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Logs: freenode/#haskell

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2020-11-26 19:52:40 × sord937 quits (~sord937@gateway/tor-sasl/sord937) (Quit: sord937)
2020-11-26 19:53:20 × Finianb1 quits (~Finianb1@71-218-235-186.hlrn.qwest.net) (Client Quit)
2020-11-26 19:57:12 × mputz quits (~Thunderbi@dslb-084-058-211-084.084.058.pools.vodafone-ip.de) (Quit: mputz)
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2020-11-26 19:58:16 × orion quits (~orion@c-76-19-238-5.hsd1.ma.comcast.net) (Changing host)
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2020-11-26 20:01:10 × Franciman quits (~francesco@host-82-54-193-143.retail.telecomitalia.it) (Ping timeout: 246 seconds)
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2020-11-26 20:08:29 × kuribas quits (~user@ptr-25vy0i7d0jyf2exvnea.18120a2.ip6.access.telenet.be) (Quit: ERC (IRC client for Emacs 26.3))
2020-11-26 20:10:59 × danvet quits (~Daniel@2a02:168:57f4:0:efd0:b9e5:5ae6:c2fa) (Ping timeout: 272 seconds)
2020-11-26 20:15:44 × jpds quits (~jpds@gateway/tor-sasl/jpds) (Remote host closed the connection)
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2020-11-26 20:18:55 × royal_screwup21 quits (52254809@gateway/web/cgi-irc/kiwiirc.com/ip.82.37.72.9) (Quit: Connection closed)
2020-11-26 20:19:00 hackage ukrainian-phonetics-basic 0.3.1.1 - A library to work with the basic Ukrainian phonetics and syllable segmentation. https://hackage.haskell.org/package/ukrainian-phonetics-basic-0.3.1.1 (OleksandrZhabenko)
2020-11-26 20:19:08 ← pokid parts (~pokid@unaffiliated/pokid) ()
2020-11-26 20:19:20 → royal_screwup21 joins (52254809@gateway/web/cgi-irc/kiwiirc.com/ip.82.37.72.9)
2020-11-26 20:19:27 × nf quits (~n@monade.li) (Read error: Connection reset by peer)
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2020-11-26 20:19:31 × orion quits (~orion@c-76-19-238-5.hsd1.ma.comcast.net) (Changing host)
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2020-11-26 20:19:49 × Franciman quits (~francesco@host-82-54-193-143.retail.telecomitalia.it) (Quit: Leaving)
2020-11-26 20:19:53 × Fractalis quits (~Fractalis@2601:987:280:8d40:8819:4ab1:66e9:952a) (Client Quit)
2020-11-26 20:20:18 <sondr3> I want to read a directory and filter out files based on it's extension, I get all the contents fine with `listDirectory`, but as soon as I filter the list it becomes empty
2020-11-26 20:20:35 <sondr3> I'm probably missing something to do with the IO monad
2020-11-26 20:21:06 × nf__ quits (~n@monade.li) (Client Quit)
2020-11-26 20:21:14 <monochrom> Show actual code?
2020-11-26 20:21:18 <shapr> sondr3: can you pastebin your code?
2020-11-26 20:21:18 → wonko7 joins (~wonko7@lns-bzn-55-82-255-183-4.adsl.proxad.net)
2020-11-26 20:21:19 <monochrom> @where paste
2020-11-26 20:21:19 <lambdabot> Help us help you: please paste full code, input and/or output at eg https://paste.tomsmeding.com
2020-11-26 20:21:21 <geekosaur> @where paste
2020-11-26 20:21:21 <lambdabot> Help us help you: please paste full code, input and/or output at eg https://paste.tomsmeding.com
2020-11-26 20:21:29 → nf joins (~n@monade.li)
2020-11-26 20:22:58 <Uniaika> nf: nice reverse host
2020-11-26 20:23:10 <nf> thanks :)
2020-11-26 20:23:20 <sondr3> monochrom: geekosaur: https://paste.tomsmeding.com/dboZf8Up
2020-11-26 20:23:45 <avdb> How do I create on liner if then else cases in Haskell like in C? If I'm not wrong it should be possible with something like "x == foo? Nothing : Maybe a"
2020-11-26 20:24:07 → raehik joins (~raehik@cpc95906-rdng25-2-0-cust156.15-3.cable.virginm.net)
2020-11-26 20:24:14 <monochrom> > "aaaa" `isSuffixOf "a"
2020-11-26 20:24:16 <lambdabot> <hint>:1:20: error: <hint>:1:20: error: parse error on input ‘"’
2020-11-26 20:24:16 <geekosaur> sodr3, looks to me like you have your isSuffixOf reversed
2020-11-26 20:24:26 <tomsmeding> `if x == foo then Nothing else Just a`? avdb
2020-11-26 20:24:30 <shapr> > if 0 == 1 then "world broken" else "not equal"
2020-11-26 20:24:33 <lambdabot> "not equal"
2020-11-26 20:24:43 <geekosaur> it's looking for filenames which are suffixes of "hrx"
2020-11-26 20:24:44 → aarvar joins (~foewfoiew@50.35.43.33)
2020-11-26 20:24:54 <sondr3> geekosaur: doh
2020-11-26 20:25:13 ← aarvar parts (~foewfoiew@50.35.43.33) ()
2020-11-26 20:25:22 <avdb> tomsmeding: There was a method with symbols if I'm not wrong, might've just dreamed about it though.
