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00:03 want: helo
00:03 want: any one there?
00:04 want: I want to pass files to my racket file in linux command line
00:04 want: ?
00:04 want: line
00:04 want: >
00:05 didi: want: What?
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00:33 dyoo: here
00:33 dyoo: want: sorry, was busy doing a bit.  Were you the one who wrote on the mailing list?
00:33 mithos28: I think they left
00:34 dyoo: doh
00:42 mithos28: eli: I have solved my issue with the docs page. I installed custom css to make it disapear
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02:56 eli: mithos28: Make what disappear?
02:56 mithos28: eli: the custom search box
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02:56 eli: That's a rather brute force way of solving it...
02:57 mithos28: Well brute force would be using a http proxy to rewrite the html stream
02:57 mithos28: css after the fact is minor compared to that
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02:58 eli: Yes, of course.  The bruteness is in just making it go away rather than tweak things more politely.
02:58 mithos28: I tweaked its visibility
02:59 eli: Yes, I got that.
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03:01 asvil: Hi all. It seems that racket3m generated sources in worksp/gc2/xsrc are not updated during build.bat?
03:06 mithos28: asvil: Sorry I don't know anything about how the windows build works.
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05:30 Cryovat: I think this is probably the right place to ask
05:30 Cryovat: I want to read an introduction to compilers
05:30 Cryovat: What's a good book? The dragon one?
05:33 igstan: I'm not an expert in this field, but I really liked this open course http://cs.brown.edu/courses/csci1730/2012/
05:34 igstan: there's online book + videos
05:35 Cryovat: That looks excellent
05:35 Cryovat: Thanks :)
05:35 igstan: you're welcome. I hope you'll enjoy it as much as I did.
05:42 hkBst: Cryovat: there is also Lisp in Small Pieces
05:46 Cryovat: There doesn't seem to be a Kindle version of any of the compiler books :(
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08:33 nyuszika7h: dy
08:33 nyuszika7h: oops
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09:59 stamourv: Cryovat: Re compilers textbooks: Sadly, I don't know of any great ones.
09:59 stamourv: I would recommend staying away from the dragon book, it's outdated.
10:00 stamourv: Some people like the Tiger book (Appel's Modern Compiler Implementation in $LANG). It's a bit better, but IMO it has some pretty serious flaws too.
10:00 stamourv: I've heard good things about Cooper and Torczon's Engineering a Compiler, but haven't checked it out yet. (I really should.)
10:01 Cryovat: Wow, the Kindle edition of the last one there is 72$
10:01 stamourv: I've had a look at Amal Ahmed's lecture notes (she's teaching compilers at NEU this semester), and I liked what I saw.
10:02 stamourv: It's based on Greg Morrissett's course at Harvard.
10:02 stamourv: Lecture notes and assignments are online: http://www.ccs.neu.edu/home/amal/course/4410-s13/
10:02 stamourv: Dunno if the lecture notes are enough on their own, though.
10:03 stamourv would really like to write his own compilers textbook, one day.
10:03 Cryovat: Thank you, I'll have a look at these :)
10:03 Cryovat: I can apparently rent Engineering for a month for 10$
10:03 stamourv .oO(Post-Modern Compiler Implementation in Racket?)
10:04 Cryovat: Seems like a better option than paying 70$ to figure out if it's wortwhile
10:04 stamourv: Meh. I got mixed feelings about that idea.
10:04 stamourv: On the one hand, you're right. On the other, you may be at it for 7+ months, especially if you're doing it part-time.
10:05 Cryovat: Need to catch a bus, sorry
10:05 stamourv: And keeping the book around can be handy if you want to refresh your memory later.
10:05 Cryovat: I'll be back a bit later
10:05 stamourv: I'll probably still be here. ;)
10:05 stamourv just started his day.
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11:55 didi: samth: What if rackunit could install a new `exit-handler'?
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12:02 didi: Hum, I think I misunderstood what `exit-handler' does.
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14:45 dented42: Is there a reason why syntax-case doesn't allow boxes or hash tables in templates, thereby not making it useful for deconstructing those kinds of syntax objects?
14:46 dyoo: it doesn't?  Checking...
14:47 dented42: rudybot: (syntax-case #'(a #(b c) #&1) () [(a b #&c) #'c])
14:47 rudybot: dented42: your sandbox is ready
14:47 rudybot: dented42: error: #<undefined>:1:15: a: bad syntax <NEWLINE>   in: (a #(b c) #&1)
14:47 dented42: dyoo: unless I'm doing something wrong.
14:47 dyoo: checking...
14:48 dyoo: so vectors seem to do ok.  Putting up a gist.
14:48 dyoo: dented42: https://gist.github.com/dyoo/5207339
14:48 dyoo: I haven't tried hash tables or templates yet.  Testing that next.
