[Property wrappers] Allow default initialization to infer a type. #30663
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Property wrappers are allowed to infer the type of a variable, but this
only worked when the property wrapper was provided with an explicit
initialization, e.g.,
@WrapsAnInt() var x // infers type Int from WrapsAnInt.wrappedValue
However, when default initialization is supported by the property wrapper,
dropping the parentheses would produce an error about the missing type
annotation
@WrapsAnInt var x
Make this second case behave like the first, so that default initialization
works consistently with the explicitly-specified version.
Fixes rdar://problem/59471019.
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@swift-ci please smoke test |
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@swift-ci please test source compatibility |
hborla
approved these changes
Mar 26, 2020
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The Release source compatibility build failed with: |
…ropriate wrappedValue is the new name, and we only support initialValue for backward compatibility with earlier revisions of the property wrappers proposal.
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Let's see if the source compat bots are in a better shape now. @swift-ci please test source compatibility |
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@swift-ci please smoke test |
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Source compatibility bots were fine; I've pulled in the cleanup @hborla suggested and will land with that. |
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@swift-ci please smoke test |
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Property wrappers are allowed to infer the type of a variable, but this
only worked when the property wrapper was provided with an explicit
initialization, e.g.,
However, when default initialization is supported by the property wrapper,
dropping the parentheses would produce an error about the missing type
annotation
Make this second case behave like the first, so that default initialization
works consistently with the explicitly-specified version.
Fixes rdar://problem/59471019.