#racket on 2018-12-18 — irc logs at freenode.irclog.whitequark.org

2018-11-14 19:02 lexi-lambda changed the topic of #racket to: Racket v7.1 has been released: http://blog.racket-lang.org/2018/10/racket-v7-1.html -- Racket -- https://racket-lang.org -- https://pkgs.racket-lang.org -- Paste at http://pasterack.org

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14:35 <rain1> how do i check if my racket version is using chez?

14:35 <rain1> Welcome to Racket v7.0.

14:36 <rain1> I noticed the tests for my library run much faster, I wonder if it's because of chez?

14:42 <tautologico> "standard" racket 7.0 is not using chez

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14:42 <rain1> weird!

14:42 <rain1> i'm sure it's a lot faster...

14:43 <tautologico> there have been other improvements, some made to ease the transition to chez

14:46 <tautologico> I think the new I/O system is in, and the new expander

14:49 <tautologico> Version 7.0, July 2018

14:49 <tautologico> Replace the macro expander with a new, Racket-implemented expander

14:49 <tautologico> Add an initial implementation of Racket on Chez Scheme (in the

14:49 <tautologico> source distribution)

14:49 <tautologico> https://download.racket-lang.org/releases/7.1/doc/release/HISTORY.txt

14:49 <rain1> that's funny I thought the new expander was slower

14:49 <rain1> and my library is pretty macro heavy

14:50 <tautologico> I don't know, never seen any comparisons

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14:50 <jcowan> That was kind of the inspiration for the Chez project in the first place: the Scheme expander was so much slower than the C one when running as Racket bytecode.

14:51 <jcowan> The Chez project isn't about performance: it's about improving maintainability by getting rid of most of the C-for-performance code in Racket in favor of Scheme

14:52 <jcowan> Gotta love this Q & A: "What does the Chez community get out of Racket/Chez?" "Well, they get Racket."

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18:09 <iZarif> How to keep square brackets when pretty printing?

18:20 <friscosam> Unless you are printing syntax I don't think that information is available to the printer.

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19:35 <cemerick> Is there a way to get backspace in DrRacket to just cursor over closing, matched braces?

19:36 <cemerick> e.g. backspace on ([foo])| would yield ([foo]|)

19:36 <lexi-lambda> cemerick: not that I know of

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20:03 <cemerick> oh, I see the keybinding-lang, seems easy enough

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