IRC channel logs

<davexunit>fun with guile: https://media.dthompson.us/mgoblin_media/media_entries/47/bullets.gif

<jmd>According to the /topic this channel is destroying the environment.

<yuqian>In an example, there is a line with function (read-line) but while I run it, my guile alarmed because it doesn't know what is (read-line).

<yuqian>Who knows what has happened? Thank you!^_^

<jchmrt>yuqian: read-line is a function defined in (ice-9 rdelim), so to use it you need to import that module with: (use-modules (ice-9 rdelim)). See this page in the reference manual: https://www.gnu.org/software/guile/manual/html_node/Line_002fDelimited.html

<daviid>happy saterday!

<rain1>cheers :)

<rain1>you too

<daviid>tx

<davexunit>ACTION wishes (ice-9 match) could destructure bytevectors

<mark_weaver>davexunit: in general, when dealing with compound structures that cannot store arbitrary scheme data (e.g. symbols), the pattern cannot be represented using that structure type.

<davexunit>mark_weaver: makes sense

<davexunit>just staring at a bunch of record type destructuring that I'm going to remove to try out an optimization using packed bytevectors.

<civodul>maybe you can write a custom pattern matcher

<civodul>a bit unsatisfactory, but hey

<davexunit>I could

<davexunit>I think it's easier to just rewrite what I have that used it.

<davexunit>trying to aggressively optimize some vector math operations with inlining, float unboxing, etc.

<mark_weaver>you can use a pattern like (= bytevector->list (a b c ...))

<davexunit>that's a good point.

<davexunit>I'll keep that in mind. it's not appropriate for this case because it allocates a fresh list.

<davexunit>but I can see it being useful elsewhere.

<rain1>There are some pattern matchers in scheme which can be extended with new instructions for stuff like this

<rain1>I don't know if thats any use

<davexunit>I'm just going to not use a pattern matcher here

<davexunit>it will be okay

<rain1>oh okay

<rain1>I had a pretty bad experience trying to debug my program for a while

<rain1>then I added a (display x) debug thing and it worked

<rain1>so i deleted it and it continued to work

<rain1>I guess guile somehow cached a compile of when the code was wrong

<davexunit>unlikely

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IRC channel logs

2016-02-27.log