Gain insights into C++20 Concepts to enhance type safety. Delve into creating compiler-checked criteria for templates and improving error clarity for seamless generic code development.

C++ Concepts by Sándor Dargo_468 x 60 copy.png

clang-gcc.tar.gz

c++20

clang

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

## Problem
Implement the destructor of a partially written class `Container` that has two data members: an array `t` of template type `T`, and its length given by `size`. As we can see, in the constructor, `t`, is being initialized with dynamic memory, so it should be deallocated in the destructor. 

The task is to implement the multiple destructors for `Container` class using `std::is_trivially_destructible_v`. 

We should print to the console “Trivial” or “Not trivial” inside the destructor based on the requirement. 

After you implement the destructors, uncomment the lines from the `main` function to see the output.

Try it yourself first. If you have trouble getting to the solution, you can always press the “Show Solution” button to see how the problem can be solved. We’ll go through the in-depth solution in the next lesson.

Good luck!

# Problem
Implement the destructor of a partially written class `Container` that has two data members: an array `t` of template type `T`, and its length given by `size`. As we can see, in the constructor, `t`, is being initialized with dynamic memory, so it should be deallocated in the destructor. 

The task is to implement the multiple destructors for `Container` class using `std::is_trivially_destructible_v`. 

We should print to the console “Trivial” or “Not trivial” inside the destructor based on the requirement. 

After you implement the destructors, uncomment the lines from the `main` function to see the output.

Try it yourself first. If you have trouble getting to the solution, you can always press the “Show Solution” button to see how the problem can be solved. We’ll go through the in-depth solution in the next lesson.

Good luck!

Let’s try to implement the Container class with multiple destructors.

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

Challenge: Container Class with Multiple Destructors

Problem