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01:52 jonrafkind: waaazzzzzzaaap
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01:57 s_chng: yo
02:02 gf3: watttthhhhhhhaaaaaaaa
02:02 jonrafkind: well hell yea
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03:18 Blkt: good morning everyone
03:25 Gertm: I'm curious about how concurrency and multi-cpu stuff are done in Racket. Where can I get more information about that? Not on how to use it, but on how it's implemented.
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05:13 tim-brown: is there any literature about modulelets?
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05:34 noelw_away: I don't think so
05:34 (nick) noelw_away -> noelw
05:35 noelw: There aren't implemented yet AFAIK
05:35 noelw: Maybe there is something in the RacketCon videos, but they aren't up yet
05:40 tim-brown: so currently still in a secret lab somewhere?
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06:10 tim-brown: is embedded-load still defined in racket?
06:11 tim-brown: vim source has an "mzscheme_base.c", which invokes embedded-load on a set (715k) of binary data
06:30 noelw: Dunno. sorry
06:32 bremner: fwiw, it is still discussed in the source
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07:57 tim-brown: sanity check please: vim builds mzscheme_base.c with:
07:57 tim-brown: /usr/local/racket-5.1.3/bin/mzc --c-mods mzscheme_base.c ++lib scheme/base
07:57 tim-brown: does this do whatever 3m magic is necessary, or is --3m necessary?
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08:39 RacketCommitBot: [racket] plt pushed 2 new commits to master: http://git.io/GQNY8Q
08:39 RacketCommitBot: [racket/master] fix potential refcount bug - Matthew Flatt
08:39 RacketCommitBot: [racket/master] fix place refcount - Matthew Flatt
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09:47 ShakDiesel: hi guys
09:48 ShakDiesel: any1 here?
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09:48 ShakDiesel: hello
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09:54 noelw: hi
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10:23 tim-brown: bremner: thanks -- i've since found out that mzscheme_base.c is produced by vim's make using mzc on base.rkt
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10:27 ShakDiesel: anyone can help me with a question?
10:27 samth: ShakDiesel: yes
10:27 ShakDiesel: sweet
10:27 samth: just ask your question
10:27 ShakDiesel: trying to string-append but i have a value that's calculated as a number and it says it needs a string
10:28 samth: try using number->string to convert it
10:28 samth: rudybot: eval (string-append "hello " (number->string 42) " ShakDiesel")
10:28 rudybot: samth: your racket/init sandbox is ready
10:28 rudybot: samth: ; Value: "hello 42 ShakDiesel"
10:29 ShakDiesel: so i can just define the number to be a string before i append it, correct?
10:29 samth: Gertm: see the paper from OOPSLA 2010 by Swaine et al, and the upcoming DLS 2011 paper by Tew et al
10:29 samth: ShakDiesel: i don't know what you mean by define
10:30 ShakDiesel: i think im confused can i show u code?
10:30 samth: yes
10:30 samth: try paste.lisp.org
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10:31 ShakDiesel: (define (household-code name house-num street postal-code)   (string-append postal-code "-" (substring name 0 4) "." (- house-num (string-length street))))
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10:33 ShakDiesel: (- house-num (string-length street)) . . . needs to be in the form string i guess
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10:39 ShakDiesel: any insight samth?
10:40 samth: use (number->string (- house-num (string-length street)))
10:42 ShakDiesel: thx ill give that  a shot
10:44 ShakDiesel: i have one more question if u dont mind
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10:46 samth: ShakDiesel: just ask your questions
10:46 samth: that's how things work on irc
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10:47 ShakDiesel: how can you find the number at position x of a certain number without the use of a string function
10:47 ShakDiesel: srry was typing
10:47 ShakDiesel: i am only aware of a substring method
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10:51 ShakDiesel: for ex. (numbah 763423450 9) => 0
10:52 Gertm: I'm sure you can calculate that.
10:52 dingfeng: are there xexpr->CSS libraries?
10:53 Gertm: with remainders
10:53 ShakDiesel: let me think a bit
10:53 ShakDiesel: lol
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10:55 samth: dingfeng: i don't know what you mean by that
10:56 samth: ShakDiesel: is this a homework question?
