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05:08 chemuduguntar: hello
05:11 chemuduguntar: how do I convert a number to a string?
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05:18 noelw: number->string
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06:50 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/DLksjA
06:50 RacketCommitBot: [racket/master] provide provide, so it's possible to use provide and require in - Stephen Bloch
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10:23 ambrosebs: samth: maybe continue our discussion here
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10:23 samth: ambrosebs: or via email
10:23 samth: but sure
10:24 ambrosebs: samth: email is easier to reference later, I'll do that
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10:35 RacketCommitBot: [racket] plt pushed 2 new commits to master: http://git.io/TcgnkA
10:35 RacketCommitBot: [racket/master] Hide internal fields in color% and point%. - Asumu Takikawa
10:35 RacketCommitBot: [racket/master] Add missing method contracts for color% - Asumu Takikawa
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10:39 asumu: Hmm, submodule support for #lang seems wonky right now.
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10:45 stamourv: asumu: You mean the `reader' submodule stuff?
10:54 asumu: stamourv: Yeah.
10:54 asumu: I managed to make a program loop infinitely at module load-time somehow.
10:54 asumu: I might just be doing something stupid though.
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11:03 asumu: http://paste.lisp.org/display/129134
11:04 asumu: Running tuvalu.rkt there causes DrRacket to get stuck.
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11:05 asumu: Also, #lang reader (submod "something.rkt" reader) works, but seems to get the wrong relative requires.
11:05 asumu: i.e., it's relative to the module that declared that #lang. Not sure if that's intended.
11:10 stamourv: Odd.
11:10 asumu: Oh, and I've also caused online syntax check to go in an infinite loop.
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11:11 asumu: If you load "tuvalu.rkt" DrRacket will die.
11:11 asumu: (well, just eat all your memory anyway)
11:11 stamourv: Good to know.
11:11 stamourv: Nothing in there looks especially problematic, though.
11:11 asumu: Yeah, exactly. It's weird.
11:12 stamourv: `strip-context' makes me a bit uneasy, but apart from that...
11:13 asumu: This is an example from the #lang reader docs.
11:14 asumu: (modified to use submodules)
11:14 stamourv: I don't see submodules in your paste.
11:14 asumu: main.rkt has a submodule.
11:15 stamourv: Nevermind, missed it.
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14:51 dyoo: chemuduguntar: number->string.  See: http://docs.racket-lang.org/reference/generic-numbers.html#(def._((quote._~23~25kernel)._number-~3estring))
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15:21 flying_rhino: any idea when will we have classes in typed racket? Timeframe?
15:21 flying_rhino: no pressure here but I would like to know.
15:21 asumu: flying_rhino: Ideally a few months, but that really depends.
15:21 asumu: And it will take longer to support all the features that classes provide.
15:22 flying_rhino: is there some sort of todo list somewhere (like there is on many open source projects) ?
15:22 asumu: Yes, on the github. I'll find the link.
15:22 flying_rhino: thank you
15:23 asumu: https://github.com/plt/racket/wiki/Intro-Projects
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15:23 asumu: Building TR support for classes is a large enough undertaking that it's not listed there.
15:23 stamourv: flying_rhino: Part of that is a TODO for Racket itself, and part of it is external libraries/tools that would be nice to have.
15:24 asumu: There's no real TODO for major features though.
15:25 flying_rhino: I don't really need OOP. What I am really trying to do is implement component based model. OOP can help me with that but I don't really need all features.
15:26 flying_rhino: if you don't know what component based design is, I can explain
15:29 flying_rhino: actually they are officialy called component based entities but who cares. I would like someone to give me pointers.
15:30 flying_rhino: in case someone tried to do something similar
15:30 stamourv: I can't say I have experience with that.
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15:30 stamourv: But, IIRC, ryanc did some work in the area.
15:31 stamourv: I think he had some papers at GPCE (Generic Programming and Component Engineering).
15:31 stamourv: They're on his website: http://www.cs.utah.edu/~ryan/
15:32 samth: flying_rhino: component based entites sounds just like the observer pattern
15:32 samth: from what i can find on the web
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15:32 samth: stamourv: i think what flying_rhino is taking about is pretty different from anything ryan has done
15:32 stamourv: Could be, I just matched keywords.
15:33 flying_rhino: well, component based entities make oberver pattern easy to implement, but they are not the same thing, I think
15:34 samth: stamourv: http://cowboyprogramming.com/2007/01/05/evolve-your-heirachy/
15:34 flying_rhino: samth: yes I read that, but thanks
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15:37 flying_rhino: component based entities take inspiration from relational databases (though they are somewhat different). Basically every game entity consists of bunch of components. So tank consists of health component (consisting of current health, max health and damage), graphic component (mesh and texture or sprite) and physical component (box for physic engine).
15:38 flying_rhino: components can be linked and unlinked dynamically, like if you link camera to rocket entity, you can observe the world from that rocket's perspective. Philosophy is that "everything can become anything", so it is closer to relational modeling than to hierarhical oop modeling.
15:39 stamourv: AFAIK, Racket doesn't do that out of the box.
15:39 stamourv: _But_, one of the really great things about Racket is how malleable it is.
15:40 flying_rhino: it is pretty popular in game development circles (since most games are too complex for simple OOP) especially for MMORPGs. I am not building MMORPG but would like to implement such system.
