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00:19 close-paren: asumu: still here?
00:21 close-paren: someone beat me to it. check out this "generalized" set! macro. http://okmij.org/ftp/Scheme/map-set.txt
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00:52 nkkarthik: hi, my setup is debian/emacs/quack/racket-5.2.1
00:53 nkkarthik: in the racket repl... how can i use define-datatype from 'eopl'
00:53 nkkarthik: I tried (require 'eopl) but it says 'no module named eopl'
00:54 nkkarthik: I see that eopl is installed at /usr/share/racket/collects/eopl
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01:59 nkkarthik: if I run this in repl... (module eop-let eopl
01:59 nkkarthik: (define a 10))... how can I access 'a'?
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02:03 nkkarthik feels like Will Smith in "I am legend"
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02:16 mithos28: nkkarthik: Did you solve your issues?
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02:40 nkkarthik: mithos28: hey, no I didn't
02:40 mithos28: what are you stuck on currently?
02:40 nkkarthik: I am trying to run a program from EOPL
02:41 nkkarthik: I am using emacs/quack
02:41 nkkarthik: my problem is how to require 'eopl module in the repl
02:41 mithos28: it should be eopl not 'eopl
02:41 nkkarthik: to get the 'define-datatype'
02:42 nkkarthik: so I do (require 'eopl) in the repl?
02:42 mithos28: no
02:42 mithos28: (require eopl)
02:42 mithos28: no '
02:42 nkkarthik: oh
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02:44 nkkarthik: hey that seems to work!!... thank you so much mithos28
02:44 mithos28: no problem
02:44 nkkarthik: why do we need #lang eopl then?
02:45 mithos28: its just like #lang racket,
02:45 nkkarthik: I mean when I have to write it in a file can I just use (require eopl)... or do I have to use #lang eopl?
02:45 mithos28: you could do #lang racket/base, and (require racket)
02:45 mithos28: no you need a #lang line
02:45 nkkarthik: oh... why can't I just do (require eopl)?
02:46 mithos28: for a first approximation (there are ways to do what it does with out literally having a #lang)
02:46 mithos28: Because otherwise how would you know how to read the file?
02:46 mithos28: racket allows you to change it so the syntax of the program isn't the standard sexpression syntax
02:47 mithos28: look at scribble, where the default is text
02:47 nkkarthik: oh ok... I will try to figure it out
02:47 nkkarthik: the problem with #lang is... I can't load it into repl
02:48 mithos28: you can require it into the repl
02:48 nkkarthik: oh can I?
02:48 mithos28: or use enter!
02:48 nkkarthik: but it is written the #lang doesn't play with repl
02:49 mithos28: it works but differently than if you just typed those forms into the body
02:49 mithos28: body -> repl*
02:49 mithos28: so if your file was saved as "my-file.rkt", then you should run (require "my-file.rkt")
02:50 nkkarthik: oh
02:50 mithos28: you will probably also need a (provide (all-defined-out)) in your file
02:51 nkkarthik: but that's bad, isn't it?... to do all-defined-out
02:51 nkkarthik: can't I switch to that namespace... like in lisp?
02:51 mithos28: that would be enter!
02:51 nkkarthik: (enter! module-name)?
02:51 mithos28: yep
02:52 mithos28: is quack the repl enhancement thing?
02:53 nkkarthik: I have this simple file with text
02:53 nkkarthik: #lang eopl
02:53 nkkarthik: (define id? identifier?)
02:53 nkkarthik: when I load it in repl
02:53 nkkarthik: it says identifier? is unbound
02:53 mithos28: what do you mean 'load'?
02:53 nkkarthik: quack is a mode for emacs to work with scheme
02:54 mithos28: ok, you might want to look at xrepl if you get a chance. (require xrepl), it improves the repl for racket
02:54 nkkarthik: quack has the function 'load scheme file'
02:55 mithos28: so eopl doesn't have an identifier? binding
02:55 nkkarthik: oh is that what it means?