14:49 dented42: yes, vectors and prefab structs work.
14:50 dented42: they aren't allowed according to the pattern grammar in the documentation
14:50 dented42: http://docs.racket-lang.org/reference/stx-patterns.html
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14:55 dyoo: dented42: good question; I don't know the answer.  I can conjecture that since syntax-case is something shared with the other Schemes, it was developed without the extensions that Racket provides (boxes, hash literals).  But I'm talking in ignorance: I don't know.
14:56 dyoo: dented42: e.g. http://www.cs.indiana.edu/chezscheme/syntax-case/old-psyntax.html
14:57 dented42: that seems like a good explanation.
14:57 dyoo: But I suspect that syntax-parse would be free to break away and support additional patterns like hash literals.  I haven't tried it yet though, and I currently can't try it out due to lack of time.
14:58 dyoo: Also, it would be good to ask the list.  Maybe it was just a simple oversight.  :)
14:59 dented42: ok
14:59 dented42: I shall
14:59 dented42: thanks ^_^
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15:40 soegaard: Apropos boxes and syntax:  http://lists.racket-lang.org/users/archive/2009-November/036876.html
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16:12 aidy: are there people who use hashmaps instead of structs in Racket? (As in more of a Clojure programming style)
16:12 aidy: I've been wondering what the benefits or drawbacks are to doing this
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16:31 ozzloy: (build-path "a/b/c" "..")
16:32 ozzloy: rudybot, (build-path "a/b/c" "..")
16:32 rudybot: ozzloy: your sandbox is ready
16:32 rudybot: ozzloy: ; Value: #<path:a/b/c/..>
16:32 ozzloy: rudybot, (simplify-path (build-path "a/b/c" ".."))
16:32 rudybot: ozzloy: ; Value: #<path:/mnt/rudybot/a/b/>
16:33 stamourv: rudybot: We know where you live!
16:33 rudybot: stamourv: is in fact going to an MST3K live action tonight.
16:33 didi: rudybot: (build-path "a/b/c" 'up)
16:33 rudybot: didi: your sandbox is ready
16:33 rudybot: didi: ; Value: #<path:a/b/c/..>
16:33 ozzloy: is there a way to take "a/b/c" and ".." and get "a/b" by itself?
16:33 stamourv: ozzloy: Maybe `split-path' would work.
16:34 stamourv: rudybot: (split-path (build-path "a/b/c/"))
16:34 rudybot: stamourv: your sandbox is ready
16:34 rudybot: stamourv: ; Value: #<path:a/b/>
16:34 rudybot: stamourv: ; Value#2: #<path:c>
16:34 rudybot: stamourv: ; Value#3: #t
16:35 ozzloy: ok, what if i have "a/b/c" and "../.."
16:35 ozzloy: what i really want is to simplify a relative path
16:36 stamourv: rudybot: (simplify-path (build-path "a/b/c" "..") #f)
16:36 rudybot: stamourv: ; Value: #<path:a/b/>
16:36 stamourv: ozzloy: ^
16:36 ozzloy: ohho!
16:37 stamourv: The docs are not super clear about what that flag does, though.
16:37 stamourv: Wanna write a documentation patch?
16:37 stamourv: It's easy. :)
16:38 ozzloy: i have done it before
16:38 ozzloy: i might do it for this
16:38 stamourv: :D
16:38 stamourv: Simplifying a relative path is a reasonable use case, and the docs don't really explain that the flag also does that.
16:39 ozzloy: based on the name, i thought it just checked whether the resulting path is valid on the current filesystem
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17:02 ozzloy: rudybot, (make-directory "../surely-you-check-for-this")
17:02 rudybot: ozzloy: your sandbox is ready
17:02 rudybot: ozzloy: error: make-directory: `write' access denied for ../surely-you-check-for-this
17:02 ozzloy: really?
17:03 stamourv: What?
17:03 stamourv: The sandbox caught it, as it should.
17:03 ozzloy: i would think rudybot would check for that
17:03 ozzloy: no, looks like the filesystem permissions caught it
17:04 stamourv: rudybot: (make-directory "/tmp/foo")
17:04 rudybot: stamourv: error: make-directory: `write' access denied for /tmp/foo
17:04 stamourv: Try it at home, I'm pretty sure it's the sandbox.
17:04 ozzloy: oh
17:05 ozzloy: yeah, i just tried it and "system error" instead
17:06 m4burns: rudybot: (call-with-limits 1 1 (thunk (printf "asdf")))
17:06 rudybot: m4burns: your sandbox is ready
17:06 rudybot: m4burns: error: call-with-limits: undefined; <NEWLINE>  cannot reference an identifier before its definition <NEWLINE>   in module: 'program
17:06 m4burns: rudybot: (require racket/sandbox)
17:06 rudybot: m4burns: Done.
