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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

Documenting how a utility function is supposed to work

Preventing unintended and erroneous usage utility templates

Improving error messages for some unintended calls

Improving run-time performance of the functions

**(Select all that apply)** While some claim that concepts are for libraries, they can also be useful for application developers. What are the advantages of defining requirements on utility templates?

(Select all that apply) While some claim that concepts are for libraries, they can also be useful for application developers. What are the advantages of defining requirements on utility templates?

**(Select all that apply)** Which types satisfy the concept `std::integral`?

(Select all that apply) Which types satisfy the concept <code>std::integral</code>?

They don’t document the required types.

They only use `T` as a template parameter type instead of a descriptive name.


What are the typical problems with utility function templates?


What are the typical problems with utility function templates?

It's not possible to have different template overloads for a destructor.

**(Select all that apply)** How can you provide multiple destructors in a class template in C++20?

(Select all that apply) How can you provide multiple destructors in a class template in C++20?

To turn non-RAII classes into RAII classes


What is a possible reason to have different destructors for a template class based on type characteristics?

What is a possible reason to have different destructors for a template class based on type characteristics?

Let’s test our understanding of C++ concepts in real life.

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

Quiz: C++ Concepts in Real Life