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clang-gcc.tar.gz

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

## `!a` is not the opposite of `a`

When we talk about concepts, the opposite of a `true` expression is not an expression that is evaluated to `false`. Let’s suppose we have a function foo() that takes two parameters, `T bar` and `U baz`. We have some constraints on them. One of them must have a nested type `Blah` that is `unsigned`.


# `!a` is not the opposite of `a`

When we talk about concepts, the opposite of a `true` expression is not an expression that is evaluated to `false`. Let’s suppose we have a function foo() that takes two parameters, `T bar` and `U baz`. We have some constraints on them. One of them must have a nested type `Blah` that is `unsigned`.


Get an overview of how negation works with concepts.

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

Negations Using Concepts

`!a` is not the opposite of `a`