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03:44 Blkt: good morning everyone
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09:28 lisp_panda: my eyesight sucks. How to enlarge fonts in dr racket?
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10:09 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/bMerzQ
10:09 RacketCommitBot: [racket/master] fixed typo, closes PR 12539 - Matthias Felleisen
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12:14 offby1: lisp_panda: at the command line, type "emacs", then ... :-)
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12:21 lisp_panda: then what?
12:23 offby1: then M-x package-install RET geiser RET
12:23 offby1: then M-x run-geiser RET racket RET
12:23 offby1: you do realize I'm joking
12:24 lisp_panda: so there is no way, then
12:24 lisp_panda: very funny
12:25 lisp_panda: I guess you'll borrow me your eyes, then
12:25 offby1: I _assume_ there's a way; DrRacket has the usual configuration menus somewhere.
12:26 offby1: but maybe the fonts on them are too small to read :)
12:26 offby1: On my Mac, when I hit command-, the first thing that comes up is a font-settings dialog.
12:26 lisp_panda: found it alright
12:27 lisp_panda: it haven't seen that before for some reason
12:27 lisp_panda: *I
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12:34 lisp_panda: does drRacket have tabs (for multiple files) ?
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13:02 offby1: don't think so
13:03 offby1: not sure actually.
13:03 offby1: Try It And See™.
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13:24 lisp_panda: is there a way to propese stuff for next version?
13:24 lisp_panda: *propose
13:24 lisp_panda: coz every editor in the universe has tabs
13:26 offby1: just send an email to the dev list
13:26 offby1: it'd be good to first confirm that it does, indeed, lack tabs :)
13:27 offby1: uh, the second entry under my "File" menu is "New Tab".
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13:27 jonrafkind: maybe drracket should have a button where the next tab would show up that says 'make new tab' or something
13:28 lisp_panda: I'll have to change nickname after today
13:28 lisp_panda: I keep embarassing myself
13:28 lisp_panda: not enough sleep, I guess
13:29 offby1: jonrafkind: my drracket should be rewritten in javascript and XUL, so that it can run as a Firefox extension
13:29 offby1 whistles innocently
13:31 lisp_panda: does anyone here use racket commercially?
13:32 jonrafkind: offby1, you can run drracket as a netscape navigator plugin
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13:40 offby1: jonrafkind: I assume you're joking.  I certainly was.
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13:41 jonrafkind: yea im joking :p
13:41 jonrafkind: try it as a lynx plugin!
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13:43 lisp_panda: dammit it should run on commodore 64
13:45 lisp_panda: and, naturally on spectrum
13:46 lisp_panda: can I write to them?
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13:55 offby1: sure
13:55 offby1: well, actually; I dunno.  Are you literate?  Are your hands working OK?  Have you got a pen?
14:04 asumu: lisp_panda: a developer from NaughtyDog shows up here now and then.
14:05 asumu: (they use Racket to build a scripting engine for their games)
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16:12 chandler: lisp_panda: We use Racket commercially. It's an excellent tool, and has by far the best set of included batteries I've seen outside of Java (eyuch) for multi-platform applications.
16:19 bremner: chandler: have you played with clojure?
16:20 chandler: A little bit. In some ways it seemed like an attempt to take all of Common Lisp's warts and make them bigger.
16:21 chandler: I'm not particularly fond of Swing either.
16:22 bremner doesn't know anyone who likes swing
16:22 chandler: Racket's ability to distribute stand-alone applications is also very helpful for us.
16:24 chandler: Honestly, I don't think there's anything we're doing that Clojure would do better, and quite a number of areas where it would be worse.
16:28 chandler: Let me put a plug for contracts in here as well. My colleague came from a Common Lisp background, and contracts are one of the big features that he appreciates using in Racket. At a previous employer, "NIL is not of type REAL" was a running joke because of the utter uselessness of getting such a type error deep in the guts of the implementation of a complex system. Contracts are exactly the right way to prevent that.
