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c++20

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This course will walk you through the newest version of C++ 20, C++ Concepts.

You will go through one of the most significant new features in C++20, which is Concepts. Concepts allow you to create compiler-checked criteria for template parameters, revolutionizing the way you think about and develop generic code. You can use them to provide both syntactic and semantic requirements. They also allow you to explicitly express your goal in the type system. If something goes wrong, you'll get a clear error message from the compiler.

While useful, Concepts can be difficult to apply and even confusing sometimes. This course provides you with the knowledge you need to overcome these obstacles and move on to more complex topics.

Let's get started.

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

## Recap
So far in this course, we’ve seen what concepts are and why they were introduced in C++20. We’ve also discussed how concepts can be used with functions, classes, and templates. We’ve explored what concepts are shipped with the standard library as well as how to write our own. In the previous chapter, we saw how to use constraints with various types of concepts. 

## Using Numbers

We’ve been playing with a concept called `Number` throughout the entire course. Let’s go over a quick reminder why:

# Recap
So far in this course, we’ve seen what concepts are and why they were introduced in C++20. We’ve also discussed how concepts can be used with functions, classes, and templates. We’ve explored what concepts are shipped with the standard library as well as how to write our own. In the previous chapter, we saw how to use constraints with various types of concepts. 

# Using Numbers

We’ve been playing with a concept called `Number` throughout the entire course. Let’s go over a quick reminder why:

Let’s see a couple of real-world examples and areas where concepts are applicable.



Use Cases for Numbers

Let’s see a couple of real-world examples and areas where concepts are applicable.

Introduction

The Concept Behind C++ Concepts

Four Ways to use Concepts in Functions

C++ Concepts with Classes

Concepts Shipped with the C++ Standard Library

How to Write Your Own C++ Concepts

How to Use C++ Concepts in Real Life

Summary

Use Cases for Numbers

Recap

Using Numbers