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
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
4. Defining a Numeric Type Having an Additive Unit of Measure
4.1. Unit of measure in modeling real-world data
4.1.1. Not like pure number classes
The examples we looked at in Chapter 3, such as Fraction and Complex (despite its name), are simple because they’re closed under all four arithmetic operations. Whenever x and y are Complex objects, then x+y, x-y, x*y, and x/y are also Complex objects (except for division by zero). We didn’t have to think about which arithmetic operators to implement and what their results should be.
Most numeric data in the real world, however, have some unit of measure. An amount of money may be measured in dollars, a distance in meters, and a temperature in degrees Kelvin. Such data are rarely closed under all ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.