The std::is_trivially_copy_assignable template of C++ STL is present in the <type_traits> header file. The std::is_trivially_copy_assignable template of C++ STL is used to check whether T is trivially copy assignable type or not. It return the boolean value true if T is trivially copy assignable type, otherwise return false.
Header File:
#include<type_traits>
Template Class:
template<class T> struct is_trivially_copy_assignable
Syntax:
is_trivially_copy_assignable<T>::value
Parameter: The template std::is_trivially_copy_assignable accepts a single parameter T(Trait class) to check whether T is trivially copy assignable type or not.
Return Value: The template std::is_trivially_copy_assignable returns a boolean variable as shown below:
- True: If the type T is a trivially copy assignable.
- False: If the type T is not a trivially copy assignable.
Below is the program to demonstrate std::is_trivially_copy_assignable in C++:
Program 1:
// C++ program to illustrate // std::is_trivially_copy_assignable #include <bits/stdc++.h> #include <type_traits> using namespace std; // Declare Structures struct X { }; struct Y { Y& operator=(const Y&) { return *this; } }; // Driver Code int main() { cout << std::boolalpha; cout << "int? " << is_trivially_copy_assignable<int>::value << endl; cout << "X? " << is_trivially_copy_assignable<X>::value << endl; cout << "Y? " << is_trivially_copy_assignable<Y>::value << endl; cout << "int[2]? " << is_trivially_copy_assignable<int[2]>::value << endl; return 0; } |
int? true X? true Y? false int[2]? false
Reference: http://www.cplusplus.com/reference/type_traits/is_trivially_copy_assignable/
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