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A comment on What's new in Swift 3.1. Parent comment

Re:What's new in Swift 3.1 by mikeash on Thursday January 26, 2017 @12:22PM (#13493221)
Concrete constrained extensions and nested generics are great. These were pretty big holes in the previous versions, and will help simplify a bunch of real code.
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Re:What's new in Swift 3.1 by adamnemecek on Thursday January 26, 2017 @12:26PM (#13493260)
My exact thoughts. These were like 30% of the things I was looking forward to in Swift 4 so the fact that I don't have to wait is nice.
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