operator==,!=,<,<=,>,>=,<=>(std::thread::id)

operator==,!=,<,<=,>,>=,<=>(std::thread::id)_C++中文网

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 。

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 。

常数。