operator==,!=,<,<=,>,>=,<=>(std::thread::id)
bool operator==( thread::id lhs, thread::id rhs ) noexcept; |
(1) | (C++11 起) |
bool operator!=( thread::id lhs, thread::id rhs ) noexcept; |
(2) | (C++11 起) (C++20 前) |
bool operator<( thread::id lhs, thread::id rhs ) noexcept; |
(3) | (C++11 起) (C++20 前) |
bool operator<=( thread::id lhs, thread::id rhs ) noexcept; |
(4) | (C++11 起) (C++20 前) |
bool operator>( thread::id lhs, thread::id rhs ) noexcept; |
(5) | (C++11 起) (C++20 前) |
bool operator>=( thread::id lhs, thread::id rhs ) noexcept; |
(6) | (C++11 起) (C++20 前) |
std::strong_ordering operator<=>( thread::id lhs, thread::id rhs ) noexcept; |
(7) | (C++20 起) |
比较二个线程标识符。
1-2) 检查
lhs
与 rhs
是否表示同一线程或均不表示线程。3-7) 以未指明的全序比较
lhs
与 rhs
。参数
lhs, rhs | - | 要比较的线程标识符 |
返回值
1-6) 若对应关系成立则为 true ,否则为
false
。7) 若在该全序中
lhs
小于 rhs
则为 std::strong_ordering::less ;否则若在该全序中 rhs
小于 lhs
则为 std::strong_ordering::greater ;否则为 std::strong_ordering::equal 。复杂度
常数。