00:27 lewis1711: is there any way to control how structs are displayed? I mean I know you can do #:transparent and all that, but I'd like finer grained control
00:28 lewis1711: I deally I'd like each instance of this struct type to display the name given to it, but IDK
00:29 jonrafkind: yea theres a struct property for printing
00:31 lewis1711: oh they were in reference
00:31 jonrafkind: http://docs.racket-lang.org/reference/Printer_Extension.html?q=prop%3Aprint&q=struct%20property#(def._((lib._racket/private/base..rkt)._gen~3acustom-write))
00:31 rudybot: http://tinyurl.com/d8plzcs
00:31 jonrafkind: i guess this one
00:32 lewis1711: oh sweet that's something to go off
00:32 jonrafkind: and an example!
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01:32 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/ukNLZQ
01:32 RacketCommitBot: racket/master 8aa623c Neil Toronto: Made plots in `plot' and `math' render nicely in PDFs (plots in docs are picts now)...
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02:24 sw2wolf: What's the result of `raco setup x11-racket rwind` ?
02:26 jonrafkind: it builds those collections
02:27 jonrafkind: you technically don't need to do it because they dont add any raco commands
02:27 jonrafkind: building them just means they are macro expanded
02:27 jonrafkind: and the .zo files are written out
02:27 sw2wolf: then i should use `raco exe ...` to make a executable ?
02:27 jonrafkind: yea you can do that
02:28 jonrafkind: if I were you i would just make a shell script in ~/bin that does 'racket /path/to/rwind/rwind.rkt'
02:28 jonrafkind: so that you can git pull rwind as needed and the executable doesn't need to change
02:29 sw2wolf: good suggestion,thx
02:30 sw2wolf: there already is run.sh in RWin src .
02:30 jonrafkind: oh yea use that
02:32 sw2wolf: BTW, the output of `raco exe` is really native code ?
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02:33 jonrafkind: no it just combines the racket binary along with the .zo's of the code you are using
02:34 jonrafkind: it packs the .zo's at the end of the binary or something
02:34 sw2wolf: `file rwin` shows "rwind: ELF 32-bit LSB executable, Intel 80386, version 1 (FreeBSD), dynamically linked (uses shared libs), for FreeBSD 9.0 (900044), not stripped"
02:34 jonrafkind: yea thats the racket binary
02:35 sw2wolf: i see, thx
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02:35 jonrafkind: or something
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02:48 sw2wolf: How to activate racket mode in emacs ?
02:49 jonrafkind: no idea.. im a vim guy
02:50 jonrafkind: use either paredit or guiser, or something like that
02:50 jonrafkind: ive heard those words thrown around when emacs was mentioned
02:50 sw2wolf: I will google, thx
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06:42 bremner: actually, that is "geiser", but they both left.
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07:06 tim-brown: rudybot: racket-init
07:06 rudybot: tim-brown: 'racket' is basically 'racket -I racket/init'
07:07 tim-brown: rudybot: init typed/racket
07:07 rudybot: tim-brown: your typed/racket sandbox is ready
07:07 tim-brown: (fixnum? 10000000000000000)
07:07 tim-brown: rudybot: (fixnum? 10000000000000000)
07:07 rudybot: tim-brown: ; Value: #f
07:07 rudybot: tim-brown: ; stdout: "- : Boolean\n"
07:08 tim-brown: is the size of a fixnum architecture dependent?
07:08 tim-brown: on my 64-bit the above is #t
07:08 tim-brown: but... the following still fails:
07:08 tim-brown: rudubot: (: ten^16 Nonnegative-Fixnum)
07:08 tim-brown: rudybot: (: ten^16 Nonnegative-Fixnum)
07:08 rudybot: tim-brown: Done.
07:09 tim-brown: rudybot: (define ten^16 10000000000000000)
07:09 rudybot: tim-brown: error: #<undefined>:1:15: Type Checker: Expected Nonnegative-Fixnum, but got Positive-Integer in: (quote 10000000000000000)
07:10 tim-brown: also, the type of modulo does not include (Natural Nonnegative-Fixnum -> Nonnegative-Fixnum), which i would have expected
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07:13 tim-brown: oh, never mind that... Natural is a sub-type of Integer, isn't it!
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07:24 tim-brown: soegaard: do you have type annotations for your math.plt package?
07:24 soegaard: tim-brown: Erm.
07:25 soegaard: What do you mean by type annotations?
07:25 tim-brown: oh, type declarations
07:25 soegaard: Ah! you mean the planet one?
07:25 tim-brown: the version i've seen is non-typed racket
07:25 tim-brown: i mean the planet one.
07:25 tim-brown: do you have another secret one?
