil Toronto: Finished and documented counting and binning functions in `math/statistics'
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00:51 RacketCommitBot: [racket] plt pushed 2 new commits to master: http://git.io/dkK2rQ
00:51 RacketCommitBot: racket/master af8d021 Neil Toronto: Documented correlation and covariance
00:51 RacketCommitBot: racket/master 04fbb02 Neil Toronto: Changed argument order of binning functions for consistency with other...
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04:52 lewis1711: is a built in way to apply a function to a list at only one index? Like a "partial" map?
04:53 mithos28: You want a list of functions afterwards?
04:54 lewis1711: no, say apply a function only ot index one in a list
04:54 lewis1711: (partial-map add1 0 '(1 2)) => '(2 2)
04:54 mithos28: so list-update?
04:54 lewis1711: rudybot: list-update
04:54 rudybot: lewis1711: there is list-update which takes an index not an equality procedure
04:54 mithos28: rudybot: init racket
04:54 rudybot: mithos28: your sandbox is ready
04:55 mithos28: rudybot: (require unstable/list)
04:55 rudybot: mithos28: Done.
04:55 mithos28: rudybot: (list-update '(1 2) 0 add1)
04:55 rudybot: mithos28: error: reference to an identifier before its definition: list-update in module: 'program
04:55 lewis1711: there's a lot of juicy stuff in unstable/list. I hope it stabilises
04:56 mithos28: lewis1711: Unlikely
04:56 mithos28: Just use it as it is now, and if it changes rewrite the small function in your module
04:56 Havvy: Why unlikely?
04:57 mithos28: Because of how long some of those functions have been there without making it in
04:58 lewis1711: I don't have list-update here :/
04:58 mithos28: lewis1711: Are you not using 5.3.1?
04:58 lewis1711: 5.3
04:59 lewis1711: that'll be it
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06:49 asvil: http://bpaste.net/show/LBVtR9OJPsBReGQfW0NG/ Got this error while (require drracket)
06:49 asvil: hi all. ^
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09:55 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/pD-y0w
09:55 RacketCommitBot: racket/master 8907daf Robby Findler: make the queue-callback/res function queue low-priority callbacks...
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12:26 asvil: It seems that drracket from git repo does not work.
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12:33 asumu: asvil: hmm, that's odd. Last I checked it worked for me. I'll pull the most recent changes and see...
12:33 asumu: Probably worth submitting a bug report.
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12:36 asvil: asumu: please tell, what is the way to build drracket? I have used "configure && make && gracket/gracket3m (require drracket)"
12:37 mithos28: asvil: you missed make install
12:37 bremner: which actually is the slow step, surprising to some people
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12:41 asvil: mithos28: make install failed: get-info: info file has illegal #lang or #reader
12:42 mithos28: asvil: I don't know what to do in that case
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12:57 asumu: asvil: it's easiest if you follow the steps in https://github.com/plt/racket/blob/master/src/README to the t.
12:57 asumu: If that doesn't work, then there might be a bug.
12:57 asvil: after make install (even after make error) drracket feels better, progress bar goes to end, but main windows is not showed.
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14:36 ozzloy: rudybot, init racket
14:36 rudybot: ozzloy: your sandbox is ready
14:38 ozzloy: rudybot, (define (enumerate n) (map add1 (range n)))
14:38 rudybot: ozzloy: Done.
14:38 ozzloy: (enumerate 10)
14:38 ozzloy: rudybot, (enumerate 10)
14:38 rudybot: ozzloy: ; Value: (1 2 3 4 5 6 7 8 9 10)
14:39 ozzloy: that's what i thought
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15:02 pgiarrusso: Hi all!
15:03 pgiarrusso: I'm confused about installing Racket on Mac OS X (by which I mean, I would argue that the "installer" is not very usable, but I'm not 100% sure).
15:03 pgiarrusso: Is this channel an appropriate place?
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15:33 Haffe: Sure.
15:34 Haffe: I am running Drracket on Osx.
15:36 soegaard: pgiarrusso: What is the issue?
15:37 pgiarrusso: OK!
