2024/11/08

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2024-11-08 20:56:42 +0100alexherbo2(~alexherbo@2a02-8440-3200-3777-6c66-54b5-7b86-7066.rev.sfr.net) alexherbo2
2024-11-08 20:56:23 +0100alexherbo2(~alexherbo@2a02-8440-3200-3777-6c66-54b5-7b86-7066.rev.sfr.net) (Remote host closed the connection)
2024-11-08 20:51:48 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) (Ping timeout: 252 seconds)
2024-11-08 20:51:37 +0100 <yin> makes sense. i'm still getting used to patterns
2024-11-08 20:51:30 +0100 <mauke> f (g -> y@Pattern) =
2024-11-08 20:51:13 +0100 <geekosaur> with parens around `Pattern` as needed
2024-11-08 20:51:07 +0100 <yin> nice, that works. ty
2024-11-08 20:50:59 +0100 <geekosaur> `| y@Pattern <- g x = …`
2024-11-08 20:50:56 +0100 <yin> p@Pattern ?
2024-11-08 20:50:38 +0100 <geekosaur> use an as-pattern?
2024-11-08 20:50:01 +0100 <yin> is there a better way to write ` f x | Pattern <- g x , y <- g x = h y ; ...` ?
2024-11-08 20:49:42 +0100 <briandaed> no need to sorry
2024-11-08 20:49:12 +0100 <darkling> Sorry.
2024-11-08 20:49:10 +0100 <darkling> -ECHANNEL
2024-11-08 20:47:54 +0100JuanDaugherty(~juan@user/JuanDaugherty) (Quit: JuanDaugherty)
2024-11-08 20:47:11 +0100misterfish(~misterfis@84.53.85.146) misterfish
2024-11-08 20:46:55 +0100alexherbo2(~alexherbo@2a02-8440-3200-3777-6c66-54b5-7b86-7066.rev.sfr.net) alexherbo2
2024-11-08 20:46:49 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) merijn
2024-11-08 20:45:34 +0100 <EvanR> .oO( parse don't validate ? )
2024-11-08 20:40:04 +0100Smiles(uid551636@id-551636.lymington.irccloud.com) Smiles
2024-11-08 20:36:02 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) (Ping timeout: 252 seconds)
2024-11-08 20:34:33 +0100 <darkling> *Beered.
2024-11-08 20:34:25 +0100 <darkling> I are Beard.
2024-11-08 20:32:01 +0100peterbecich(~Thunderbi@syn-047-229-123-186.res.spectrum.com) peterbecich
2024-11-08 20:31:01 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) merijn
2024-11-08 20:29:58 +0100user363627(~user@user/user363627) user363627
2024-11-08 20:28:37 +0100JuanDaugherty(~juan@user/JuanDaugherty) JuanDaugherty
2024-11-08 20:24:37 +0100tromp(~textual@92-110-219-57.cable.dynamic.v4.ziggo.nl)
2024-11-08 20:20:17 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) (Ping timeout: 248 seconds)
2024-11-08 20:17:50 +0100Smiles(uid551636@id-551636.lymington.irccloud.com) (Quit: Connection closed for inactivity)
2024-11-08 20:15:14 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) merijn
2024-11-08 20:14:19 +0100 <tomsmeding> is what I meant
2024-11-08 20:14:17 +0100 <kaol> Are you sure you didn't do it with megaparsec the last time? It has more knobs including type variable for the error type.
2024-11-08 20:14:16 +0100 <tomsmeding> sure, but the Parser monad doesn't support anything more general than String
2024-11-08 20:14:09 +0100 <geekosaur> `fail :: String -> m a`
2024-11-08 20:13:57 +0100 <geekosaur> https://downloads.haskell.org/ghc/latest/docs/libraries/base-4.20.0.0-1f57/Control-Monad-Fail.html…
2024-11-08 20:13:43 +0100 <tomsmeding> "requires"?
2024-11-08 20:13:19 +0100 <geekosaur> afaik `fail` itself requires it?
2024-11-08 20:12:57 +0100 <tomsmeding> and the type that `fail` uses in the parser monad looks pretty monomorphically String
2024-11-08 20:11:50 +0100 <tomsmeding> it has `fail` if you're okay with strings
2024-11-08 20:11:41 +0100 <kqr> Hm. I'd hoped I could hook into the parser monad itself, but maybe it doesn't support failure in the way I think of it?
2024-11-08 20:11:15 +0100 <kaol> ExceptT is one option.
2024-11-08 20:07:43 +0100 <kqr> Hm. I'm looking at doing some validation in an Attoparsec parser and I want to fail the parse if the validation fails – ideally with a value of some custom error type. I feel like I have done this before but I cannot for the life of me figure out how I did it now.
2024-11-08 20:07:03 +0100longlongdouble(~longlongd@169.150.196.101) (Ping timeout: 245 seconds)
2024-11-08 20:06:06 +0100 <ncf> ah, https://en.wikipedia.org/wiki/Natural_transformation#Whiskering
2024-11-08 20:06:05 +0100 <famubu> Okay, looks like I got a few terms to look up. Thanks. Had seen horizonatal composition mentioned in the wikipedia article. Reading nlab now.
2024-11-08 20:05:10 +0100 <ncf> or pure @T @(T a)
2024-11-08 20:04:40 +0100shapr(~user@2601:19c:417e:5434:6d2c:aeb2:81b3:3df4) shapr
2024-11-08 20:04:30 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) (Ping timeout: 252 seconds)
2024-11-08 20:04:06 +0100 <ncf> in haskell, Tη is fmap @T pure, while ηT is pure @(T a)