IOS / iPhone ARC Memory Management

Question

__weak NSString *strin = [[NSString alloc] initWithFormat:@"hey"] ; NSLog(@"weak %@",strin); //returns weak (null) __weak NSString *strin =@ "hey"; NSLog(@"weak %@",strin); //returns weak hey 

What is the difference between both fragments. Why does the second return value when assigning a slide?

Answer 1

This is because @"hey" is a constant string literal that will be forever, while a weak link to the first (highlighted) line is not enough to save it.

Answer 2

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