Doug Gregor 5aea1315cd Add @_disfavoredOverload attribute to affect overload resolution. ...

Introduce an attribute @_disfavoredOverload that can be used to state
that a particular declaration should be avoided if there is a
successful type-check for a non-@_disfavoredOverload. It's a way to
nudge overload resolution away from particular solutions.

2019-05-14 23:07:26 -07:00

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