Created
May 14, 2016 05:26
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条件を指定した protocol 継承手段はあるのか #CodePiece
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| protocol ProtocolA {} | |
| class A<T> {} | |
| class B {} | |
| class C {} | |
| extension A: ProtocolA where T: ClassB {} // extension of type 'A' with constraints cannot have an inheritance clause | |
| assert(A<B>() is ProtocolA) | |
| assert(!(A<C>() is ProtocolA)) |
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