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As LLVM compiler with ARC option add retain, copy,release and autorelease for us automatically, but how does ARC determine whether to use retain or copy?
Thanks in advance:)
ARC doesn’t add
copy, that’s still your responsibility if you need copies. It only managesretainandreleasefor you. If you manuallycopysomething though it knows that you get a new object that it will have to release at some time.