15:40 stamourv: Racket really is whatever you want to it be.
15:40 samth: flying_rhino: i would say that you don't need to use classes to implement componets
15:40 flying_rhino: stamourv: well I plan to implememnt the thing, so I am asking before I dive :)
15:40 stamourv: So with a bit of hacking (and possibly macros), you can build your own library/DSL for component design.
15:40 stamourv: flying_rhino: Cool!
15:41 asumu: Reusable components sounds like mixins to me.
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15:41 stamourv: When you do, please make it available!
15:41 stamourv: PLaneT is great for that, and Github works too.
15:41 asumu: Yeah that would be neat to have.
15:41 flying_rhino: stamourv: that's pretty much the plan, but I think it owuld be easier with classes. I am not afraid of macros, but I am used to classes for most stuff.
15:42 flying_rhino: Not that I won't use macros, too
15:43 stamourv: Macros on top of the class system sound like a good plan.
15:43 flying_rhino: asumu: I never used mixins, but I think they are like interfaces, right?
15:43 stamourv: Mixins too, as asumu said.
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15:48 dyoo: flying_rhino: is there any association between this and interactive fiction, out of curiosity?
15:48 flying_rhino: yeah I am trying to build a goddamn game (don't hold your breath for it, it is about 0.1% complete)
15:50 asumu: flying_rhino: mixins are basically bundles of methods/fields that you can "mix in" to classes on the fly.
15:50 dyoo: ah...  that's what I was thinking subconsciously.  I wanted to start looking at Inform, and the phrases you were using echoes their documentation a bit
15:50 asumu: Hence the analogy to components.
15:51 asumu: Each component might be a mixin that you mix in to your base player or rock class.
15:51 asumu: That said, I don't know anything about component-based programming in the game design world so the analogy may fall apart at some point.
15:54 flying_rhino: asumu: yeah but components can be linked and unlinked from entity. Entity is not like a class. Entity usually just consists of ID. For example, you can unlink camera component form tank entity and link it to projectile entity (if player wants to see the world from rocket's perspective), simply by swaping ID it is linked to
15:55 flying_rhino: it is better to think of it as relational database, but without the database.
15:56 flying_rhino: basically components can be class instances, but entity, even if it is some kind of class, only has ID. All functionality comes from components
15:56 flying_rhino: Well ID or some other kind of thing you use to point/ refer to it.
15:58 flying_rhino: *even if it is some kind of class instance
16:01 flying_rhino: now all I have to do is figure out the best way to implement this thing
16:05 flying_rhino: and yeah I'll make it avilable when/if this sees the light of day.
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16:49 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/EqBz0w
16:49 RacketCommitBot: [racket/master] Adding new options re Galler - Jay McCarthy
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17:14 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/X4lH-g
17:14 RacketCommitBot: [racket/master] added a skeleton 2htdp/image guide section - Robby Findler
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18:42 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/rGAq8w
18:42 RacketCommitBot: [racket/master] fix resolution of relative module path in a submodule - Matthew Flatt
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19:01 jonrafkind: jamessan, some guy is asking about supybot, he thinks the project is dead
19:01 jonrafkind: in #sourceforge
19:03 jamessan: not dead yet, just lower on my list than some other projects, so it doesn't get as much love as it could. gribble and Limnoria are two more active versions, from which I try to incorporate useful changes
19:04 jonrafkind: ah yes, #sourceforge has an instance of gribble
19:06 jamessan: I'm hoping to be able to catch up on some of my OSS projects soon.  finishing off a compilers course right now, which has been rather time consuming
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20:21 chemuduguntar: hello
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20:22 chemuduguntar: is (tcp-connect "myhost" port) sufficient to open a tcp connection?
20:22 chemuduguntar: i have netcat listening on that port with the 'netcat -l -p <port>'
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20:23 chemuduguntar: i can telnet to it, and it works, but I can't seem to get racket to be able to do it
20:23 offby1: I'd think that'd suffice.
20:25 offby1: seems to work for me
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20:35 chemuduguntar: http://pastebin.com/6MAcQf4e is that enough?
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21:03 asumu: chemuduguntar: that URL errors for me
21:05 chemuduguntar: oops i set it to expire
21:06 chemuduguntar: (define in '())
21:06 chemuduguntar: (define out '())
21:06 chemuduguntar: (set!-values (in out) (tcp-connect "localhost" 7000))
21:06 chemuduguntar: (print "hello world" out)
21:06 chemuduguntar: that's what i had :)
21:06 asumu: Ah, okay. First, stylistic thing: you're better off (define-values (in out) ...) instead of set!
21:07 asumu: Always avoid set! if possible. :)
21:07 asumu: Second, that looks like it'd work. What happened when you ran it?
21:08 asumu: Try (flush-output out)
21:09 chemuduguntar: ok
21:09 asumu: As the docs say, the port is block-buffered so you won't necessarily immediately see the result.
21:10 chemuduguntar: asumu: ah, excellent
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21:12 chemuduguntar: ok
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21:48 offby1: I might even close the output port
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23:13 ambrosebs: is a Scope in Typed Racket a binding position for type variables?
23:14 ambrosebs: I'm trying to understand the implementation
23:15 offby1: dunno :-|
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23:28 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/eDmAww
23:28 RacketCommitBot: [racket/master] preserve submoduleness in module path index for expanded submodules - Matthew Flatt
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