15:37 pgiarrusso: The issue is not technical, is basically a usability issue
15:37 pgiarrusso: The installer comes in a DMG without installation instruction
15:37 pgiarrusso: a
15:38 pgiarrusso: and the documentation explains that "installing" DrRacket (in some way) allows me to run the "race" command
15:38 pgiarrusso: without saying how
15:38 Haffe: Mount dmg, drag app to Applications folder?
15:38 pgiarrusso: I know how to get raco to work, but it's not just what you descrybe
15:38 pgiarrusso: *describe
15:39 soegaard: Do you have a link to the documentation in question?
15:39 pgiarrusso: http://docs.racket-lang.org/getting-started/index.html
15:39 mithos28: I don't believe there is any documentation on the 'installing' the command line tools for OSX
15:40 pgiarrusso: Indeed
15:40 soegaard: I see your point.
15:40 pgiarrusso: mithos28, you're right
15:40 pgiarrusso: but the README says "Racket comes with extensive documentation: use DrRacket's `Help' menu,
15:40 pgiarrusso: or run `raco docs'.  Also, visit us at http://racket-lang.org/ for more
15:40 pgiarrusso: Racket resources."
15:40 mithos28: The issue is I don't think there is a standard way to install command line tools in os x
15:41 pgiarrusso: mithos28: you can document how to do it manually (and I'd be fine with that)
15:42 pgiarrusso: or have an mpkg installer do it (there are also semi-standard ways to do that, but I'm no expert: http://stackoverflow.com/a/9048601/53974)
15:42 mithos28: pgiarrusso: You need to edit your PATH
15:42 (quit) neilv: Quit: Leaving
15:42 pgiarrusso: Yes, I know that
15:43 pgiarrusso: but I'm just asking for documentation on it
15:44 pgiarrusso: Personally, I can figure it all out, but when I get a DMG I'm usually not *supposed* to figure out anything
15:44 mithos28: Right, which is why adding documentation is the wrong solution
15:44 pgiarrusso: I see two choices:
15:45 pgiarrusso: 1) automate everything with an mpkg installer
15:45 pgiarrusso: (better, if possible)
15:45 pgiarrusso: 2) use a zip instead of a dmg and add documentation. However ridiculous it might sound, I believe the extension has in practice a certain semantics.
15:47 pgiarrusso: Also, as a cosmetic point, am I really supposed to have a bin directory in my /Applications folder?
15:47 pgiarrusso: (yes, under a folder, but still...)
15:47 mithos28: why not?
15:48 pgiarrusso: By convention, within /Applications there are only icons to click
15:48 mithos28: Can you link to an apple doc saying that?
15:49 mithos28: Adobe doesn't follow that last time I used their software
15:49 mithos28: Diablo3 doesn't follow that
15:49 pgiarrusso: On that, I have only anecdotical evidence which includes MacTeX and MacPorts
15:50 pgiarrusso: but well, I guess that I should accept your evidence
15:51 pgiarrusso: I still think it's ugly since those programs are not designed to be clicked from there, but that's just my opinion I guess...
15:52 mithos28: Where should they be installed?
15:53 pgiarrusso: solutions include /opt/racket (my first attempt) or /usr/local (including /usr/local/something)
15:53 mithos28: How does that work with multiple versions of racket?
15:54 mithos28: That loses the fact that currently everything (modulo prefs) is installed in that folder in Applications
15:55 pgiarrusso: If you want multiple versions at the same time from the command line, you need version numbers in the name and some default selection mechanism (as for Python and Java)
15:56 mithos28: and can be installed somewhere else without admin privleges
15:56 pgiarrusso: What I did on my system was simply to hide the bin, etc. folders (from the GUI only), like /bin, /usr and so on
15:57 mithos28: The solution for changing your path, is to add a file in paths.d
15:58 mithos28: in /etc/paths.d
15:58 pgiarrusso: I see, interesting!
15:58 pgiarrusso: But that requires admin privileges, right?
15:59 mithos28: right, blame os x for not having a ~/.paths.d
15:59 mithos28: man path_helper for how it is used
15:59 pgiarrusso: But you have an environment.plist in the home ;-)
16:00 pgiarrusso: the answer I linked suggests altering ~/.MacOSX/environment.plist
16:01 pgiarrusso: which should be doable programmatically with plutil(1)
16:01 pgiarrusso: I retract, plutil can't do that
16:02 mithos28: If you really want this fixed, file a bug report and provide the couple of options we have discussed.
