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A comment on Introducing Swift. Parent comment

Re:Introducing Swift by nardi on Monday June 02, 2014 @04:19PM (#7836045)
> - Interface types with implicit adoption (Swift takes explicit protocols from ObjC)

Objective-C has informal protocols, and so does Swift.

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Re:Introducing Swift by curveship on Monday June 02, 2014 @06:14PM (#7836839)
Informal protocols and implicit interfaces are not the same thing. In particular, implicit interfaces are type checked statically at compile time, while informal protocols are checked dynamically at runtime.
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Re:Introducing Swift by tomlu on Monday June 02, 2014 @05:31PM (#7836563)
I'm assuming OP means structural typing, which Objective-C does not support.
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