December 1998
Intermediate to advanced
624 pages
13h 8m
English
Content preview from C++ FAQs, Second Edition
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Chapter 37. Private and Protected Inheritance
FAQ 37.01 What are private inheritance and protected inheritance?
Has-a, not is-a. From the user's perspective, private and protected inheritance are semantically similar to composition, but they are very different from normal public inheritance. Thus private and protected inheritance are a lot more like “has-a” than “is-a” (more precisely, than “is-substitutable-for”). Here are the ways they are like “has-a”.
Like normal composition, private and protected inheritance cause an inner object to be contained inside the outer object. With normal composition, this inner object is called a member object. The syntax for doing this with private inheritance is different than the syntax for normal composition, ...
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