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Upcasting generic collections #654

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madsmtm opened this issue Sep 19, 2024 · 0 comments
Open

Upcasting generic collections #654

madsmtm opened this issue Sep 19, 2024 · 0 comments
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A-framework Affects the framework crates and the translator for them enhancement New feature or request

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@madsmtm
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madsmtm commented Sep 19, 2024 •
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It'd be nice to have conversions to superclasses in collection types that use lightweight generics, i.e. some way to turn NSArray<NSView> into NSArray<NSResponder>, or even NSArray<NSObject>.

Note that this is only valid for __covariant immutable generic types, e.g. NSArray, but not NSMutableArray (see also this video from WWDC2015, timestamp around 23:40).

Related to #518 and might require a trait like in #271.
@madsmtm madsmtm added enhancement New feature or request A-framework Affects the framework crates and the translator for them labels Sep 19, 2024
@madsmtm madsmtm mentioned this issue Sep 19, 2024
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