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by chris_7
3685 days ago
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The Foundation libraries provide that functionality, they're not core to the concept of a programming language, so they're not part of the minimal standard library. There are also numerous community provided implementations. One way that Swift's type system is more advanced than Java is the ability to define extensions to protocols (interfaces) constrained to specific types, i.e. you can add "average" to "SequenceType where Generator.Element == Double". You can also use this to provide default implementations for protocols, but only in the case of specific associated types. |
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