Question

This code:

__weak VeryCool *weakSelf = self;
something.changeHandler = ^(NSUInteger newIndex) {
    if (newIndex == 0) {
        [weakSelf.options removeObjectForKey:@"seller"];
    }
};

gives me a warning that property options was not found. That’s true, because options is an ivar, but not declared as property. Is it possible to somehow get options from weakSelf without declaring it as property?

Answer 1

For direct ivar access, use ->. For example:

__weak VeryCool *weakSelf = self;
something.changeHandler = ^(NSUInteger newIndex) {
    if (newIndex == 0) {
        VeryCool* strongSelf = weakSelf;
        if (strongSelf)
            [strongSelf->options removeObjectForKey:@"seller"];
    }
};

It’s important to check that strongSelf is non-nil because direct access to an instance variable will crash for a nil pointer (which is different from invoking methods with a nil receiver and property access is just method invocation).