2020-11-26 20:25:34 <avdb> If then else is already short enough but I don't like the verbosity
2020-11-26 20:25:52 <sondr3> geekosaur: yep, that was it. Thanks :facepalm:
2020-11-26 20:26:08 <shapr> avdb: pattern match? applicative?
2020-11-26 20:26:13 <Uniaika> nf: and I realise just now that you already follow me on Twitter :P
2020-11-26 20:26:32 <tomsmeding> avdb: `let cond ? (x, y) = if cond then x else y`
2020-11-26 20:26:43 <shapr> :-D
2020-11-26 20:26:43 <tomsmeding> but if-then-else is more readable :p
2020-11-26 20:26:52 <nf> Uniaika: ;D
2020-11-26 20:27:58 × elliott__ quits (~elliott@pool-108-51-141-12.washdc.fios.verizon.net) (Ping timeout: 260 seconds)
2020-11-26 20:28:01 <int-e> :t bool
2020-11-26 20:28:03 <lambdabot> a -> a -> Bool -> a
2020-11-26 20:28:11 <shapr> whoa, I like mario lang's github profile pic
2020-11-26 20:28:13 × juuandyy quits (~juuandyy@90.166.144.65) (Quit: Konversation terminated!)
2020-11-26 20:29:16 <int-e> > bool "nay" "aye" (0 == 1)
2020-11-26 20:29:18 <lambdabot> "nay"
2020-11-26 20:30:09 <shapr> that's neat
2020-11-26 20:30:49 <koz_> Yep, bool is handy sometimes.
2020-11-26 20:30:51 <koz_> Related:
2020-11-26 20:30:54 <koz_> :t maybe
2020-11-26 20:30:56 <lambdabot> b -> (a -> b) -> Maybe a -> b
2020-11-26 20:30:57 <koz_> :t either
2020-11-26 20:30:58 <lambdabot> (a -> c) -> (b -> c) -> Either a b -> c
2020-11-26 20:31:12 <int-e> :t foldr
2020-11-26 20:31:13 <lambdabot> Foldable t => (a -> b -> b) -> b -> t a -> b
2020-11-26 20:31:15 koz_ mumbles something about Boehm-Beraducci encodings.
2020-11-26 20:31:51 <shapr> does anyone have a tutorial for doing advent of code with nix? I'm mostly a nix newbie.
2020-11-26 20:32:28 <int-e> that question doesn't feel well-typed to me
2020-11-26 20:32:33 tomsmeding thought nix was a language for package configuration description, not for general-purpose programming
2020-11-26 20:32:43 <tomsmeding> not that you can't use it for that
2020-11-26 20:32:56 <tomsmeding> I guess
2020-11-26 20:32:58 × royal_screwup21 quits (52254809@gateway/web/cgi-irc/kiwiirc.com/ip.82.37.72.9) (Quit: Connection closed)
2020-11-26 20:33:03 <tomsmeding> may be slow
2020-11-26 20:33:18 <tomsmeding> anyone up for doing AOC in dhall?
2020-11-26 20:33:21 <koz_> tomsmeding: You can use it to set up a programming environment, along with your (non-Haskell) deps.
2020-11-26 20:33:23 → royal_screwup21 joins (52254809@gateway/web/cgi-irc/kiwiirc.com/ip.82.37.72.9)
2020-11-26 20:33:25 <shapr> tomsmeding: I have nixOS installed, but I'm still coming to grips with how to do development with it
2020-11-26 20:33:29 <koz_> I _guess_ that's what's being asked.
2020-11-26 20:33:58 <shapr> lucky for me, chessai got my most recent app working with nix: https://github.com/shapr/fermatslastmargin/blob/master/shell.nix
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