Objective-C creating object first then assign to property

Question

Sorry if the title is confused but I can't find a way to express my question.

I see many Objective-C example codes and they usually use this:

    Clazz *clazz = [[Clazz alloc] init];
    self.clazz = clazz;

instead of:

    self.clazz = [[Clazz alloc] init];

Does the first approach have any advantage over the second one?

Answer 1

There's no advantage if that's all it does. If the code uses clazz further, then accessing a local variable saves the nanoseconds required to call the self.clazz getter, and avoids the getter entirely which could matter if the getter does anything weird.