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Advantages of Concepts

Explore the advantages of using concepts in C++20 to write clearer and safer templates. This lesson helps you understand how concepts define template parameter requirements, unify function templates with regular functions, and improve compiler diagnostics. Gain insight into their history and practical use cases for function, class templates, and non-type template arguments.

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More generally, what are the advantages of concepts?

Advantages

  • Requirements for template parameters are part of the interface.

  • The overloading of functions and specialization of class templates can be based on concepts.

  • Concepts can be used for function templates, class templates, and generic member functions of classes or class templates.

  • You get improved error messages because the compiler compares the requirements of the template parameters with the given template arguments.

  • You can use predefined concepts or define your own. ...