Can function parameters be specified to accept eit...
# getting-startedm
MarkRS
03/31/2023, 4:09 PMCan function parameters be specified to accept either of two types?
My use case is functions accepting either a ResourceStringDesc or ResourceFormattedStringDesc (from Moko Resources).
MarkRS
03/31/2023, 4:16 PMThanks for that.
Writing different types is a pain in this situation, I'm passing errors up a chain of calling, so there are several "double function" definitions required, which is very tedious. 😞
MarkRS
03/31/2023, 4:26 PMYes, fully under my control. Ok, I'll have to look up sealed classes
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Wout Werkman
03/31/2023, 4:27 PMJFYI, you might want to vote for https://youtrack.jetbrains.com/issue/KT-13108/Denotable-union-and-intersection-types
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MarkRS
03/31/2023, 4:44 PMTrying to, but it looks like a YouTrack account is different from a JetBrains account, or at least my JB account details don't let me log in to YouTrack. 😞
MarkRS
03/31/2023, 4:51 PMThe "double function" solution is also really annoying when both functions are exactly the same except for the parameter type.
Both ResourceStringDesc and ResourceFormattedStringDesc use the same name method to produce a string. 🤔😞
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Wout Werkman
03/31/2023, 4:52 PMThey sound like they are really good candidates to be expressed as a sealed type 🙂
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MarkRS
03/31/2023, 4:54 PMFalls foul of the "single module" restriction I think. I'm not clear what "indirect sealed types" are, which seem to make that restriction go away.
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sciack
03/31/2023, 4:59 PMWhy not use an interface?
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MarkRS
03/31/2023, 5:00 PMI'm not sure how that would help @sciack. I still have to have double definitions in the interface, don't I?
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