Dmitri Hrybenko 0ef360228b stdlib: constrain CollectionType.SubSlice to _CollectionDefaultsType ...

The language has limitations that don't allow us to express the API we
actually want, and we have to resort to underscored protocols again.

<rdar://problem/20715009> Implement recursive protocol constraints

<rdar://problem/20477576> 'where' constraints on associated types in
protocols

Swift SVN r27820

2015-04-27 21:50:19 +00:00

986 B

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