类模板
<type_traits>
std::is_nothrow_move_constructible
template <class T> struct is_nothrow_move_constructible;
Is move constructible throwing no exceptions
模板参数
- T
- 一个完整类型，或者void（可能带 cv 限定），或者一个未知边界的数组。
示例
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// 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;
}
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输出
is_nothrow_move_constructible:
int: true
A: true
B: false
C: true
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