What is the difference between copies & retain in iOS operating system?
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Answer Posted / Satyendra Singh
In Objective-C, 'retain' increases the reference count of an object by 1 (meaning that the object is not deallocated as long as the reference count is greater than zero). On the other hand, 'copy' creates a new instance of the object and transfers ownership to the caller. Retain just retains the existing object.
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