_Weakly_unwrappable should use _Allow_inheriting_unwrap_v
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... so as not to require `_Prevent_inheriting_unwrap`. The intent of the unwrapping design is that `_Prevent_inheriting_unwrap` is optional.
Weakly_unwrappable should use _Allow_inheriting_unwrap_v
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I'm happy either way, although slight preference for |
StephanTLavavej
approved these changes
Mar 13, 2023
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I prefer the typedef to be optional, as this asks user-defined iterators to do less work. Inheriting from an iterator is squirrely and most code doesn't need to worry about that scenario. |
barcharcraz
approved these changes
Mar 14, 2023
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barcharcraz
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I kinda like it being optional, as well.
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I'm mirroring this to the MSVC-internal repo - please notify me if any further changes are pushed. |
Weakly_unwrappable should use _Allow_inheriting_unwrap_v_Weakly_unwrappable should use _Allow_inheriting_unwrap_v
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Thanks for fixing this bug! 🐞 🐈⬛ 😻 |
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... so as not to require
_Prevent_inheriting_unwrap; the intent of the unwrapping design is that_Prevent_inheriting_unwrapis optional.I'm willing to be convinced that
_Prevent_inheriting_unwrapshould be made mandatory, in which case we should still accept this change and also make changes to_Allow_inheriting_unwrap_vto maintain consistency between Ranges and non-Ranges unwrapping machinery.