In an iOS app written in Swift, how does ARC manage the lifetime of a class instance?
Each instance carries a strong reference count; the compiler inserts a retain when you assign or pass it and a release when it leaves scope or you assign nil, so the moment the count hits zero deinit runs and the memory is returned. weak and unowned don't raise this count.
Memory and ARCShort answerAdvanced
Starting from "explain ARC," the follow-ups keep coming. First: who inserts retain and…
#arc #ownership
Memory and ARCShort answerAdvanced
From the moment an object's last strong reference goes away until the memory is actually…
#arc #deinit
Memory and ARCShort answerIntro
What is ARC, and why do we need it?
#arc
Memory and ARCShort answerBasics
A view controller doesn't seem to leave memory after you close its screen. How would you…
#deinit