16:29 rsimoes: what kind of shop are you at?
16:29 bremner: well, I'm peripherally involved with a JVM project at a Uni
16:31 chandler: rsimoes: We do what could broadly be described as networking hardware. We use Racket internally as superglue, essentially.
16:32 rsimoes: stuff between the glue is C?
16:33 chandler: In some cases, yes. In other cases the Racket code is talking to hardware over a network.
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17:31 lisp_panda: okay then maybe you can tell m how best to make Racket and C++ talk
17:33 lisp_panda: are automated tools like Swig any good? (heard some horror stories but I never actually used that stuff)
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17:34 lisp_panda: chandler: what are the best practices for Racket/C++ interface
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18:25 RacketCommitBot: [racket] plt pushed 3 new commits to master: http://git.io/-mppkw
18:25 RacketCommitBot: [racket/master] adjust covered-cases so that it always returns deterministically - Robby Findler
18:25 RacketCommitBot: [racket/master] added a amb-based redex tutorial - Robby Findler
18:25 RacketCommitBot: [racket/master] lift some work out so it happens earlier (and less often) in - Robby Findler
18:43 shaatar: Is there a nice method for converting between bases (ie octal and hex) in racket?
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19:07 angusiguess: There's a sort of greasy way to do it.
19:08 angusiguess: (string->number (string-append "#o" (number->string a))) should give the octal representation of a.
19:52 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/s_ZSsg
19:52 RacketCommitBot: [racket/master] up the timeout for tut.scrbl - Robby Findler
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20:33 RacketNoob: Is there a 'with' function in Racket?
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20:45 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/x0mfWw
20:45 RacketCommitBot: [racket/master] clarify 'add teachpack' menu item - Robby Findler
20:46 bremner: RacketNoob: is that like let ?
20:50 RacketNoob: No I think I figured out what I need to do
20:50 RacketNoob: My prof keeps referencing with in his examples
20:50 RacketNoob: but I think its a function he defined but never showed us
20:51 bremner: ah, probably in a PLAI based course?
20:51 RacketNoob: Ya
20:52 bremner: it doesn't exist in racket, but only the languages like WAE
20:52 RacketNoob: Hah, thats what we are doing I guess
20:52 RacketNoob: He uses WAE as a defined-type in his examples
20:56 bremner: well, yes, than then he has a function defined that knows what to do with With
20:58 RacketNoob: This is the sort of syntax he is using: (with (x (+ 5 5)) (+ x x)))
20:58 RacketNoob: which would return 10
20:59 RacketNoob: I know I need to parse the (+ x x) and replace the x's with the evaluation of (+ 5 5)
20:59 RacketNoob: Any good ways to do this?
20:59 RacketNoob: err returns 20
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21:07 bremner: It sounds like you need to get some help from your prof or TA; this is really the material from the course I guess.
21:11 RacketNoob: Probably
21:11 RacketNoob: Thanks anyways
21:12 chandler: lisp_panda: I don't really use C++; any time in the past I've been faced with some instance of the "C++ to <foo>" problem I've either written a C wrapper library for the C++ or exposed the <foo> part via a C interface.
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21:19 neilv: (provide (contract-out ...)) is preferred to (provide/contract ...) now?
21:20 neilv: almost no code is using "contract-out" yet
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21:40 RacketNoob: Newbie question: could someone tell me why this doesn't work? http://pastebin.com/r4GzgD9e
21:41 neilv: why are there parentheses around the string values?
21:42 RacketNoob: Sorry is that not Racket syntax
21:42 RacketNoob: I thought you put the condition in the first parenthesis and and conditional code in the second.
21:43 neilv: what does the documentation say about the syntax of "cond"?
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21:44 RacketNoob: Sorry I was just going off my professors slides where he puts parenthesis around all conditional execution.
21:51 neilv: professors are tricky like that
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