Back to Item 10: Write operator delete if you write operator new.
Continue to Item 11: Declare a copy constructor and an assignment operator for classes with dynamically allocated memory.

Constructors, Destructors, and Assignment Operators

Almost every class you write will have one or more constructors, a destructor, and an assignment operator. Little wonder. These are your bread-and-butter functions, the ones that control the fundamental operations of bringing a new object into existence and making sure it's initialized; getting rid of an object and making sure it's been properly cleaned up; and giving an object a new value. Making mistakes in these functions will lead to far-reaching and distinctly unpleasant repercussions throughout your classes, so it's vital that you get them right. In this section, I offer guidance on putting together the functions that comprise the backbone of well-formed classes.
Back to Item 10: Write operator delete if you write operator new.
Continue to Item 11: Declare a copy constructor and an assignment operator for classes with dynamically allocated memory.