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Learning Qlik Sense: The Official Guide

You're reading from   Learning Qlik Sense: The Official Guide Get to grips with the vision of Qlik Sense for next generation business intelligence and data discovery

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Product type Paperback
Published in Feb 2015
Publisher
ISBN-13 9781782173359
Length 230 pages
Edition 1st Edition
Languages
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Toc

Table of Contents (14) Chapters Close

Preface 1. Coding with C++ FREE CHAPTER 2. Variables and Memory 3. If, Else, and Switch 4. Looping 5. Functions and Macros 6. Objects, Classes, and Inheritance 7. Dynamic Memory Allocation 8. Actors and Pawns 9. Templates and Commonly Used Containers 10. Inventory System and Pickup Items 11. Monsters 12. Spell Book Index

Getters and setters

You might have noticed that once we slap private onto the Player class definition, we can no longer read or write the name of the player from outside the Player class.

If we try and read the name with the following code:

Player me;
cout << me.name << endl;

Or write to the name, as follows:

me.name = "William";

Using the struct Player definition with private members, we will get the following error:

main.cpp(24) : error C2248: 'Player::name' : cannot access private member declared in class 'Player'

This is just what we asked for when we labeled the name field private. We made it completely inaccessible outside the Player class.

Getters

A getter (also known as an accessor function) is used to pass back copies of internal data members to the caller. To read the player's name, we'd deck out the Player class with a member function specifically to retrieve a copy of that private data member:

class Player
{
private:
  string name;...
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