Gain insights into the C++ keyword 'const,' its usage in various contexts, and implications when returning pointers and references. Learn about preventing accidental data changes.

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In this course, you will learn about the C++ keyword const and its behaviour under different usage conditions, including local, global and static contexts. This course will help you to understand const and its implications when you attempt to return pointers and references in C++. By the end of the course, you will have a solid grip on const and its usage in preventing any accidental change of data.

Secure Coding Practices in C++: A Deep Dive into const

What could be one reason to use a `const` member variable?


What could be one reason to use a <code>const</code> member variable?

Which special function cannot be generated when we introduce a const member?


Which special function cannot be generated when we introduce a const member?

What is the main reason not to use `const_cast` to change `const` members?

What is the main reason not to use <code>const_cast</code> to change <code>const</code> members?

Make as many methods `const` as possible.


What are the different ways to communicate that a member should not change?


What are the different ways to communicate that a member should not change?

Explicitly delete the specific functions that can’t be generated.

What should we do if we still decide to use `const` members?


What should we do if we still decide to use <code>const</code> members?

Here's a short quiz to test your understanding.

Introduction

Arguments using const

Local Variables

Local Members

Functions

Return Types

const Parameters

const and Smart Pointers

Rvalue References

Summary

Quiz