02:55 mithos28: yeah
02:55 nkkarthik: but identifier? is used all over in eopl
02:56 nkkarthik: (the book)
02:56 mithos28: http://docs.racket-lang.org/eopl/index.html
02:56 nkkarthik: when I type in repl identifier? says <procedure:identifier?> so it is available
02:57 nkkarthik: when I load the file it is not there
02:57 mithos28: thats because the repl is likely using the racket language
02:57 nkkarthik: ah... you are right... identifier? is not mentioned in the URL
02:58 nkkarthik: then how are others able to do the eopl exercises
02:58 nkkarthik: can I require both racket and eopl?
02:58 mithos28: you can add a (require racket/base)
02:58 mithos28: you should be able to, the only issue would be if they defined the same names with different bindings
02:59 nkkarthik: so can I do #lang racket/base and #lang eopl in the source file?
02:59 mithos28: no
02:59 mithos28: #lang eopl and (require racket/base)
02:59 mithos28: or #lang racket or #lang racket/base and (require eopl)
02:59 mithos28: I would do the first though
03:00 mithos28: they do slightly different things which are not likely important to you
03:00 nkkarthik: but we want the second one right?... first define all things in racket... then override them with eopl... if needed?
03:00 nkkarthik: ok I will do the first then
03:01 nkkarthik: one more small problem
03:01 mithos28: thats what it does for most forms (so you are right on that count), but #lang does other things
03:01 nkkarthik: I now have #lang eopl
03:01 nkkarthik: (require racket/base)
03:01 nkkarthik: (define id? identifier?)
03:02 mithos28: and if eopl changes those you want their versions
03:02 mithos28: but again likely you won't notice the difference
03:02 nkkarthik: yeah I guess so
03:03 nkkarthik: now i did this... #lang eopl (require racket/base) (define id? identifier?)
03:04 nkkarthik: first time I load the file... it worked
03:04 nkkarthik: second time I load again... it complains that 'cannot redefine constant id?'
03:05 nkkarthik: I think it is right... but I want to redefine it while developing
03:05 mithos28: http://docs.racket-lang.org/reference/eval.html?q=enter%21#(def._((quote._~23~25kernel)._compile-enforce-module-constants))
03:05 mithos28: you want to set compile-enforce-module-constants to be false
03:06 nkkarthik: oh ok... cool I will look into that...
03:06 mithos28: You will need to set that before loading the module up the first time
03:06 nkkarthik: so I will look at  enter!, xrepl, compile-enforce-module-constants
03:07 nkkarthik: oh ok I am trying that
03:09 nkkarthik: do I do this?
03:09 nkkarthik: (compile-enforce-module-constants #f)
03:10 mithos28: yep
03:10 nkkarthik: in the file?
03:10 (quit) close-paren: Ping timeout: 246 seconds
03:10 nkkarthik: so I have
03:10 nkkarthik: #lang eopl
03:10 nkkarthik: (require racket/base)
03:10 nkkarthik: (compile-enforce-module-constants #f)
03:10 nkkarthik: (define id? identifier?)
03:10 mithos28: no you need to do it in the repl
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03:11 mithos28: before you load the module into the repl
03:11 nkkarthik: oh that doesn't belong to file?
03:11 nkkarthik: I have to enter in the repl
03:12 mithos28: yes it changes how the repl works so that you can do redefinitions
03:14 nkkarthik: wow... it worked!!!
03:14 nkkarthik: hey thank you so much mithos28
03:15 nkkarthik: you helped me a lot
03:15 mithos28: glad to be of help
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04:40 MightyFoo: morning all
04:41 Cryovat: Pip pip to you, good sir
04:42 MightyFoo: Crovat: thanks for reminding me... i've forgotten to wear my monocle and top hat
04:42 Cryovat: Haha
04:42 Cryovat: How could your manservant allow you to appear in public like that?
04:43 MightyFoo: I'll have the gamekeeper deal him a sound beating
04:44 Cryovat: That's a relief to hear :)
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05:09 nkkarthik: in the repl, how can i quickly find out what a function does?
05:09 nkkarthik: I mean in clojure I can do (doc symbol?) in repl
05:10 scott_: nkkarthik: if you're using xrepl, try ,doc symbol?
05:10 scott_: it opens documentation in your web browser
05:10 nkkarthik: hmm... I am on emacs/quack... it opens racket... repl
05:10 scott_: oh xrepl's thing is just short for (help symbol?)