07:26 soegaard: https://github.com/plt/racket/tree/master/collects/math/private/number-theory
07:26 rudybot: http://tinyurl.com/cfzgabb
07:26 soegaard: I ported it to TR for the new math collection.
07:26 tim-brown: will look at that
07:27 soegaard: There is even documentation :-)
07:28 soegaard: http://pre.racket-lang.org/docs/html/math/index.html?q=math
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08:34 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/6CAz7A
08:34 RacketCommitBot: racket/master 569af52 Matthew Flatt: raco setup: turn off synchronous mode for doc database...
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08:55 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/I8mnqw
08:55 RacketCommitBot: racket/master ba89a5d Robby Findler: fix bug in error checking code
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09:01 greghendershott: Good morning. I'm trying `scribble —pdf' for the first time but getting "! LaTeX Error: File `stabular.sty' not found." BasicTeX-2012 on OSX. I know nothing about TeX. Can someone point me in right direction — who is supposed to provide stabular.sty — Racket or TeX?
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09:24 greghendershott: Well I got it working on linux (EC2 instance). Unfortunately now it seems any pdflatex warnings are treated as errors by scribble which aborts the whole thing. Will work on that next.
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10:03 soegaard: greghendershott: I can recommend TeXliveL: http://www.tug.org/texlive/acquire-netinstall.html
10:10 greghendershott: soegaard: Thanks for the recommendation. "MacTeX" is what TeX Live recommends to use on OSX. Maybe the missing stabular.sty is because I chose to download the "basic" edition instead of the full in all its 2 GB (!) of glory.
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10:10 greghendershott: Are you using TeXLive on OSX?
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10:12 soegaard: Yes. At some point I just gave up trying to figure out how the which TeX packages I needed and how to install them.
10:12 greghendershott: soegaard: I think I can appreciate why. :)
10:12 soegaard: :-)
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10:14 greghendershott: OK well I guess I have the 2 GB to spare. Seems like a lot just to make a PDF, but, so be it.
10:14 greghendershott: Thanks for the advice.
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10:20 soegaard: On the upside, you will also install some nice utilities such as imagemagick and various programs for manipulating pdfs.
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10:41 Grrossi: Hey guys
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10:41 Grrossi: Why can't i use define inside an (if )?
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10:57 greghendershott: Grrossi: You would have to put the define instead of a `let'.
10:57 greghendershott: For example: (if #t (let () (define x 0) x) #f)
10:57 greghendershott: Of course if you're using a `let' to do that, you could use `let' instead of `define':
10:58 greghendershott: (if #t (let ([x 0]) x) #f)
10:58 greghendershott: Anyway, the "true" and "false" arms of if need to be a single expression. Therefore you need to use let.
10:59 greghendershott: To wrap multiple expressions into one.
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10:59 asumu: Grrossi: you could also use `cond`, which allows definitions in each branch.
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11:00 greghendershott: That's great advice. Coming from another language, you may reach for `if' automatically, but often `cond' is a better choice in Racket (or Scheme).
11:02 bremner: or begin
11:03 bremner: at least, I think so.
11:03 bremner: rudybot: init racket
11:03 rudybot: bremner: your sandbox is ready
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11:03 bremner: rudybot: eval (if #t (begin (define x 1) x) 0)
11:03 rudybot: bremner: error: #<undefined>:1:14: define: not allowed in an expression context in: (define x 1)
11:03 greghendershott: Actually define doesn't work there
11:03 bremner: oops
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11:06 Grrossi: wow, i thought the error was bcuz of the if
11:06 Grrossi: bur after changing, still got the same "not allowed in expression context" error
11:07 bremner: well, I never did understand some racket-folk's enthusiasm for the local define ;)
11:07 Grrossi: http://pastie.org/5437902
11:07 Grrossi: It's on this function
11:07 Grrossi: It says it's on the first define actually
11:08 Grrossi: (define resp '())
11:08 greghendershott: Grrossi: You have way more `begin's than you need. :)
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11:09 Grrossi: I do? heh
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11:10 bremner: does that inner define really want to be a set! ?
11:10 Grrossi: Yeah, it should be a set!
11:10 bremner: not that I'm condoning your style ;)
11:11 Grrossi: It's my first program im lisp actually, i'm way more used to other languages
11:11 Grrossi: And lisp is kinda unique
11:11 Grrossi: define: not allowed in an expression context in: (define list-aux list2)
11:11 Grrossi: This is the error
11:12 bremner: let would definitely make sense there
11:12 Grrossi: Where should i use let and should i use begin?
11:13 Grrossi: I mean, what's the difference?
11:13 bremner: let introduces a variable binding; begin is for sequencing
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11:14 bremner: Grrossi: do you know the book "How to Design Programs"? it might be a nice help.
