July 2013
Intermediate to advanced
144 pages
4h 50m
English
book
Object-Oriented Computation in C++ and Java: A Practical Guide to Design Patterns for Object-Oriented Computing
by Conrad Weisert
Content preview from Object-Oriented Computation in C++ and Java: A Practical Guide to Design Patterns for Object-Oriented Computing
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7. Role of Inheritance and Polymorphism with Numeric Types
7.1. Review of example classes
Consider the following numeric types from earlier chapters:
• Complex
• Rational
• Money
• Mass
• Days
• Date
• Voltage
• Current
• Resistance
• Power
Which ones lend themselves to specialization, that is, to being used as a base class for one or more specialized derived types?
The surprising—and to some, disappointing—answer is that none of them do. Even though some aspects of object orientation are well suited to elementary data types, inheritance and polymorphism are less useful with elementary objects than with composite or container objects.
7.2. Representation is not specialization
Suppose someone proposes this inheritance hierarchy:
Or this: ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.