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Message:

Composition and return values

Posted by Alex Pushkin on 03 Nov 1998, 2:35 AM

Hi all,

Just read Bill's "Composition versus Inheritance" and I felt
that it was very valuable. One thing though, composition is
indeed more appropriate combined with "delegation" only if the
method call that is forwarded has a return value. This is
probably another topic, but when should a method have return
values? Any rule of thumb for that?
How OO is the use of return values?

cheers,
Alex.