iOS automatic @synthesize without creating an ivar

Question

If I have a @property which I didn\'t want to have backed via an ivar I simply omitted the @synthesize and had manual getters which re

Answer 1

If you mark the property as readonly and implement the getter yourself, it seems that iVar will not be created.

Interface declaration:

@property (nonatomic, readonly) BOOL myBoolProp;

Impementation:

- (BOOL)myBoolProp {
    return true;
}

Trying this:

- (void)viewDidLoad {
    [super viewDidLoad];
    _myBoolProp = true;
}

will generate an error: Use of undeclared identifier '_myBoolProp'

Removing the custom getter method also removes the error, appearing to demonstrate that the iVar has now been generated.