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

NAME
       std::is_trivial - std::is_trivial

Synopsis
	  Defined in header <type_traits>
	  template< class T >		   (since C++11)
	  struct is_trivial;

	  std::is_trivial is a UnaryTypeTrait.

	  If  T	is a trivial type, provides the	member constant	value equal to
       true. For any
	  other	type, value is false.

	  If std::remove_all_extents_t<T> is an	incomplete type	and not	 (pos-
       sibly
	  cv-qualified)	void, the behavior is undefined.

	  If   the   program   adds  specializations  for  std::is_trivial  or
       std::is_trivial_v, the
	  behavior is undefined.

Template parameters
	  T - a	type to	check

	  Helper variable template

	  template< class T  >						(since
       C++17)
	  inline constexpr bool	is_trivial_v = is_trivial<T>::value;

       Inherited from std::integral_constant

Member constants
	  value	   true	if T is	a trivial type,	false otherwise
	  [static] (public static member constant)

Member functions
	  operator bool	converts the object to bool, returns value
			(public	member function)
	  operator()	returns	value
	  (C++14)	(public	member function)

Member types
	  Type	     Definition
	  value_type bool
	  type	     std::integral_constant<bool, value>

Example
       // Run this code

	#include <type_traits>

	struct A { int m; };
	static_assert(std::is_trivial_v<A> == true);

	struct B { B() {} };
	static_assert(std::is_trivial_v<B> == false);

	int main() {}

	  Defect reports

	  The following	behavior-changing defect reports were applied retroac-
       tively to
	  previously published C++ standards.

	     DR	   Applied to	    Behavior as	published	   Correct be-
       havior
	  LWG  2015  C++11	T could	be an array of incomplete the behavior
       is
			      class type with unknown bound	 undefined  in
       this case

See also
	  is_trivially_copyable		      checks  if  a  type is trivially
       copyable
	  (C++11)			     (class template)
	  is_default_constructible
	  is_trivially_default_constructible
	  is_nothrow_default_constructible   checks if a type  has  a  default
       constructor
	  (C++11)			     (class template)
	  (C++11)
	  (C++11)

http://cppreference.com		  2024.06.10		    std::is_trivial(3)

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