objective-c: double pointers to property not allowed?

Question

I want to create a method like this:

- (void) checkAndUpdateStringProperty: (NSString **) property{
   if (...) 
      *property = @\"whatever\";
}
         


        

Answer 1

If you are really careful about the ownership attributes, you can get around this issue by staring at the following:

[self property]

vs:

self.property

vs:

self->property

Once you are clear about the difference you can try this:

[self checkAndUpdateStringProperty: &self->productName]

Note the use of: ->

I use this all the time when the property attribute is assign and when it is a primitive, non object type: (float, int, ...)