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[AnyHashable] Eliminate the _AnyHashableProtocol hack. #5132

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[AnyHashable] Eliminate the _AnyHashableProtocol hack. #5132

wants to merge 1 commit into from

Commits on Oct 5, 2016

  1. [AnyHashable] Eliminate the _AnyHashableProtocol hack. 

    Now that we have the ability to write extensions where one of the type
parameters is equivalent to a concrete type, eliminate
_AnyHashableProtocol and provide AnyHashable-specific behavior for
Dictionary (where Key == AnyHashable) and Set (where Element ==
AnyHashable) rather than employing the "Key: _AnyHashableProtocol"
hack.

Fixes standard library ABI FIXME's swiftlang#35, swiftlang#37, swiftlang#39.
    @DougGregor
    DougGregor committed Oct 5, 2016
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