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07:16 Somelauw: How to type \lambda in any other program than drracket?
07:19 bremner: (lambda () )
07:20 bremner: or, I guess use utf8 compose facilities.
07:20 bremner: necer tried that
07:20 Somelauw: I want to type the unicode symbol?
07:22 bremner: or just use the word lamda
07:22 bremner: lambda
07:22 bremner: (define f (λ (x) (+ x 1)))
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08:00 Somelauw: I think lambda is too verbose to type and someone told me that you can also use the unicode symbol.
08:00 Somelauw: And I thought why not?
08:00 bremner: well, it isn't portable
08:01 Somelauw: Can I at least make lambda display as l*?
08:01 bremner: I expect you can do whatever you want, with enough effort.
08:02 bremner: but what does display mean in this context?
08:03 Somelauw: That my editor, pager and everything abbreviates lambda to l* so I can read it faster.
08:03 Somelauw: I just think lambdas look so verbose.
08:04 Somelauw: And I am thinking of ways to reduce its verbosity.
08:04 Somelauw: But probably there is no practical way to make it less verbose.
08:04 bremner: well, you can obviously use the unicode lambda, but only in racket afaik
08:05 Somelauw: Well scheme isn't very portable anyway, I think.
08:05 bremner: I would say if you are that worried about the details of syntax, s-expression based languages may not be for you.
08:08 Somelauw: When is the unicode-lambda not portable?
08:08 Somelauw: Does it work on all systems that have racket installed?
08:08 bremner: yes
08:09 bremner: portable usually refers to different implementations of the same language
08:15 Somelauw: Since scheme dialects are almost completely different languages, I don't really think that portability matters that much, do you?
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08:20 bremner: I am not talking about dialects, I am talking about implementations. Each implementation typically supports several dialects
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12:49 leo2007: I have cairo installed to /usr/local/unix/cairo2
12:49 leo2007: how to make racket aware of that?
12:51 jonrafkind: LD_LIBRARY_PATH
12:51 jonrafkind: ipv6 huh?
12:53 leo2007: ahh, I didn't notice I was using ipv6 but then I live in the best Uni in China so no wonder ;)
12:54 jonrafkind: cool. you know what im saying abotu LD_LIBRARY_PATH?
12:55 leo2007: jonrafkind: yeah, but I want to find a way that doesn't require setting that.
12:55 jonrafkind: edit /etc/ld.so.conf
12:55 jonrafkind: then run ld-config
12:56 leo2007: jonrafkind: on OSX here, I compiled racket the unix style
12:56 jonrafkind: oh, i forget what nonsense OSX uses to deal with dynamic library paths
12:56 jonrafkind: although I do know you have to set DYLD_LIBRARY_PATH isntead of LD_LIBRARY_PATH
12:56 jonrafkind: usually I just put that in my .bashrc
12:57 jonrafkind: hm, maybe you can pass a flag to configure to specify the location of cairo?
12:57 jonrafkind: doesn't look like it..
12:57 leo2007: jonrafkind: cairo2 is in the PKG_CONFIG_PATH but racket doesn't pick it up while compiling
12:58 jonrafkind: oh you are just trying to compile with it
12:58 leo2007: done compiling.
12:58 leo2007: just found cannot load some modules.
12:59 jonrafkind: im not sure what to do, you can ask on the mailing list
12:59 jonrafkind: most of the main devs use osx
13:00 leo2007: or maybe I should leave it until I am familiar with racket/scheme.
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14:40 PLT_Notify: racket: master Robby Findler * 77c2543 (0 files in 0 dirs): added an example with a type checker
14:40 PLT_Notify: racket: master Robby Findler * 362f739 (1 files in 1 dirs): fixed add-parent bug
14:40 PLT_Notify: racket: master Robby Findler * 5522c72 (1 files in 1 dirs): Rackety
14:40 PLT_Notify: racket: master commits a4644d4...5522c72 - http://bit.ly/hPXovg
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17:52 PLT_Notify: racket: master Matthew Flatt * 1641d07 (2 files in 2 dirs): cocoa: upgrade cairo binary to v1.10.2 ... - http://bit.ly/hUvDCR
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18:02 PLT_Notify: racket: master Kevin Tew * 0c4d90b (2 files in 2 dirs): codeblock line numbers - http://bit.ly/fDWWaC
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18:18 andreas_p: hi all
18:19 andreas_p: what about a shell like "tryruby.org" or "tryhaskell.org"...
18:19 andreas_p: ;-) ?
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19:52 PLT_Notify: racket: master Matthew Flatt * 4c5c46d (2 files in 1 dirs): avoid Cairo and Pango functions missing in CentOS 5.5 libs - http://bit.ly/e6Clsa
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20:03 Somelauw: Okay, I feel a bit limited by the builtin functions, because I can t figure out how to solve this problem.
20:03 Somelauw: I have a set of elements and I want to remove a random element from it.
20:04 Somelauw: I can get the length of a set and I can remove an element from a set.
20:04 Somelauw: But I can t return a random element from that set.
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