17:06 m4burns: rudybot: (call-with-limits 1 1 (thunk (printf "asdf")))
17:06 rudybot: m4burns: ; stdout: "asdf"
17:06 m4burns: hmm
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17:09 cnonim: hi all
17:10 stamourv: m4burns: Yo dawg, I heard you like sandboxes, so I put a sandbox in your sandbox so you can eval while error: with-limit: out of time.
17:10 cnonim: example: https://gist.github.com/cNoNim/c9dc60749d7c8de70684
17:10 m4burns: stamourv: haha
17:10 cnonim: i have hash map where some values mapped to set of dependicies
17:11 cnonim: how i can build dependencies tree from this hash?
17:12 cnonim: where root is values without dependencies
17:12 stamourv: cnonim: Start by writing a data definition for trees.
17:17 cnonim: I'm actually not sure that I really need it), my main goal is to find a recursive dependence
17:17 (quit) cored: Ping timeout: 256 seconds
17:18 cnonim: another example: )
17:18 cnonim: rudybot: (letrec ([X Y] [Y X]) Y)
17:18 rudybot: cnonim: your sandbox is ready
17:18 rudybot: cnonim: ; Value: #<undefined>
17:18 stamourv: Well, in that case, you can just access the hash, the access it again for everything you find, and so on.
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17:19 cnonim: letrec works only if we have runtime dependence
17:19 cnonim: like
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17:19 cnonim: rudybot: (letrec ([X (lambda () Y)] [Y X]) Y)
17:19 rudybot: cnonim: ; Value: #<procedure:X>
17:19 cnonim: but not work if
17:19 cnonim: rudybot: (letrec ([X Y] [Y X]) Y)
17:19 rudybot: cnonim: ; Value: #<undefined>
17:20 stamourv: Correct.
17:20 m4burns: rudybot: (define d (parameterize [(sandbox-path-permissions `((read ,(byte-regexp #"/.*"))))] (make-evaluator 'racket)))
17:20 rudybot: m4burns: error: links: cannot find installation collections path
17:20 cnonim: my hash it's representation of dependencies for letrec
17:21 m4burns: mmm.
17:21 stamourv: cnonim: Right. And what information do you want?
17:22 cnonim: example (hash 'X (set 'Y) 'Y (set 'X))
17:23 cnonim: how i can choose dependence which should be in runtime
17:23 cnonim: ?
17:24 stamourv: I don't understand your question.
17:30 cnonim: rudybot: (letrec ([X (Y)] [Y (X)]) Y)
17:30 rudybot: cnonim: error: application: not a procedure; <NEWLINE>  expected a procedure that can be applied to arguments <NEWLINE>   given: #<undefined> <NEWLINE>   arguments...: [none]
17:31 cnonim: rudybot: (letrec ([X ((lambda () Y))] [Y (X)]) Y)
17:31 rudybot: cnonim: error: application: not a procedure; <NEWLINE>  expected a procedure that can be applied to arguments <NEWLINE>   given: #<undefined> <NEWLINE>   arguments...: [none]
17:32 stamourv: cnonim: Are you trying to automatically generate letrec expressions?
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17:32 cnonim: yes
17:32 stamourv: Ah, ok.
17:33 stamourv: I recommend you check out Kent Dybvig's paper Fixing Letrec. I think it may be relevant.
17:34 cnonim: thx
17:34 cnonim left to read
17:36 rich1: just a thanks and well done on the installer for windows + *nix and build instructions - pain free and well documented/explained during the process
17:37 stamourv: :D
17:37 stamourv: Glad to hear everything went well!
17:37 stamourv: The Racket team takes documentation and usability seriously, so it's nice to see that it's working.
17:38 (quit) ncw: Remote host closed the connection
17:38 rich1: it's certainly appreciated this end.
17:39 rich1: just need a new simple project - i only get a bit of time to learn racket
17:39 stamourv: Did you check out the intro projects page on the wiki?
17:40 rich1: didn't know there was one. i check the guide and ref. docs though.
17:40 (quit) dzhus: Read error: Operation timed out
17:40 stamourv: Looking up the link.
17:40 stamourv: https://github.com/plt/racket/wiki/Intro-Projects
17:40 rich1: checking
17:41 stamourv: Feel free to claim any of them! :)
17:41 rich1: (in dreamland) i know i wanted to play with SequenceAlignment (Mathematica function) - but i'm not clever enough to implement and couldn't find an existing implementation to play with
17:42 rich1: ah the IRC log highlighter! that is actually something i've wanted myself as the plain text one is quite hard for me to read
17:44 rich1: as a design - couldn't it be (highlight-irc text-log) => html-log
17:44 stamourv: I believe jschuster is working on an IRC library. That may come in handy.
