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If you have Class A with an instance var ‘foo’ which has a @property/@synthesize directive, and Class B inherits from Class A, does it also need to @property/@synthesize ‘foo’? The reason I ask is because when I try to use Class B’s ‘foo’, the calling class says that ‘foo’ is not something of a structured union or a member, which makes me believe it needs to be explicitly synthesized.
No, you don’t. Synthesized properties are added to class A and its subclasses automatically.