11:15 bremner: rudybot: eval (begin 1 2)
11:15 rudybot: bremner: ; Value: 2
11:15 Grrossi: Is that for lisp or general programs design?
11:15 bremner: Grrossi: it teaches programming using racket
11:15 bremner: rudybot: eval (let ((x 2) x))
11:15 rudybot: bremner: error: #<undefined>:1:0: let: bad syntax in: (let ((x 2) x))
11:15 bremner: rudybot: eval (let [(x 2)] x)
11:15 rudybot: bremner: ; Value: 2
11:16 bremner: rudybot: eval (let [(x 2) (y 3)] (+ x y))
11:16 rudybot: bremner: ; Value: 5
11:16 bremner: Grrossi: begin is mainly useful for side-effects (like set!)
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11:20 Grrossi: But still
11:20 Grrossi: Do you know why i get the expression error?
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11:33 asumu: Grrossi: it's as the error says. A definition is not an expression, and you can't put it in a place that expects an expression.
11:33 asumu: (almost everything is an expression in Racket... but not definitions)
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12:32 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/4_UafA
12:32 RacketCommitBot: racket/master f8793c0 Robby Findler: fix one way that rectangles could have the left side be to the...
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13:16 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/KmLw4g
13:16 RacketCommitBot: racket/master 90714fb Danny Yoo: Implements a rb-tree based version of the token tree, and fixes bugs in red-black.rkt....
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13:24 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/DZB1uQ
13:24 RacketCommitBot: racket/master df5ee4c Robby Findler: fix some right/top mixups...
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13:24 groms: Hi, do you guys prefer the racket vim plugin referred to in the guide or the default scheme.vim with g:is_mzscheme?
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13:27 groms: actually the guide doesn't even mention the latter, but suggests using the lisp filetype
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13:32 Blkt: good evening everyone
13:33 asumu: groms: the Racket vim plugin has more Racket-specific stuff.
13:35 groms: I figured it might
13:36 asumu: I just use evil-mode (vim emulation) on emacs. Works pretty well for editing Racket code. YMMV though.
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15:45 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/XS1KgA
15:45 RacketCommitBot: racket/master 43b0e21 Danny Yoo: Optimize stick-to-next-sexp? to speculative match before using forward-match....
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17:03 lewis1711: shouldn't hash-keys return a set?
17:03 lewis1711: maybe not. I just love using sets
17:03 asumu: It could, I suppose.
17:04 asumu: That'd be a backwards incompatible change though.
17:04 jonrafkind: list->set
17:04 asumu: Better to just use member than convert to a list though.
17:04 asumu: *set
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17:05 lewis1711: why's that?
17:05 asumu: Probably more efficient unless you really need set operations.
17:06 lewis1711: what's the big O time for the union of two sets? would it be the same as a list append, O(n)?
17:07 asumu: The docs say yes.
17:07 carleastlund: lewis1711, should be O(n) in general
17:07 asumu: Potentially a different set representation could be faster than that.
17:08 carleastlund: I can't think of one that would be better for that, and as good for everything else.
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17:50 francisl: How do I uninstall whalesong?
17:54 (quit) mye: Quit: mye
17:54 dyoo: You can use the raco planet tools to remove it
17:54 dyoo: Give me a sec...
17:55 dyoo: francisl: $ raco planet remove dyoo whalesong.plt 1 19
17:55 dyoo: assuming that you've installed version 1.19 of Whalesong.
17:57 francisl: ok, I tried with the slash … ok,  thanks its working
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17:57 RacketCommitBot: [racket] plt pushed 3 new commits to master: http://git.io/SpzZUA
17:57 RacketCommitBot: racket/master 8c91dec Asumu Takikawa: Index `raco scribble` command...
17:57 RacketCommitBot: racket/master 5e54ff9 Asumu Takikawa: Index `raco pkg` command
17:57 RacketCommitBot: racket/master 6a88812 Asumu Takikawa: Add doc pages for remaining `raco` commands...
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17:57 dyoo: cool; glad to help!
17:58 francisl: is there any plan to reduce the size of generated javascript? I tried with a little script a it took a huge 1mo
18:01 lewis1711: http://pastebin.com/ZrfjiuzB this test should pass shouldn't it?
18:01 lewis1711: they're not eq? or eqv? but they are equal?
18:02 lewis1711: guess I'll just do (check-equal? (equal? actual expected) #t)
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18:03 dyoo: francisl: yes, I do want to improve the output so it's not so large, yes.  mid-term plans are to use the closure compiler in aggressive optimization mode, so it can do a better job
18:03 dyoo: lewis1711: what's table-keys?
18:04 lewis1711: agh, my mistake, the problem was I was comparing a #hash(... with (make-hash ...)
