# std::Semiregular

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< cpp‎ | concepts

Defined in header `<concepts>` |  |
template <class T> concept Semiregular = std:: Copyable <T> && std:: DefaultConstructible <T>; |  | (since C++20)

The `Semiregular` concept specifies that a type is both copyable and default constructible. It is satisfied by types that behave similarly to built-in types like int, except that they need not support comparison with `==`.

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