Lecture 3 - Page 28 : 36

Notes about C++ Abstraction Mechanisms, Part 1 From C# classes to C++ classes Organization of classes and members Classes, structs and namespaces Functions outside classes Constructors Constructors - initialization versus assignment More about constructors Use of constructors Destructors A class that needs a destructor Resource acquisition is initialization - RAII Auto Pointers Object copying Copying Point objects in parameter passing Example of copying objects: Default copying Example of copying objects: Programmed copying Preventing object copying Classes and Conversion Implicit Conversion Classes and Conversion: Examples Static class members Const member functions Const member functions - const and mutable Object Self-reference Inline member functions Concrete classes Visibility and Access Control Friends Friends - Example 1 Friends - Example 2 Friends - class Point - notational convenience Friends - Class Point - operator friends Friends - Class Point - implicit conversion Discussion - Encapsulation, Visibility and Access Operator overloading Example: Operator overloading in class Point

In some cases it is convenient define a function as a friend instead as a member. Because a friend is activated in another way than a member: f(x,y) versus x.f(y).