18:04 lewis1711: not the first time that's caught me, since they both print the same
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18:06 dyoo: Yeah, mutability is part of the equal? test on hashes, according to the third paragraph in http://docs.racket-lang.org/reference/hashtables.html
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18:08 francisl: dyoo: clojurescript use google closure, which didn't result in important size reduction. I which you better luck.
18:10 greghendershott: lewis1711: I've done the same thing, also writing unit tests. At one point I'd even convinced myself you couldn't equal? hashes "because the order isn't guaranteed", which was silly. It was just mutability. Gah. :)
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18:27 lewis1711: .decide
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19:25 asumu: Hmm, I see Boeing is looking for someone with Lisp/Racket experience. http://jobs.acm.org/c/functions/printjob.cfm?site_id=1603&jb=11460270
19:30 jonrafkind: exciting
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19:42 RacketCommitBot: [racket] plt pushed 2 new commits to master: http://git.io/SPcTRQ
19:42 RacketCommitBot: racket/master 6d56491 Robby Findler: make unhighlight-range remove only the first matching range, not...
19:42 RacketCommitBot: racket/master 43e7150 Robby Findler: clean up the text:searchable docs based on recent changes
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20:09 samth: asumu, tweet it!
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21:44 jrslepak: "Must be able to work at a 10,000 ft. elevation."  sounds like an interesting job there
21:44 jrslepak: (and the Secret clearance probably means interesting things too)
21:45 jonrafkind: my brother got security clearance once. it wasn't very exciting
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21:47 jrslepak: we had someone visit the lab today, doing a background check on a student here
21:47 jrslepak: was fun to see people's reactions
21:48 asumu: "I hear he's a Racketeer... maybe even a Larcenist"
21:49 jrslepak: heh
21:49 jrslepak: well, none of us really knew the student in question
21:49 jonrafkind: the fbi asked me about someone in my building, but i didnt know them at all so i couldnt provide any juicy details
21:51 jrslepak: all I could tell the guy was that on Thursday afternoons, we sometimes see people who'd probably know that student
21:52 jonrafkind: and they exchange money for a white substance
21:52 jrslepak: I suppose that's a common enough activity
21:53 jrslepak: (toilet paper, milk, flour, sugar, eggs, ...)
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21:54 RacketCommitBot: [racket] plt pushed 2 new commits to master: http://git.io/pmAWZw
21:54 RacketCommitBot: racket/master 486e950 Jon Zeppieri: change 'case' to use equal?
21:54 RacketCommitBot: racket/master c0abe85 Matthew Flatt: make `case' in `r5rs' and `r6rs' still use `eqv?'...
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21:56 sw2wolf: How to input 0x3bb(which means lambda) in emacs ?
21:56 sw2wolf: λ
21:57 sw2wolf: now i can just copy it from other racket source code
22:01 sw2wolf: What does "#;" mean in the following code:
22:01 sw2wolf: #;(define event-thread (thread run-event-loop))
22:01 sw2wolf: #;(thread-wait event-thread)
22:01 asumu: You probably want to look into emacs input modes http://emacswiki.org/emacs/InputMethods
22:02 asumu: How you do it depends on your emacs setup...
22:02 sw2wolf: ok
22:02 asumu: #; is an s-expression comment. It comments out the next s-expression.
22:03 asumu: See the docs: http://docs.racket-lang.org/search/index.html?q=%23%3B
22:03 sw2wolf: Can we use ";" instead of "#;" ?
22:04 asumu: Sometimes. They don't mean the same thing. ; is just to the end of the line.
22:04 sw2wolf: oh, "#;" supports multiple lines
22:04 sw2wolf: thx
22:05 jonrafkind: you can also use #| ... |# to block comment arbitrary text
22:05 sw2wolf: yes
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22:16 ewemoa: is it possible to tell whether code is executing during a require (require "code.rkt") or via command line invocation: racket.exe code.rkt -- and if so, any hints / leads?
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22:19 asumu: ewemoa: maybe you can use a main submodule? http://docs.racket-lang.org/guide/Module_Syntax.html?q=main#(part._main-and-test)
22:20 ewemoa: asumu: thanks for the hint -- will take a look
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22:28 ewemoa: asumu: module* with main seems to work just fine -- thanks a lot!
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22:42 asumu: No problem.
22:43 asumu: http://en.wikipedia.org/w/index.php?title=Racket_(programming_language)&oldid=525038643 <-- spot the vandalism :p
22:45 ewemoa: ha ha ha ha ha
22:45 nilyaK: rocket man? :P
22:49 bremner: I like the hello world example ;)
22:51 nilyaK: heh
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22:59 ewemoa: hmm, no reference to PLT Scheme at: https://en.wikipedia.org/wiki/Rocket_Man ;)
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