Doug Gregor 86b59b1294 Add a score kind for value-to-optional bindings, and ban them during partial ordering. ...

This is the semantic change we need to eliminate ambiguities when
introducing the new ?? overload. There is a minor regression here with
curried method references, which is covered by <rdar://problem/18006008>.


Swift SVN r21173

2014-08-13 16:19:56 +00:00

146 KiB

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