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The All-in-One Guide to C++20

Concluding Concepts

Explore how C++20 concepts enhance template programming by enforcing semantic constraints on type parameters. Learn to use concepts for better type safety, clearer compilation errors, and easier template definitions. This lesson clarifies the evolutionary and revolutionary aspects of concepts, helping you write more expressive and maintainable generic code.

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🔑 Concepts in C++20: an evolution or a revolution?

This small detour expresses my opinion. First, I present the facts, then I draw my conclusion. The facts are based on what has been presented in this chapter. So which arguments speak for evolution or for revolution?

Evolution

  • Concepts promote working with generic code at a higher level of abstraction.
  • Concepts give you understandable error messages when compiling a template fails. They provide nothing you could not achieve with the type-traits library, SFINAE, and st
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