NSCoder is an abstractClass which represents a stream of data. They are used in Archiving and Unarchiving objects. NSCoder objects are usually used in a method that is being implemented so that the class conforms to the protocol. (which has something like encodeObject and decodeObject methods in them).
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In the context of an NSOperation object, which runs in an NSOperationQueue, the terms concurrent and non-concurrent do not necessarily refe...
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This borrows very much from C/C++. It allows you to alias a type, which can be useful in many particular contexts. typealias AudioSample ...
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To provide a default value for a variable. let missingName : String? = nil let realName : String? = “John Doe" let existentName :...