Apple new programming language Swift language Advanced (15)--Protocol

Source: Internet
Author: User

A protocol defines a blueprint for the methods, attributes, and other requirements that are needed for a particular task or function.       The protocol itself does not provide an implementation of these requirements, it simply describes a blueprint for the implementation of a task or function. A protocol is similar to an interface definition in the Java language, which describes what an implementation can do, but does not itself contain any implementations.   Unlike interfaces, the swift language-defined protocol can be used by a class, structure, or enumeration to provide the actual implementation of the protocol requirements, while the Java language interface can only be implemented by the class. ...

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Apple new programming language Swift language Advanced (15)--Protocol

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