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Concept of protocols in Objective-C

Protocols are another important feature provided by Objective-C language. Basically protocols are used for a particular situation according to the need of a program. Within protocol methods will be declared which are expected to be used for a par...

Protocol in Objective C

Hi , In this blog , we will learn how to use protocol in objective C.

Mandatory and optional methods in protocols

The methods and functions of the protocols can be categorized as, required or optional. The difference between these two specifiers is that, the programmer may or may not use the optional methods declared in the protocol, or may use some of them ...
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