Objective-C Automatic Reference Counting (ARC)¶ About this document¶ Purpose¶ The first and primary purpose of this document is to serve as a complete technical specification of Automatic Reference Counting. Given a core Objective-C compiler and runtime, it should be possible to write a compiler and runtime which implements these new semantics. The secondary purpose is to act as a rationale for wh
Swift contains protocols in which you can declare methods, which something claiming to adhere to the protocol must implement. One thing Swift protocols can’t do are optional methods... sort of. In Objective-C we’d specify an optional method in a protocol like so @protocol MyProtcol<NSObject> -(void)someRequiredMethod:(id)param; @optional -(void)someOptionalMethod:(id)param; @end In Swift you can p
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