05:10 scott_: try that
05:11 nkkarthik: it seems i am not in xrepl
05:11 nkkarthik: it scolds... reference to an identifier before its definition: help in module: 'eop
05:12 nkkarthik: should I shift over to xrepl?
05:12 scott_: maybe if you (require racket/help) ?
05:12 scott_: I'm quite new to racket myself so I don't know much ;)
05:13 nkkarthik: yep it worked
05:13 nkkarthik: scott_: thank you
05:13 scott_: glad to help
05:13 nkkarthik: now I will see if I can ask it to open in emacs itself
05:14 nkkarthik: or maybe build some function which will read the url and print it in the repl itself... which is more pleasant IMHO...
05:14 nkkarthik: thank you, anyways... that was much help
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06:22 Jeanne-Kamikaze: is async-channel-put thread-safe ?
06:23 Jeanne-Kamikaze: i.e. can you have multiple threads talking to one receiver through the same channel ?
06:28 noelw: I'm pretty sure it is
06:29 Jeanne-Kamikaze: yeah it is, I was just reading the page on events
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06:53 nkkarthik: (identifier? 'a) => #f
06:53 nkkarthik: when does identifier? return true?
06:54 nkkarthik: (let ((a 10)) (identifier? a)) => #f
07:02 Jeanne-Kamikaze: (identifier? #'a)
07:03 nkkarthik: Jeanne-Kamikaze: ah... thank you... what could be the difference?
07:03 Jeanne-Kamikaze: well, it says "Returns #t if v is a syntax object and (syntax-e stx) produces a symbol."
07:04 Jeanne-Kamikaze: your 'a does not return a symbol
07:04 Jeanne-Kamikaze: in the first case it evaluates to itself (an id) and in the second case it evaluates to 10
07:04 nkkarthik: yeah read that but could make a thing out of it :)
07:04 Jeanne-Kamikaze: but don't trust me on that one
07:05 Jeanne-Kamikaze: this is my 3rd day of racket
07:05 nkkarthik: oh... it kinda makes sense now... after your explanation
07:05 nkkarthik: no no you must be right
07:05 nkkarthik: 'a evaluates to a symbol
07:05 nkkarthik: #'a evaluates to the value (i.e 10) in my example
07:05 Jeanne-Kamikaze: the other way around ?
07:06 nkkarthik: ,(define a 10)
07:06 nkkarthik: a
07:06 nkkarthik: does #racket have a bot?
07:06 Jeanne-Kamikaze: no idea
07:07 Jeanne-Kamikaze: is there a simple way to create thread safe mutable state ? I was looking for something like a box or a struct with protected setters
07:07 nkkarthik: nope I was wrong
07:08 Jeanne-Kamikaze: (and getters)
07:09 nkkarthik: Jeanne-Kamikaze: thank you for pointing it
07:11 Jeanne-Kamikaze: actually, that shouldn't make any sense
07:12 Jeanne-Kamikaze: in the first case 'a is a symbol, and it evaluates to itself so identifier? should return true ?
07:12 Jeanne-Kamikaze: #'a is a keyword
07:12 Jeanne-Kamikaze: *so it should
07:13 Jeanne-Kamikaze: ehm nvm, I messed up with all the ?s
07:13 noelw: #'a is syntax
07:14 noelw: Syntax is represented by its own data type
07:15 nkkarthik: is it like ':sym' keyword in lisp?
07:15 noelw: I dunno, but I expect it isn't
07:15 noelw: thread safe mutable state: box-cas! is one way of doing it
07:16 nkkarthik: noelw: ok thank you
07:16 noelw: lists are a data structure
07:16 noelw: vectors are a data structure
07:16 noelw: structs are a data structure
07:16 noelw: syntax is another data structure
07:17 noelw: If box-cas doesn't do the job, build your own using a semaphore
07:19 nkkarthik: I was confused with why (identifier? #'a) => #t and (identifier? 'a) => #f
07:20 nkkarthik: I am going through EOPL book and if I have to parse string "(let ((a 10)) a)"
07:21 nkkarthik: then (identifier? (caaadr expr) which is 'a should return true, I thought
07:21 DT``: nkkarthik, symbols are not identifiers.
