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Logs: liberachat/#haskell

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2021-07-21 21:51:49 <arkanoid> got it, thanks. So I expect to learn the general way parameters are ordered on the way
2021-07-21 21:52:23 → aplainzetakind joins (~johndoe@captainludd.powered.by.lunarbnc.net)
2021-07-21 21:52:36 × mikoto-chan quits (~mikoto-ch@ip-213-49-189-31.dsl.scarlet.be) (Ping timeout: 252 seconds)
2021-07-21 21:53:02 <sm> arkanoid: usually the "thing to be operated on" is the last argument, so any other parameters come before that
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2021-07-21 21:54:48 <arkanoid> I see. So that's exactly the opposite of the world I'm coming from
2021-07-21 21:55:56 × takuan quits (~takuan@178-116-218-225.access.telenet.be) (Remote host closed the connection)
2021-07-21 21:56:01 <sm> really ? what's an example from that world ?
2021-07-21 21:56:22 × MQ-17J quits (~MQ-17J@d14-69-206-129.try.wideopenwest.com) (Ping timeout: 245 seconds)
2021-07-21 21:56:32 <sm> oh, fooobj.doSomething(a,b) ?
2021-07-21 21:57:38 <arkanoid> yeah, classical procedural/OOB, independently from the call syntax the "main" argument is generally the first one
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2021-07-21 21:58:46 <monochrom> After you have done quite a bit of "map (logBase 2) [x, y, z]" you will prefer not to have "logBase x 2".
2021-07-21 21:59:09 <sm> yes so in haskell you might often see fooDoSomething a b foo, because this plays well with partial application which Logio mentioned. Eg map (fooDoSomething a b) listoffoos works nicely.
2021-07-21 21:59:16 <arkanoid> well, I see that exercism uses stack to hide packages, so I cannot "import Data.List.Stack". I'll have to reinvent the wheel! Good
2021-07-21 21:59:35 × dunj3 quits (~dunj3@2001:16b8:30c4:6b00:b2db:db95:c4f5:af2c) (Remote host closed the connection)
2021-07-21 21:59:45 <arkanoid> thanks for all the hints
2021-07-21 22:00:12 <janus> arkanoid: do you know about 'flip' ?
2021-07-21 22:00:35 <monochrom> or x.logBase(2)
2021-07-21 22:01:45 <janus> or ",".join(array) hehehe
2021-07-21 22:01:50 <sm> this probably works, but wouldn't be idiomatic: foo&fooDoSomething a b
2021-07-21 22:01:51 <monochrom> haha
2021-07-21 22:02:10 <janus> i think that ordering has probably caused the most bikeshedding, measured in hours. if you consider how popular python is
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2021-07-21 22:13:57 × Null_A quits (~null_a@2601:645:8700:2290:5d44:532d:1cae:2f91) (Remote host closed the connection)
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2021-07-21 22:20:18 <dsal> arkanoid: You can add packages, but I don't know what Data.List.Stack is, so it may not be actively hiding it from you.
2021-07-21 22:20:45 <geekosaur> are you sure that's not Data.List.Split?
2021-07-21 22:22:04 × zfnmxt quits (~zfnmxtzfn@2001:470:69fc:105::2b32) (Quit: Reconnecting)
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2021-07-21 22:22:34 <arkanoid> sorry, I mistyped, I just mean Data.List.Split
2021-07-21 22:23:21 × zfnmxt quits (~zfnmxtzfn@2001:470:69fc:105::2b32) (Client Quit)
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2021-07-21 22:23:57 <geekosaur> install the "split" package
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2021-07-21 22:26:22 × dextaa quits (~DV@37.201.214.197) (Ping timeout: 246 seconds)
2021-07-21 22:27:45 <arkanoid> and also edit the .cabal file. I might be cheating, but that's ok
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2021-07-21 22:27:56 <zangi> can I use monad to repeat f in this `(f . f . f . f) x`?