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16:03 pgiarrusso: mithos28: thanks for the feedback, I'm going to do that
16:04 mithos28: Does anyone know if racket has a multicast queue? I.e. like async-channel but with multiple readers?
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16:51 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/o1ievw
16:51 RacketCommitBot: racket/master 5b016b4 Matthew Flatt: win32: support MinGW build...
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17:00 RacketCommitBot: [racket] plt pushed 2 new commits to master: http://git.io/shYl3Q
17:00 RacketCommitBot: racket/master bca4f47 Matthew Flatt: fix `configure' typo for MinGW
17:00 RacketCommitBot: racket/master 8f3cdd3 Matthew Flatt: fix miscapitalization...
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17:18 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/B75Kxw
17:18 RacketCommitBot: racket/master 6aa6dc0 Greg Hendershott: Add a Markdown rendering mode to Scribble....
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19:03 dyoo: mye: I pushed up new documentation for that ordered set library (https://github.com/dyoo/data-red-black/blob/master/data/red-black/ordered-set.scrbl).  You should be able to git pull to grab it.  Hope this helps!
19:03 rudybot: http://tinyurl.com/by77n48
19:05 (quit) mithos28: Quit: mithos28
19:05 lewis1711: dyoo: ordered sets? useful :)
19:06 dyoo: I hope so; let me know if you find them handy
19:07 mye: dyoo: Cool. I skimmed the tree code for a bit and wondered about the differences between augmented and positional. They don't seem to share code ?!
19:07 dyoo: mye: specialized.  Basically I took positional.rkt, copied and pasted.
19:07 mye: I'm now playing around with annotated parse trees so maybe I can use the augmented version for the annotations.
19:08 dyoo: mye: there are certain optimizations I made in positional, knowing how the update function worked.  the augmented version can't make those assumptions
19:09 mye: however, a representation as a hash table where both the parsed values and the vanilla syntax objects are in memory would also allow me to do what I want to do
19:11 dyoo: mye: coo; what will you be doing with the parse trees, out of curiosity?
19:11 dyoo: s/coo/cool
19:11 mye: dyoo: I need idempotent parsing/unparsing
19:11 lewis1711: trying to translate some haskell into racket. http://zvon.org/other/haskell/Outputprelude/iterate_f.html anyone know how to do the equivalent of this list function?
19:12 dyoo: Ah, I remember you were talking about this before.  Ok, so whitespace and comments too, right?
19:12 mye: so the first insight was that I want syntax objects and http://www.neilvandyke.org/racket-progedit/
19:12 lewis1711: (doesn't need to be infinite)
19:12 mye: now I must keep track of the edits, not sure how to do that though
19:13 dyoo: lewis1711: checking the sequence docs to see if someone's already coded it...
19:14 lewis1711: those haskell people may be strange with their monads and purity but they do have some nice list functions
19:14 dyoo: lewis1711: is sequence-fold the same thing?  Hmmm...
19:14 dyoo: checking...
19:15 lewis1711: http://docs.racket-lang.org/srfi-std/srfi-41/srfi-41.html?q=iterate#stream-iterate hmm
19:15 rudybot: http://tinyurl.com/bgxbstu
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19:17 dyoo: rudybot: (define my-seq (sequence-fold (lambda (x acc) (* acc 2)) 1 (in-cycle 'dontcare)))
19:17 rudybot: dyoo: your sandbox is ready
19:17 rudybot: dyoo: error: in-cycle: expected argument of type <sequence>; given: 'dontcare
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19:17 dyoo: (define my-seq (sequence-fold (lambda (x acc) (* acc 2)) 1 (in-cycle '(dontcare))))
19:17 dyoo: gah...
19:18 dyoo: rudybot: (define my-seq (sequence-fold (lambda (x acc) (* acc 2)) 1 (in-cycle '(dontcare))))
19:18 rudybot: dyoo: error: *: expects type <number> as 1st argument, given: 'dontcare; other arguments were: 2
19:18 lewis1711: the srf-41 thing looks exactly like iterate, except.. are srf-41 streams racket streams? may get confusing
19:21 lewis1711: oh it looks like they are
19:21 dyoo: lewis1711: https://gist.github.com/4247639
19:21 dyoo: here you go
19:22 dyoo: sorry, I'm pretty sure we can stitch it together from existing elements in the sequence library, but I'm practicing writing sequences with the primitive make-do-sequence
19:22 lewis1711: no problem :)
19:22 lewis1711: well I will see what make-do-sequence does before I decide
19:23 dyoo: I'll add this to the reference docs for make-do-sequence when I get the chance.