07:21 noelw: You know what a macro is?
07:21 nkkarthik: I guess so
07:22 noelw: A macro is a function from syntax to syntax
07:22 noelw: When Racket reads source code, it stores that source code in a syntax data structure
07:22 noelw: Syntax is NOT (NOT NOT NOT!) a list
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07:22 noelw: It is a distinct data type
07:22 nkkarthik: oh ok... so this is different from lisp?
07:23 noelw: Yes
07:23 noelw: Modern macro systems don't represent source using lists
07:23 nkkarthik: lisp macros use symbols
07:23 noelw: Lists dont' have anywhere to put the information you need to maintain hygiene
07:23 noelw: etc
07:24 nkkarthik: oh ok... this must be what I heard about hygiene macros
07:25 nkkarthik: so if my parser has to read an s-expr like this
07:25 nkkarthik: (define expr '(let ((a 10)) a))
07:26 nkkarthik: (identifier? (caaadr expr)) will be false
07:26 nkkarthik: I can't parse that list with my parser if I use identifier?
07:27 noelw: Yes, because you're using a list to represent syntax
07:27 noelw: Try datum->syntax if you really want to use syntax
07:27 noelw: BUT
07:27 nkkarthik: but?
07:27 noelw: I expect for EOPL you don't want to use syntax
07:28 noelw: as none of the code samples will work
07:28 nkkarthik: EOPL book didn't mention anything about 'syntax' and hygiene macros... but uses identifier? all over
07:28 noelw: They must have their own definition of identifier?
07:28 nkkarthik: oh!... yeah I remember... #lang eopl din't had any identifier? function
07:29 nkkarthik: I imported it from racket/base
07:30 nkkarthik: I think I will just go with symbol? then
07:30 noelw: Yeah, that sounds expedient
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07:31 nkkarthik: noelw: thank you very much for your patience
07:31 noelw: no problemo
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08:37 nkkarthik: I have a file env.scm (which has function empty-env)
08:37 nkkarthik: I have let.scm which does (require "env.scm")
08:38 nkkarthik: but I am unable to use 'empty-env' function
08:38 nkkarthik: from env.scm
08:38 noelw: Have you 'provide'ed empty-env?
08:38 noelw: (provide empty-env)
08:39 nkkarthik: in env.scm... I tried to have (provide (all-defined-out))
08:39 nkkarthik: but it gave me error bad syntax at (all-defined-out)
08:40 nkkarthik: env.scm: I have these two lines at the beginning
08:40 nkkarthik: #lang eopl
08:40 nkkarthik: (provide (all-defined-out))
08:41 noelw: Oh. That's probably it
08:41 Jeanne-Kamikaze: is the racket reference made using a particular documentation tool ?
08:41 noelw: I doubt the eopl language includes the module language
08:41 noelw: Racket docs are created using Scribble
08:42 nkkarthik: oh can I include it myself?
08:42 noelw: Yeah, you can import that stuff from racket/base
08:42 nkkarthik: cool... let me try that
08:45 nkkarthik: env.scm: (provide (all-defined-out)) worked
08:45 nkkarthik: but empty-env is still not visible in let.scm
08:45 noelw: What is do (require "env.scm") from the REPL?
08:45 noelw: If empty-env available?
08:47 nkkarthik: hey empty-env is available in repl... if I do (require "env.scm") in repl
08:47 nkkarthik: why doesn't require work in let.scm then?
08:48 noelw: What language is let.scm written in?
08:49 nkkarthik: wow... I restarted repl and now it works
08:50 nkkarthik: it's written in normal scheme itself
08:50 nkkarthik: I have #lang eopl at the top
08:50 nkkarthik: and as you told me to include
08:50 nkkarthik: (require racket/base)
08:50 nkkarthik: (require "env.scm")
08:50 nkkarthik: now I think somehow it works
08:51 nkkarthik: noelw: thank you... you are helping me a lot today :)
08:51 noelw: no worries
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10:39 RacketCommitBot: [racket] plt pushed 2 new commits to master: http://git.io/oKqS_A
10:39 RacketCommitBot: [racket/master] Cleanup builtin structs types. - Eric Dobson
10:39 RacketCommitBot: [racket/master] Add promise support to type->contract. - Eric Dobson
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11:24 asumu: nkkarthik: FYI, if you look at the source code provided with the book, they use (define identifier? symbol?)
