May 2014
Beginner
960 pages
26h 46m
English
Content preview from Ivor Horton's Beginning Visual C++ 2013
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Chapter 8More on Classes
- What a destructor is and when and why you need to define it
- How to implement a destructor
- How to create class data members in the free store and how to delete them
- When you must write a copy constructor for a class
- How to make class objects work with operators such as + or *
- How to use rvalue reference parameters to avoid unnecessary copying of class objects
- What class templates are and how you define and use them
- What template specializations are and how they are defined
- What perfect forwarding is and how you can achieve it
- How to use the standard
stringclass for string operations
You can find the wrox.com code downloads for this chapter on the Download Code tab at www.wrox.com/go/beginningvisualc. The code is in the Chapter 8 download and individually named according to the names throughout the chapter.
CLASS DESTRUCTORS
Although this section heading relates to destructors, it’s also about dynamic memory allocation. When you allocate memory in the free store for class members, you are usually obliged to make use of a destructor, in addition to a constructor, of course. As you’ll see, dynamically allocating memory for class members will also require you to write a copy constructor.
What Is a Destructor?
A destructor is a function that destroys objects when they are no longer required or when they go out of scope. The class destructor is called automatically when an ...
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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.
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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.