Login | Register   
RSS Feed
Download our iPhone app
Browse DevX
Sign up for e-mail newsletters from DevX

By submitting your information, you agree that devx.com may send you DevX offers via email, phone and text message, as well as email offers about other products and services that DevX believes may be of interest to you. DevX will process your information in accordance with the Quinstreet Privacy Policy.

Tip of the Day
Home » Tip Bank » C++
Language: C++
Expertise: Intermediate
Sep 10, 2001



Application Security Testing: An Integral Part of DevOps

C++ Smart Pointers

C++ smart pointers are the idea of using a selector to access a class. This gives the class writer an option to control access to class members and function. For example, if you wanted to count references to the object and autodelete it when the count goes to zero. Here's a simple example:
class CA {
        void func() { // ... }

This will be a smart pointer to the CA class:
class CPtrA {
        CPtrA() : m_pA(new CA) { }
        ~CPtrA()  { delete m_pA; }
        CA* operator->() { return m_pA; }
        CA* m_pA;

Using the smart pointer:
        CPtrA pA;

Overloading operator= will give you an option to count references. You'll know about each pA = pOtherA by the user, and will be able to take the appropriate action.

C++ COM and CORBA rely heavily on smart pointers. The Standard Template Library also has an auto_ptr template, for your convenience.
Igal Ioffe
Comment and Contribute






(Maximum characters: 1200). You have 1200 characters left.



Thanks for your registration, follow us on our social networks to keep up-to-date