samth changed the topic of #racket to: Racket v7.3 has been released: https://blog.racket-lang.org/2019/05/racket-v7-3.html -- Racket -- https://racket-lang.org -- https://pkgs.racket-lang.org -- Paste at http://pasterack.org
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<lavaflow> will a buffered async channel get GC'd when no references to it exist, but it has something buffered?
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<teardown> i'd like to use #lang sicp with the cli racket rather than in dr racket. i tried 'racket -i -I /home/username/.racket/6.4/pkgs/sicp' which is wrong, how do i specify which lang to use in interactive mode? using 'racket --help' indicated that -I can specify the lang, but what type of file do i need to point that to?
<lavaflow> if you have the sicp package installed, `racket -I sicp` should do it.
<teardown> lavaflow: that worked! thank you!
<lavaflow> np
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<teardown> in racket's sicp mode, (define size 2) doesnt return size as the value, it returns nothing. i know this is trivial
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<jcowan> teardown: In Scheme, definitions aren't expressions and don't have values.
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<teardown> jcowan: thanks. i wonder why sicp didnt mention this
<teardown> (it did say 'lisp' programmers know the value of everything and the price of nothing)
<teardown> perlis
<teardown> i just assumed that from the start the book would cover scheme
<jcowan> SICP isn't designed to teach Scheme.
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<dzoe> How to use scribble PDF output via LaTeX with custom documentclass? Using prefix file allows me to set \documentclass{something}, but it's got more quirks than expected.
<dzoe> 1) The class must be in texmf path, cannot be in current directory (which is what I use to develop my templates) and 2) even if I let scribble output the corresponding LaTeX source, I am unable to run it through pdflatex with any other class than "article".
<dzoe> Reading the produced source makes me thing, it's doing some heavy "misuse" of the @ letter/other - which makes it really hard to nail down the minimal example of what is wrong (and then fix it).
<dzoe> Anyone succeeded with custom documentclass for scribble LaTeX output?
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<teardown> jcowan: fair enough
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<zacts> isn't the latest release v7.4?
<zacts> I noticed v7.3 in the topic
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<lavaflow> I'm trying to write a macro that wraps define, such that the procedure it creates invokes pre-hooks with all the input and post-hooks with all the output
<lavaflow> I'm matching name as the name of the procedure, and want to create from it a symbol name-pre-hook
<lavaflow> e.g. (define/with-hooks (add x y) ...) would create hooks addressible with the symbols 'add-pre-hook and 'add-post-hook
<lavaflow> I can't quite figure out how to accomplish that though
<lavaflow> Also I don't think what I have right now could work with keyword or optional requirements...
<lavaflow> I'm thinking I just have the macro expand it to something like (string->symbol (string-append (symbol->string ...) ...))
<lavaflow> but I'd rather have something that works when the macro is expanded, not at runtime.
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samth changed the topic of #racket to: Racket v7.4 has been released: https://blog.racket-lang.org/2019/08/racket-v7-4.html -- Racket -- https://racket-lang.org -- https://pkgs.racket-lang.org -- Paste at http://pasterack.org
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<ZombieChicken> samth: ty
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<dzoe> Ah, finally :)
<lavaflow> aagh, my macro also doesn't work with rest arguments
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<dzoe> The summer semester was not satisfying at all.
<dzoe> One work submitted in Java, another one in Python.
<dzoe> How I miss the spring semester with Clojure...
<dzoe> Btw, scribble's LaTeX output clashes with [table] option of color/xcolor package, in case anyone needs to know that too.
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