std::is_trivially_copyable template in C++ with Examples
The std::is_trivially_copyable template of C++ STL is present in the <type_traits> header file. The std::is_trivially_copyable template of C++ STL is used to check whether T is trivially copyable type (a type whose storage is contiguous) or not. It return the boolean value true if T is trivially copyable type, otherwise return false.
Header File:
#include<type_traits>
Template Class:
template<class T>
struct is_trivially_copyable;
Syntax:
std::is_trivially_copyable<T>::value
Parameter: The template std::is_trivially_copyable accepts a single parameter T(Trait class) to check whether T is trivially copyable type or not.
Return Value:The template std::is_trivially_copyable returns a boolean variable as shown below:
- True: If the type T is a trivially copyable.
- False: If the type T is not a trivially copyable.
Below is the program to demonstrate std::is_trivially_copyable template in C++:
Program:
#include <bits/stdc++.h>
#include <type_traits>
using namespace std;
struct X {
int a;
};
struct Y {
Y( const Y&) {}
};
struct Z {
virtual void GFG();
};
struct A {
~A() = delete ;
};
struct B : A {
};
int main()
{
cout << boolalpha;
cout << is_trivially_copyable<X>::value
<< endl;
cout << is_trivially_copyable<Y>::value
<< endl;
cout << is_trivially_copyable<Z>::value
<< endl;
cout << is_trivially_copyable<A>::value
<< endl;
cout << is_trivially_copyable<B>::value
<< endl;
return 0;
}
|
Output:
true
false
false
true
true
Last Updated :
12 Jun, 2020
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