class template
<type_traits>
std::is_nothrow_move_constructible
template <class T> struct is_nothrow_move_constructible;
Is move constructible throwing no exceptions
Template parameters
- T
- A complete type, or void (possible cv-qualified), or an array of unknown bound.
Member constants
Inherited from integral_constant:
| member constant | definition |
|---|
| value | either true or false |
Example
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
|
// is_nothrow_move_constructible example
#include <iostream>
#include <type_traits>
struct A { };
struct B { B(B&&){} };
struct C { C(C&&) noexcept {} };
int main() {
std::cout << std::boolalpha;
std::cout << "is_nothrow_move_constructible:" << std::endl;
std::cout << "int: " << std::is_nothrow_move_constructible<int>::value << std::endl;
std::cout << "A: " << std::is_nothrow_move_constructible<A>::value << std::endl;
std::cout << "B: " << std::is_nothrow_move_constructible<B>::value << std::endl;
std::cout << "C: " << std::is_nothrow_move_constructible<C>::value << std::endl;
return 0;
}
|
Output:
is_nothrow_move_constructible:
int: true
A: true
B: false
C: true
|