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3 Commits

Author SHA1 Message Date
Egor Zhdan
c167f4045b [cxx-interop] Conform std::optional to ExpressibleByNilLiteral 
This will allow passing `nil` as a parameter to a C++ function that takes a `std::optional<T>`.

rdar://114194600
 2023-08-21 19:21:40 +01:00
Egor Zhdan
7d7825591d [cxx-interop] Make std.optional.value nullable 
rdar://109356566 / resolves https://github.com/apple/swift/issues/65918
 2023-05-15 17:30:59 +01:00
Egor Zhdan
a12986ade4 [cxx-interop] Add CxxOptional protocol for std::optional ergonomics 
This adds a protocol to the C++ standard library overlay which will improve the ergonomics of `std::optional` when used from Swift code.

As of now, the overlay adds an initializer of `Swift.Optional` that takes an instance of `CxxOptional` as a parameter.
 2023-03-03 19:41:30 +01:00