11:25 asumu: I think this is specific to the 3rd edition of the book.
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11:30 nkkarthik: asumu: thank you :) yeah I did the same with noelw's help
11:31 nkkarthik: but there is a small problem I faced... when I (require racket/base) it complains identifier? can't be redefined
11:31 nkkarthik: so I think I will just use symbol? mostly
11:32 nkkarthik: asumu: thank you by the way
11:33 nkkarthik going to hunt for some food
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11:46 soegaard: Any Windows 7 users? I had a student today that installed DrRacket from new. Everything worked fine - except starting the documentation. Neither F1 in DrRacket, Helpdesk from the menu nor the the shortcut in the start menu worked.
11:46 soegaard: However clicking the index.html file in C:\Programs\Racket\doc (I think) worked fine.
11:47 soegaard: Is there some kind of security setting that must be changed?
11:49 nilyaK: Hopefully somebody comes along to reply, I use it with Win7 but I am not on that machine atm and won't have access until I get home. :X
11:49 nilyaK: If the user has an Internet connection while using it though the online documentation is really great!
11:52 soegaard: FWIW the user in question did not have Chrome installed (only IE was present)
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11:58 soegaard: rudybot: tell nkkarthik Perhaps use (require (except-in racket/base identifier?)) to everything except the binding of identifier?
11:58 rudybot: soegaard: Are you using w3m-el from the debian repos nkkarthik?
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12:28 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/HBS6NQ
12:28 RacketCommitBot: [racket/master] Make Typed Racket integration tests run in parallel. - Sam Tobin-Hochstadt
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12:31 tim-brown: soegaard: check the "keybindings" on windows
12:31 soegaard: tim-brown: What do you mean?
12:31 tim-brown: for some reason my windows 7 is using emacs bindings (not what i'm used to with unix)
12:31 tim-brown: gack... i'm not near my win7 machine neither
12:32 tim-brown: but even control-s doesn't save (c-x;s)
12:32 tim-brown: very odd.
12:32 soegaard: That would explain why F1 would't work - but not why I couldn't start HelpDesk from the menu.
12:32 tim-brown: anyway, i think it's tools (or view?) has a "show current keybindings"
12:32 tim-brown: you'll get a list of bindings -- and might find help from there
12:33 tim-brown: no comment re HelpDesk on menu
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12:33 tim-brown: this is all from (recent) memory -- good luck to your student
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12:34 soegaard: I think it is the mechanism that opens an html-file in a browser that somehow doesn't work. Hopefully to some easily fixed setting in Windows.
12:34 tim-brown: night all
12:34 asumu: soegaard: there is a "Browser" preference in the preferences menu. Any idea what your student has that set to?
12:34 asumu: tim-brown: night.
12:35 soegaard: No but I'll next time.
12:36 soegaard: That tab on OS X only displays proxy settings ?
12:36 asumu: Oh, maybe it only shows that in Linux? Huh.
12:36 soegaard: I saw this http://lists.racket-lang.org/users/archive/2011-May/045340.html   and thought it might be related.
12:37 soegaard: But he at least sees a browser.
12:38 soegaard: Maybe the best advice would be "Install Chrome"
12:38 soegaard: https://groups.google.com/forum/?fromgroups#!topic/racket-users/X37KBfaZ9Oo%5B1-25%5D
12:38 rudybot: http://tinyurl.com/8djebhn
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12:46 RacketCommitBot: [racket] plt pushed 7 new commits to master: http://git.io/I_oSVA
12:46 RacketCommitBot: [racket/master] Make TR's ignore-some property work even if there isn't an internal form. - Eric Dobson
12:46 RacketCommitBot: [racket/master] Allow contract definitions created from expressions to be fixed up. - Eric Dobson
12:46 RacketCommitBot: [racket/master] Add way for code to attach typechecks to itself, and implemented make-predicate. - Eric Dobson
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13:06 jonrafkind: I see a lot of these "warning in: cloop in module: '#%utils: optimizer detects procedure incorrectly applied to 1 arguments: map
13:06 jonrafkind: " from git head today while running xform
13:08 samth: jonrafkind: good catch
13:08 samth: bug here: https://github.com/plt/racket/blob/master/src/racket/src/startup.rktl#L584
13:09 jonrafkind: did you already know about it or did you just find it very fast?