19:23 dyoo: it's the primitive for making sequences from scratch.  Basically, you provide a few functions for determining inital element, how to get to the next, and how to stop.
19:24 dyoo: the problem being it's very general, and the docs don't show simple example usage, so the function's fairly inscrutable.  (example: why the heck does it take 3 separate functions to determine sequence termination?!)
19:24 mye: I tried writing sequence-map3 a couple days ago (with make-do-sequence) failed, the discovered sequence-add-between :-)
19:25 mye: it would call the given function with three elements at a time
19:25 dyoo: hmmm...
19:25 mye: but I just wanted it to implement what add-between does so I'm set
19:25 lewis1711: wow, the srfis still have a lot of functionality that racket doesn't. just looking at 43(vectors) now
19:26 lewis1711 still keeps discovering part of racket he didn't know existed every few days
19:27 dyoo: lewis1711: racket is huge.  If the intro cs students actually saw that their "toy" language has all of this stuff, I'm not sure if they'd be excited or demoralized.  :)
19:27 mye: dyoo: both!
19:28 lewis1711: I am so incredibly jealous that their are CS departments there that start with racket
19:28 dyoo: Yikes; didn't notice it's getting dark here in utah.  Better start walking home for dinner. Talk later!
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21:58 lewis1711: I think I think it's better to write out complicated procedures the long way first rather than trying to factor away repetition into separate procedures too early.
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22:44 lewis1711: further note to self - do not try and literally translate haskell or it looks like this: http://pastebin.com/mBpQwt3R :/
22:45 offby1 clicks the "Report Abuse" link
22:45 offby1: apparently you're a human compiler.
22:46 lewis1711: LOL
22:51 ijp: personally, my scheme is too haskelly, and my haskell too schemey
22:51 lewis1711: the haskellers don't like it when you do "div 1 2"
22:52 jonrafkind: what happens when you do that
22:52 ijp: you get 1
22:52 lewis1711: my point was, to them it's clearer to do " 1 `div` 2"
22:53 lewis1711: (infix vs prefix)
22:53 jonrafkind: thats crazy talk
22:53 ijp: they are very parenphobic too
22:53 jonrafkind: humans have been using prefix for hundreds of years!
22:54 lewis1711: ijp: oh yes they love their $ don't they
22:54 lewis1711: jonrafkind: honestly I got ever that aspect of LISP really, really quickly. i don't get why it's such a sticking point for people.
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22:55 ijp: lewis1711: who doesn't love them some $
22:55 jonrafkind: maybe because people have been using infix syntax for hundreds of years..?
22:55 lewis1711: most people aren't that old :)
22:55 jonrafkind: touche
22:56 jonrafkind: im going to start a new language that uses *#@ instead of left paren and &!^ for right paren and then when people complain about the syntax ill say 'theyre obviously just *#@ and &!^-phobic!'
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22:57 offby1: obviously
22:57 jonrafkind: clearly theres no other explanation
22:59 lewis1711: oh, no i do think there are too many parens still. but for me that mainly comes down to scheme being more minimalist and not believe much in sugar
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23:09 lewis1711: offby1: http://pastebin.com/vtkzL2dd slightly less abusive?
23:09 offby1: indeed
23:10 lewis1711: I am wondering if there is a shorter way to shuffle every elemement in a list of lists
23:10 lewis1711: (match l [(list z x y) (list x y z)])
23:10 lewis1711: probably not
23:11 lewis1711: oh well it works and I am sick of the problem
23:12 offby1: (map shuffle list) ?
23:14 lewis1711: it's two deterministic shuffles
23:14 lewis1711: one is the match I posted, the other is just a reverse
23:15 lewis1711: actually the proc at line 13 is the worst offender. full of haskellisms like using infinite streams. though I still don't really get what it does
23:19 lewis1711: oh I don't have to convert to lists until the end, i can jsut use stream-car from srfi42
23:23 lewis1711: ... I don't need streams at all. herp
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