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std::unsigned_integral(3)     C++ Standard Libary    std::unsigned_integral(3)

NAME
       std::unsigned_integral -	std::unsigned_integral

Synopsis
	  Defined in header <concepts>
	  template < class T >
	  concept	unsigned_integral      =      std::integral<T>	    &&
       (since C++20)
	  !std::signed_integral<T>;

	  The concept unsigned_integral<T> is satisfied	if and only if T is an
       integral	type
	  and std::is_signed_v<T> is false.

Notes
	  unsigned_integral<T> may be satisfied	by a type that is not  an  un-
       signed integer
	  type,	for example, bool.

See also
	  is_integral checks if	a type is an integral type
	  (C++11)     (class template)
	  is_signed   checks if	a type is a signed arithmetic type
	  (C++11)     (class template)

http://cppreference.com		  2022.07.31	     std::unsigned_integral(3)

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