13:12 samth: jonrafkind: i know where to look
13:13 samth: if it's in a module with a #% name, then it's in `startup.rktl`
13:13 samth: and i then searched for `cloop`
13:13 samth: and then for `map`
13:13 jonrafkind: I get a whole bunch of other 'optimizer detects incorrect procedure...' in the rest of the build
13:13 jonrafkind: but they have been there for a while
13:13 jonrafkind: warning in: /home/jon/svn/plt/collects/mred/private/wx/common/rbtree.rkt:242:0: remove-min in module: 'rbtree: optimizer detects procedure incorrectly applied to 0 arguments: error
13:15 (quit) dzhus: Quit: -_-
13:16 samth: well, fix it
13:16 jonrafkind: warning in: /home/jon/svn/plt/collects/drracket/arrow.rkt:107:0: crop-to in module: 'arrow: optimizer constant-fold attempt failed: /: division by zero
13:16 jonrafkind: warning in: /home/jon/svn/plt/collects/typed-racket/typecheck/tc-app/tc-app-hetero.rkt:77:0: tc/hetero-set! in module: 'tc-app-hetero: optimizer detects procedure incorrectly applied to 5 arguments: index-error
13:16 jonrafkind: ok ill look at some of them and fix the easy ones
13:19 samth: i got the TR one
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13:20 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/saWFDQ
13:20 RacketCommitBot: [racket/master] Fix typo detected by optimizer. - Sam Tobin-Hochstadt
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13:20 jonrafkind: warning in: /home/jon/svn/plt/collects/drracket/private/unit.rkt:3680:8: loop in module: 'unit: optimizer constant-fold attempt failed: car: contract violation
13:20 jonrafkind: expected: pair?
13:20 jonrafkind: given: '()
13:20 jonrafkind: warning in /home/jon/svn/plt/collects/framework/main.rkt:241:14: opt/c doesn't know the contract (let ((old-children (send parent get-children))) (and/c (is-a?/c area-container-window<%>) (λ (child) (andmap eq? (append old-children (list child)) (send parent get-children)))))
13:21 jonrafkind: warning in: /home/jon/svn/plt/collects/racket/require-transform.rkt:188:2: convert-relative-module-path in module: 'require-transform: optimizer detects procedure incorrectly applied to 2 arguments: car
13:21 jonrafkind: warning in: /home/jon/svn/plt/collects/ffi/unsafe.rkt:1664:40: ...s/ffi/unsafe.rkt:1664:40 in module: 'unsafe: optimizer detects procedure incorrectly applied to 3 arguments: log-message
13:21 jonrafkind: i think thats all of them
13:21 jonrafkind: i dont build all of the collects though
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14:09 neilv: i have a situation in which db "connection?" is true one place and then later seems to be false, even though it still prints like one
14:10 neilv: i wonder whether i'm getting multiple copies of a module somehow
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14:15 samth: neilv: are you using multiple places?
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14:28 RacketCommitBot: [racket] plt pushed 6 new commits to master: http://git.io/XIFqng
14:28 RacketCommitBot: [racket/master] [honu] remove context argument from macro transformers - Jon Rafkind
14:28 RacketCommitBot: [racket/master] [honu] add primitive macro form - Jon Rafkind
14:28 RacketCommitBot: [racket/master] [honu] wrap syntax with (semicolon ...) when a ; is present - Jon Rafkind
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14:34 neilv: samth: no, not using multiple places
14:35 samth: neilv: presumably you're instantiating the db module multiple times somehow, although i'm not sure how
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14:41 neilv: this large app has a few modules that re-provide other modules, and requires on the original modules and the re-providing modules. historically, this has worked fine, but i suppose we could finally be tickling a bug
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14:44 samth: neilv: i doubt that's it
14:44 neilv: (require (prefix-in db: db/base)         (prefix-in db: db/postgresql)         openssl)
14:44 neilv: that should be fine right there
14:44 samth: more likely something with dynamic-require
14:44 samth: i'd ask on the list, or ask ryan directly
14:46 neilv: aha!
