std::is_trivially_move_assignable in C++ with Examples
Last Updated :
12 Jun, 2020
The std::is_trivially_move_assignable template of C++ STL is present in the <type_traits> header file. The std::is_trivially_move_assignable template of C++ STL is used to check whether the T is a trivially move assignable type or not. It return the boolean value true if T is trivially move assignable type, otherwise return false.
Header File:
#include<type_traits>
Template Class:
template <class T>
struct is_trivially_move_assignable;
Syntax:
std::is_trivially_move_assignable<T>::value
Parameter: The template std::is_trivially_move_assignable accepts a single parameter T(Trait class) to check whether T is trivially move assignable or not.
Return Value: The template std::is_trivially_move_assignable returns a boolean variable as shown below:
- True: If the type T is a trivially move assignable.
- False: If the type T is not a trivially move assignable.
Below is the program to demonstrate std::is_trivially_move_assignable in C++:
Program:
#include <bits/stdc++.h>
#include <type_traits>
using namespace std;
class A {
};
struct B {
B& operator=(B&&) = delete ;
};
int main()
{
cout << boolalpha;
cout << "int is_trivially_move_assignable? "
<< is_trivially_move_assignable< int >::value
<< endl;
cout << "A is_trivially_move_assignable? "
<< is_trivially_move_assignable<A>::value
<< endl;
cout << "B is_trivially_move_assignable? "
<< is_trivially_move_assignable<B>::value
<< endl;
cout << "int[2] is triviallay move assignable? "
<< is_trivially_move_assignable< int [2]>::value
<< endl;
return 0;
}
|
Output:
int is_trivially_move_assignable? true
A is_trivially_move_assignable? true
B is_trivially_move_assignable? false
int[2] is triviallay move assignable? false
Reference: http://www.cplusplus.com/reference/type_traits/is_trivially_move_assignable/
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