How to use const in C++
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How to use const in C++

On the virtues of constness

About the Book

Constness is such an important idea that in certain languages entities are const, in other words, immutable by default. If you want to become a seasoned C++ developer, you must understand how you can use const correctly. In this book, you'll learn when and how to use it in the different contexts it might appear:

  • const functions
  • const local variables
  • const member variables
  • const return types
  • const parameters

About the Author

Sandor Dargo
Sandor Dargo

I am a C++ software craftsman with strong Python working in the tourism and hospitality industry and an enthusiastic blogger writing about coding, books, and the importance of stoic philosophy in a software developer's life.

I moved to software development from database operations which means that I don't just care about delivering a product as fast as possible, but I do understand the importance of stability and maintainability.

I'm passionate about delivering clean solutions, but I find even more important to help my teams to constantly raise the bar and to (re)focus on quality and clean code. I do this by explaining how high-quality work will help them in their individual careers, by introducing more meaningful development processes and automation and by teaching them industry best practices. 

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$4.99
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How to use const in C++ - Team Edition (5 copies)

There is a team package deal! Buy for your whole team to get a better price!

  • PDF

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Bundles that include this book

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Reader Testimonials

Rick Audet
Rick Audet

Senior Engineer, Dolby Laboratories

Finished this fun read the other day and filled in a number of gaps in my knowledge of const usage. Recommended.

Table of Contents

  • Introduction
  • Arguments against using const
    • const and visual noise
    • const is confusing for the developer
    • It doesn’t matter anyway
  • const local variables
  • const member variables
    • Why would you want to have const members?
    • Some unexpected implications
    • Can we find a workaround?
  • const functions
    • Characteristics of const functions
    • const overloads
  • const return types
    • Returning const objects by value
    • Returning const references
    • Return const pointers
  • const parameters
    • const primitve data type parameters
    • const class type parameters
  • const and smart pointers
    • const and smart pointers as pointers
    • const and smart pointers as objects
  • const rvalue references
    • What are rvalue references?
    • Binding rules
    • When to use const rvalue references?
  • Summary

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