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2021-03-13 15:01:16 RamZess parts (~osboxes@213.142.184.77) ()
2021-03-13 15:01:17 <absence> Philonous: thanks, guess i'll stick with freeze for now
2021-03-13 15:02:34 <loyon> oh dear, ormolu and servant typed apis don't go well together :-/
2021-03-13 15:02:58 × ddellacosta quits (~ddellacos@86.106.143.226) (Ping timeout: 245 seconds)
2021-03-13 15:04:41 <Mrbuck> any one here write haskell on windows?
2021-03-13 15:04:56 <absence> yes
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2021-03-13 15:09:19 <Mrbuck> absence: ok
2021-03-13 15:09:51 <timCF> Are there any shortcuts for `((f <$>) <$>)` or `((bimap f g) <$>)`? I found that I'm often using these boilerplate expressions with `m (Either a b)`
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2021-03-13 15:11:13 <Philonous> What workflow do people have to come up with version bounds for dependencies?
2021-03-13 15:11:37 <Philonous> Try to guess each one manually by looking at hackage?
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2021-03-13 15:11:52 berberman joins (~berberman@unaffiliated/berberman)
2021-03-13 15:11:56 <maerwald> just use ^>=
2021-03-13 15:12:08 <absence> timCF: if you wrap the "m (Either e a)" in ExceptT, you only need one fmap. unfortunately bimap doesn't work :/
2021-03-13 15:12:43 <absence> (but there's withExceptT for modifying the "e" value)
2021-03-13 15:13:14 × berberman_ quits (~berberman@unaffiliated/berberman) (Ping timeout: 264 seconds)
2021-03-13 15:13:58 <timCF> absence: yeah, this sounds reasonable. I was recommended many times to use `ExceptT`. Probably it's time to overcome fear of monad transformers and learn them)
2021-03-13 15:14:28 <Philonous> maerwald, I still need to know the version to match on
2021-03-13 15:14:39 notzmv joins (~zmv@unaffiliated/zmv)
2021-03-13 15:14:41 <maerwald> timCF: `Excepts` is cooler
2021-03-13 15:15:00 <maerwald> Philonous: start with the one in your build plan
2021-03-13 15:15:04 × jamm_ quits (~jamm@unaffiliated/jamm) (Remote host closed the connection)
2021-03-13 15:15:10 <absence> timCF: they can be intimidating and confusing for sure, but you'll run into them all the time, so it's worth learning
2021-03-13 15:15:34 <maerwald> timCF: https://hackage.haskell.org/package/haskus-utils-variant-3.0/docs/Haskus-Utils-Variant-Excepts.html
2021-03-13 15:15:54 <maerwald> ExceptT is boring... if I use it, I just go with String for the error type, because otherwise it's too annoying
2021-03-13 15:16:21 <maerwald> constant back and forth translation or an app-wide error type
2021-03-13 15:16:25 <maerwald> those are your options
2021-03-13 15:16:59 <timCF> maerwald: why String? Why not to create custom sum type to represent differnt errors?
2021-03-13 15:17:12 <maerwald> timCF: because then you have to translate back and forth
2021-03-13 15:18:10 <absence> maerwald: perhaps let him walk before running :) sounds like he's new to monad transformers
2021-03-13 15:18:46 <timCF> haha, that's true
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2021-03-13 16:27:13 <__minoru__shirae> maerwald: "constant back and forth translation or an app-wide error type"
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2021-03-13 16:28:17 <__minoru__shirae> how about wrapping?
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2021-03-13 16:29:09 <__minoru__shirae> you just wrap whatever error with your wrapper
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2021-03-13 16:37:51 <__minoru__shirae> if this were to work, you wouldn't even need a wrapper, because Either itself is a wrapper
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2021-03-13 16:39:19 <__minoru__shirae> some problem with types? Don't all errors inherit from some class or something?
2021-03-13 16:39:38 <monochrom> Huh, there is only one translation direction, and it's from your own error type to string, and it's only at the UI boundary.
2021-03-13 16:40:33 <monochrom> You will want your own custom type, preferrably and ADT, if you want catch-and-conditionally-rethrow.
2021-03-13 16:40:50 <monochrom> Because your condition will have to examine the content of the error.

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