If the error message really comes from the line you've shown, then $self->{ObjA_ref} is an instance of MyClass and not of ClassA. So your error lies somewhere else, or you haven't shown us the real code. Data::Dumper on $self can be helpful here.

It helps us to help you better if you show self-contained code that exhibits the problem and is directly runnable by us, so we can easily replicate your problem.

In reply to Re: classes that use composition by Corion
in thread classes that use composition by 7stud

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