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All LessonsFree Lessons (4)

Introduction

Getting Started Why C++ Concepts?

The Concept Behind C++ Concepts

Use of Concepts Motivation Behind C++ Concepts Templates in C++Quiz on C++ Templates Highlights

Four Ways to use Concepts in Functions

The Four Ways to Use Concepts

The <requires> Clause

Challenge - GCD of Two Integers Using the <requires> Clause

Solution: GCD of Two Integers Using the <requires> Clause

The Trailing <requires> Clause

Challenge: GCD of Two Real Numbers Using the Trailing <requires>

Solution: GCD of Two Real Numbers Using the Trailing <requires> c

The Constrained Template Parameter

The abbreviated Function Templates

Concepts at Compile-time

How to Choose Among the Four Ways?

Quiz on the Ways to Use the C++ Concepts

C++ Concepts with Classes

Introduction The Requires Clause Challenge: Implement a Pair Class Using Requires Clause Solution: Implement KeyPair Class Using <requires> Clause Constrained Template Parameters Challenge: Array Class Using Constrained Template Parameters Solution: Array Class Using Constrained Template Parameters The Trailing Requires Clause Quiz on C++ Concepts with Classes Key Takeaways

Concepts Shipped with the C++ Standard Library

Concepts in the <concepts> Header - I Concepts in the <concepts> Header (cont.)Concepts in the <iterator> Header Concepts in the <ranges> Header Quiz on the Concepts Shipped with C++ Standard Library Challenge: A Custom Concept Using Concepts from the C++ STL Solution: A Custom Concept Using Concepts from the C++ STL Conclusion

How to Write Your Own C++ Concepts

Negations Using Concepts

Subsumption and Negations

Challenge: Fix the Code

Solution: Fix the Error in the Code

Requirements on Operations

Simple Requirements on the Interface

Full Example of Interface

Requirements on Return Types

Challenge: Concept for a Container

Solution: Concept for a Container

Type Requirements - Require the Existence of a Nested Type

A Class Template Specialization

An Alias Template Specialization

Challenge: Concept for a Container

Solution: Concept for a Container

Nested Requirements

Challenge: Concept for a Container

Solution: Concept for a Container

Quiz: Write Our Own C++ Concepts

How to Use C++ Concepts in Real Life

Use Cases for Numbers Utility Functions Constrained Multiple Destructors with C++ Concepts Multiple Destructors with C++20 Challenge: Container Class with Multiple Destructors Solution: Container Class with Multiple Destructors Quiz: C++ Concepts in Real Life Conclusion

Summary

C++ Concepts: Improve Type Safety with C++ 20/

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Conclusion

Conclusion

Get an overview of the major points discussed in this chapter.

We'll cover the following...

In this chapter, we discussed in detail how to write our own concepts:

We started by combining already existing concepts such as

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