14:46 neilv: that could be it
14:48 neilv: if dynamic-require is the problem, it might have worked in the past because the db connection stuff was implemented as a c extension
14:48 neilv: there is also some eval going on
14:49 samth: yes, if you have the db library in two different namespaces, that will produce two different `connection` types
14:49 neilv: ok, looks like dynamic-require is not involved at this point in the code, but eval might be
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14:51 RacketCommitBot: [racket] plt pushed 3 new commits to master: http://git.io/FFVYYw
14:51 RacketCommitBot: [racket/master] Move list-set and list-update to unstable/list. - Eric Dobson
14:51 RacketCommitBot: [racket/master] Don't use places for running single tests. - Sam Tobin-Hochstadt
14:51 RacketCommitBot: [racket/master] Add type for `processor-count`. - Sam Tobin-Hochstadt
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14:51 neilv: samth: thanks. eval seems like a likely culprit. i'll see whether that's actually happening (it's a big system)
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15:11 neilv: it creates a namespace for the eval, using a bunch of namespace-requires. i'm guessing that's where a second copy of the module is happening
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15:13 samth: neilv: yes, almost certainly
15:13 samth: you should probably use `namespace-attach` to share the `db` module
15:14 neilv: i wish old scheme books had never told people about eval
15:14 neilv: it's almost never necessary
15:14 neilv: at the application programmer level, i mean
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15:23 samth: neilv: it's kind of a part of history, though
15:23 danl_ndi: is there a way to get Racket to eval (require-for-syntax "file.scm") properly?  (we have code that is used in both mzscheme and racket)
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15:25 samth: danl_ndi: just do a `(require (only-in mzscheme require-for-syntax))` first
15:26 samth: in the namespace you're doing the eval in
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15:31 danl_ndi: actually I did a (define-syntax (require-for-syntax stx) (syntax-case stx () ((_ name) #'(require (for-syntax name)))))
15:31 danl_ndi: i had mistyped something, turns out it works
15:35 neilv: if people who wrote textbooks extolling the virtues of "eval" could hear all the cursing i am doing, they would be rushing revised editions to the printers, in fear of bodily harm
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15:40 nilyaK: of course they'd print after eval
15:41 nilyaK: >_>
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15:42 neilv: that was criminally bad
15:47 nilyaK: Bad puns are the best puns :P
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16:06 neilv: > I never metacircular evaluator I didn't like
16:06 neilv: >    -- [[Neil-Van-Dyke]] on #scheme @ (http://www.freenode.org)
16:06 neilv: http://community.schemewiki.org/?channel-quotes
16:12 neilv: samth: thanks a lot for the pointer in the right direction. it works
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16:39 Jeanne-Kamikaze: that moment when you open a terminal and type: (ls -l)
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18:26 RacketCommitBot: [racket] plt pushed 1 new commit to master: http://git.io/TKFWGg
18:26 RacketCommitBot: [racket/master] [honu] remove context argument - Jon Rafkind
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19:37 RacketCommitBot: [racket] plt pushed 2 new commits to master: http://git.io/VwXjKg
19:37 RacketCommitBot: [racket/master] fix docs for `deftech': mention case folding - Matthew Flatt
19:37 RacketCommitBot: [racket/master] scribble/manual: add `#:normalize?' option to `deftech' et al. - Matthew Flatt
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20:59 neilv: db/postgresql works well so far
21:02 offby1: rudybot uses db/sqlite
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21:31 RacketCommitBot: [racket] plt pushed 2 new commits to master: http://git.io/jZdeoQ
21:31 RacketCommitBot: [racket/master] fix a bug in the event handling that would cause updates - Robby Findler
21:31 RacketCommitBot: [racket/master] disable standalone submod.rkt test. it is run by run-all.rkt and - Robby Findler
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