#racket on 2020-07-20 — irc logs at freenode.irclog.whitequark.org

2020-05-03 17:48 samth changed the topic of #racket to: Racket v7.7 has been released: https://blog.racket-lang.org/2020/05/racket-v7-7.html -- Racket -- https://racket-lang.org -- https://pkgs.racket-lang.org -- Paste at http://pasterack.org

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00:57 <samth> lavaflow: you can sort on eq-hash-code

01:02 <lavaflow> samth: awesome, thank you!

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12:44 <Boarders> does anyone know the best resources (courses or papers included) for writing your own language in racket?

12:45 <bremner> beautiful racket is a book on that toic

12:45 <bremner> topic

12:46 <bremner> so is PLAI, from a certain point of view

12:46 <Boarders> thanks! anything else would be interesting too

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17:50 <lavaflow> remove* seems extremely slow, O(n*m) unless I'm mistaken, two loops nested

17:50 <lavaflow> the same can be accomplished with this (define (my-remove* d lst) (filter (negate (curry set-member? (list->set d))) lst))

17:50 <lavaflow> or am I mistaking something?

17:52 <lavaflow> it's like the difference between 50 ms and 50 seconds if I (remove* (range 10000) (range 100000))

17:52 <lexi-lambda> I think remove* is essentially intended for situations where the first list is small.

17:54 <lavaflow> seemingly so

17:54 <lavaflow> it's faster in cases where the first list is very small

17:56 <lavaflow> even for (remove* (range 100) (range 1000)) on my hardware it's the difference between 5ms and less than 1ms

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19:57 <aaaaaa> Hi all. My program consumes too much memory. Is there a way to see what space occupies each (global) variable?

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20:28 <erkin> aaaaaa: Have you tried the profiler?

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