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2020-11-13 02:22:31 conal joins (~conal@64.71.133.70)
2020-11-13 02:24:39 <bqv> unclechu: per my simple understanding, yes
2020-11-13 02:25:13 <unclechu> bqv: okay, thanks
2020-11-13 02:25:50 <unclechu> bqv: is there any chance you know whether it is supported in idris for instance?
2020-11-13 02:26:08 <bqv> No clue :p
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2020-11-13 02:41:53 × merijn quits (~merijn@83-160-49-249.ip.xs4all.nl) (Ping timeout: 260 seconds)
2020-11-13 02:45:28 <unclechu> to overcome this i added additional *promotable* type `data SBackend = SStdout | ...etc`
2020-11-13 02:46:05 <unclechu> and added a type class `class SBackendVal (α ∷ Operation) (β ∷ SBackend) where sBackendVal ∷ Proxy β → Backend α`
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2020-11-13 02:51:08 <MarcelineVQ> "<unclechu> bqv: is there any chance you know whether it is supported in idris for instance?" constraints on the actual "data ..." line or constraints on the data constructors that follow it? Could be more fruitful to say what/why you're wanting to do instead of whether it's possible
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2020-11-13 02:52:59 shatriff joins (~vitaliish@176.52.219.10)
2020-11-13 02:59:27 <MarcelineVQ> That being said though yes you can use gadts with constraints at the type level in idris
2020-11-13 02:59:55 Audentity joins (~Audentity@4e69b241.skybroadband.com)
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2020-11-13 03:00:03 <MarcelineVQ> Do you need that class or would a type family do the job you're after?
2020-11-13 03:02:28 × solonarv quits (~solonarv@astrasbourg-653-1-156-155.w90-6.abo.wanadoo.fr) (Ping timeout: 258 seconds)
2020-11-13 03:05:05 <unclechu> MarcelineVQ: less boilerplate for instance. more flexibility. in my case i had to add an another type which mostly just duplicates original type
2020-11-13 03:05:27 × g-belmonte quits (~g-belmont@2804:14c:8786:9312:3638:eaf5:dc36:146d) (Quit: Leaving)
2020-11-13 03:06:15 <unclechu> MarcelineVQ: type families do not exist in runtime. i was writing a type class in order to be able to make a runtime value from type-level value.
2020-11-13 03:06:34 <unclechu> just to shift it from type-level to runtime level in other words
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2020-11-13 04:42:02 <jakob_> Hey people, beginner question here: I want to look for a specific constructor in a list and i'm not sure whats the elegant way to do it. Here is what i came up with https://pastebin.com/e5QX1wpr Is there a nicer way to achieve what i want?

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