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2021-07-21 22:30:22 <sm> it doesn't apparently require a monad
2021-07-21 22:30:30 <sm> https://hoogle.haskell.org/?hoogle=Int+-%3E+%28a+-%3E+a%29+-%3E+a+-%3E+a&scope=set%3Astackage shows some implementations
2021-07-21 22:30:40 × MQ-17J quits (~MQ-17J@d14-69-206-129.try.wideopenwest.com) (Ping timeout: 265 seconds)
2021-07-21 22:30:51 × drd quits (~drd@93-39-151-19.ip76.fastwebnet.it) (Ping timeout: 258 seconds)
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2021-07-21 22:32:08 × ph88 quits (~ph88@2a02:8109:9e00:7e5c:c502:f058:b589:c70c) (Ping timeout: 255 seconds)
2021-07-21 22:33:16 <ph88^> i made this Dockerfile to build haskell static binary https://bpa.st/LNHQ when i run the command stack build --ghc-options '-static -optl-static -split-sections' --docker --docker-image "haskell-build" i get this message https://bpa.st/6OFA how can i make it work with the right version ?
2021-07-21 22:33:41 <monochrom> Haha I found a typo in the Haskell 2010 Report. ascSymbol has U+22C6 ⋆ where it should have U+002A *
2021-07-21 22:34:23 × Vajb quits (~Vajb@hag-jnsbng11-58c3a1-224.dhcp.inet.fi) (Remote host closed the connection)
2021-07-21 22:34:41 <ph88^> maerwald, ^ ?
2021-07-21 22:35:09 <sm> what's your platform ph88^ ?
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2021-07-21 22:35:28 <ph88^> for building the docker image ? ubuntu 20.04 inside of virtualbox
2021-07-21 22:35:30 × MQ-17J quits (~MQ-17J@d14-69-206-129.try.wideopenwest.com) (Ping timeout: 265 seconds)
2021-07-21 22:35:47 <zangi> sm: what if f in `nest n f x` has type `Monad m => a -> m a`
2021-07-21 22:35:59 <sm> what does `arch` say ?
2021-07-21 22:36:31 <sm> seems odd that there wouldn't be a ghc 8.10 binary. Is your stack up to date ?
2021-07-21 22:37:00 <sm> maybe it's confused by this -ncurses6 suffix
2021-07-21 22:37:55 <maerwald[m]> ph88^: I've never used stack --docker
2021-07-21 22:38:03 <ph88^> sm arch run where ? Maybe you missed that i'm building from a docker container ?
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2021-07-21 22:38:32 <ph88^> maerwald[m], what would you do ? download your project code and do the build with Dockerfile commands ?
2021-07-21 22:38:34 <sm> ph88^: wherever you're running that stack command, run `arch` ?
2021-07-21 22:38:50 <ph88^> sm x86_64
2021-07-21 22:38:56 <maerwald[m]> ph88^: yeah
2021-07-21 22:39:36 <maerwald[m]> I've done that before. It works.
2021-07-21 22:40:38 <maerwald[m]> ph88^: also, you need to adjust PATH
2021-07-21 22:41:04 × Tuplanolla quits (~Tuplanoll@91-159-68-239.elisa-laajakaista.fi) (Quit: Leaving.)
2021-07-21 22:41:28 <ph88^> maybe because i never ran this command, thus no system ghc was found inside docker container ? https://gist.github.com/hasufell/f0893abfbba63ac4ea40feb0520946ee#file-dockerfile-L10
2021-07-21 22:41:57 <ph88^> maerwald[m], how to adjust path ?
2021-07-21 22:42:20 <ph88^> i'm not sure between the difference of ghcup set ghc and these commands here https://github.com/haskell-works/cabal-cache/blob/66252484c7d0dbcb79b082ac95cb83213cdc892f/.circleci/config.yml#L71-L73
2021-07-21 22:42:35 × Matthias1 quits (~Matthias1@cpe-76-170-236-166.socal.res.rr.com) (Remote host closed the connection)
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2021-07-21 22:43:57 <ph88^> building the container with ghcup seems to have gone well btw https://bpa.st/L3MA
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