17:46 jschuster: rich1: I am indeed working on a client library. See https://pkg.racket-lang.org/info/irc for a very early version
17:46 stamourv: https://github.com/schuster/racket-irc
17:46 stamourv: jschuster: You're surprisingly hard to find on github.
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17:46 stamourv: There are like 3 people with your name.
17:46 jschuster: yeah, jschuster was already taken, so I had to take schuster instead
17:47 jschuster: one of them is probably the guy who registered jonathanschuster.com ahead of me
17:47 jschuster: rich1: if you end up looking into my IRC library, please let me know of anything you think it needs. It still needs to grow quite a bit
17:47 rich1: would that irc library enable writing a bot - since CIA went down i've missed that bot
17:48 stamourv should probably register a domain with his name in it, just in case.
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17:48 jschuster: definitely. my next todo is to port rudybot to use my library
17:48 jschuster: you could do it right now, but you'd have to know the internals of the IRC protocol
17:48 rich1: jschuster: cool.
17:48 jschuster: I plan on wrapping many more of IRC's commands so you don't have to know the protocol itself
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17:50 rich1: from my point of view (not knowing the internals or IRC) - the only things i'd be interested in at a high level is a new incoming message, and ability to send a message - given a channel of course
17:50 stamourv: rudybot: source
17:50 rudybot: stamourv: git clone git://github.com/offby1/rudybot.git
17:50 stamourv: rich1: ^
17:51 stamourv: Not the cleanest codebase, though (sorry offby1).
17:52 jschuster: cool. most of that is there: the only thing missing is that received messages come in as something like (irc-response "PRIVMSG" '(channel-name some-message))
17:52 jschuster: so you'd have to check for the PRIVMSG command and grab the correct fields out of the struct - shouldn't be too hard
17:54 jschuster: I plan on parsing responses from the server so that we can easily distinguish different types of messages from each other in the future
17:54 jschuster: so, that should be easier sometime soon
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17:55 rich1: nice.
17:56 rich1: to sidetrack a moment - "Find things that use lists for sets, replace them with racket/set"
17:57 dented42: this is perhaps a naive question: Units seem really really cool, why aren't they used everywhere?
17:57 rich1: i've just grepped for (member - and only a few results are returned - so is that done or allmost  done?
17:57 cnonim: rudybot: (let () (define X Y) (define Y X) Y)
17:57 rudybot: cnonim: ; Value: #<undefined>
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18:04 cnonim: stamourv: thx for paper again :)
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18:08 stamourv: cnonim: No problem!
18:08 stamourv: He had a followup at the 2009 Scheme Workshop: Fixing Letrec Reloaded, or something.
18:19 carleastlund: dented42: Units are cool for a lot of purposes, but they add a lot of syntactic noise where they aren't needed.  There are a lot of purposes for which classes, modules, and macros are better suited, so we use those instead.  We mostly use units where we need dynamic linking or mutual recursion.
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23:52 RacketCommitBot: [racket] plt pushed 4 new commits to master: http://git.io/7lmxnA
23:52 RacketCommitBot: racket/master 2792cd7 Robby Findler: remove redundant check and minor cleanup
23:52 RacketCommitBot: racket/master a29f37f Robby Findler: added scribble-exn->string
23:52 RacketCommitBot: racket/master e5d91ba Robby Findler: add interaction/no-prompt and clarify that interaction-eval...
23:52 (part) RacketCommitBot
23:53 Kaylin: http://pastebin.com/ztu29u0y I have two questions here, pardon the we think this is a homework assignment, it's not. pardon the awful code, I am sorry. this is a wireshark log with some racket code appended to it.
23:53 Kaylin: I have two things confusing me, firstly I am just kind of trying to figure out regex today so I am not sure where I am wrong but something isn't getting thrown out/parsed so I never reply to a second PING, also I get two odd numbers printed to the DrRacket console before I even can reply to the server, what does this mean?
23:54 offby1: gosh, I dunno
23:54 Kaylin: (this is me playing with my friend's IRC server
23:54 Kaylin: )
23:54 offby1: lemme look at your paste
23:55 offby1: Kaylin: that's too much for me to absorb in my not-quite-drunk-enough state.  Can you reduce it to a single, reasonably-simple regex; and a simple input string; and tell me how the match differs from what you expect?
23:55 Kaylin: simple? probably not, I presume that (sec lemme grab it)
23:57 Kaylin: #rx"^[^[PING|:NickServ.*?/msg NickServ identify <password>]]" isn't quite the opposite of the two other cases
23:57 Kaylin: #rx"^:NickServ.*?/msg NickServ identify <password>.*?\r\n"
23:57 Kaylin: #rx"^PING.*?\r\n"
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23:59 Kaylin: for example #rx"^[^[PING|:NickServ.*?/msg NickServ identify <password>]].*?\r\n" doesn't do it for me either, when I just match everything it does work but ofc I am likely to miss pings and d/c