What is the underlying mechanism for ivar synthesis in the modern Objective C runtime

Question

One of the features of the modern (64 bit OS X and iPhone OS) Objective C runtime is the ability for properties to dynamically synthesize ivars without explicitly declaring

Answer 1

What you are looking for is @synthesized name, like:

@synthesize name = _name;

...

- (NSString *) name {
    if (!name) {
        _name = @"Louis";
    }

    return _name;
}