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10:56 ShakDiesel: indeed im just trying to get insight of some function that could help me
10:58 ShakDiesel: rather operations that im not aware of
10:59 noelw: Shaq, 321 = 3*100 + 2*10 + 1
10:59 noelw: Try using that to go from a number into it's decimal representation
11:00 noelw: s/it's/its
11:00 ShakDiesel: thx let me sit on that for a bit
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11:07 RacketCommitBot: [racket] plt pushed 2 new commits to master: http://git.io/jYID0w
11:07 RacketCommitBot: [racket/master] fix `raco exe' for cycles created via `define-runtime-module-path' - Matthew Flatt
11:07 RacketCommitBot: [racket/master] fix reference to statics meant to be adjusted by `raco exe' - Matthew Flatt
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11:35 samth: mithos28: i added a comment on your gist
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12:13 mithos28: samth: yes, but I don't think that should change the semantics, the environment should already have been enriched after the define-values form was found
12:13 mithos28: I made a change to the program to output if the identifiers were bound
12:13 mithos28: https://gist.github.com/1258195
12:14 mithos28: This says that the identifiers are not bound-identifier=?, yet one still binds the other
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12:46 ShakDiesel: damn so i came up with a function that works for half the entries
12:46 ShakDiesel: lol fail
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13:00 ShakDiesel: any1 here?
13:03 bremner: ShakDiesel: please just ask your questions, rather than asking if people are there. Someone will answer when they can.
13:08 ShakDiesel: sure
13:08 ShakDiesel: actually i just resolved it
13:09 ShakDiesel: however i don't believe my code is efficient
13:09 ShakDiesel: (remainder (remainder (floor (/ candidate (expt 10 (- 9 position)))) 100) 10))
13:09 ShakDiesel: would give u (sin-digit 463290115 6) => 0
13:10 ShakDiesel: (define (sin-digit candidate position)
13:12 ShakDiesel: im just guessing but thats prolly not the best way to solve that question correct?
13:26 bremner: ShakDiesel: what problem are you trying to solve?
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14:21 RacketCommitBot: [racket] plt pushed 3 new commits to master: http://git.io/vsyrKw
14:21 RacketCommitBot: [racket/master] adjust the "Transfer-Encoding: chunked" code to re-use bytes more - Robby Findler
14:21 RacketCommitBot: [racket/master] add support for redirections to get-pure-port and add get-pure-port/headers - Robby Findler
14:21 RacketCommitBot: [racket/master] adjust drracket's "download plt" file functionality to follow redirections - Robby Findler
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15:42 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/vk3i3w
15:42 RacketCommitBot: [racket/master] Add "build.bat", "rbuildmode.c", and "sgc" from the worksp directory to - Eli Barzilay
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15:54 zombo: hey guys
15:54 zombo: i need some help with this code i'm writing, i'm new to scheme
15:55 zombo: anyone here mind giving me a helping hand?
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16:08 samth: just ask
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16:43 Gertm: Sometimes I get arrows in drracket showing me the origin of definitions.. How can I toggle that?
16:45 stamourv: That's check syntax.
16:45 stamourv: There should be a button to run it.
16:46 stamourv: And if you're running a recent nightly build, there should be an option to have check syntax run online.
16:46 stamourv: That will be in the new version, that's due in a couple of weeks, IIRC.
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18:12 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/_1igAA
18:12 RacketCommitBot: [racket/master] fix the expansion of beginner-true and beginner-false so - Robby Findler
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18:24 yoklov: is there a way to require only the bindings for a particular struct from a module other than (matching-identifiers-in #rx".*structname.*" somemodule)?
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18:26 mithos28: yoklov: the not so easy way is to use the struct-info object, which will work even if the names do not follow the standard
18:26 mithos28: but as far as I know you will have to implement it yourself
18:27 stamourv: yoklov: As an approximation, you can define another module that imports `somemodule', then only exports `(struct-out structname)', and then have your original module require that.
18:27 stamourv: Not especially elegant, though.
18:28 yoklov: hm, alright
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23:52 mithos28: what is the easiest way to write a macro that works like an identifier but correctly respects #%app bindings?
23:54 jonrafkind: uh what
23:54 jonrafkind: you want a set!-transformer?
23:55 mithos28: (syntax-case stx () ((id args …) #'(new-id args …))) will give the wrong #%app binding
23:56 jonrafkind: oh you want to use the app from the original syntax
23:56 jonrafkind: i think you have to do (datum->syntax stx (cons #'new-id #'(args ...)) stx) or something like that
23:57 mithos28: ok. It should be easier because most of the time that is the correct thing to do, and the easy way is wrong
23:57 jonrafkind: i agree