C++ Concepts: Improve Type Safety with C++ 20/

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Requirements on Return Types

Requirements on Return Types

Get an overview of the requirements on the return types.

We'll cover the following...

We’ve seen how to write a requirement expressing that certain functions must exist in a class API.

Constrain the return type

But did we constrain the return type of those functions?

template <typename T>
concept HasSquare =
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