operator- (std::move_iterator<Iter>, std::move_sentinel)

From cppreference.net

template < std:: sized_sentinel_for < Iter > S > friend constexpr std:: iter_difference_t < Iter > operator - ( const std:: move_sentinel < S > & s, const move_iterator & i ) ;	(1)	(C++20 起)
template < std:: sized_sentinel_for < Iter > S > friend constexpr std:: iter_difference_t < Iter > operator - ( const move_iterator & i, const std:: move_sentinel < S > & s ) ;	(2)	(C++20 起)

返回 move_iterator 与 move_sentinel 之间的距离。

这些函数模板对普通的非限定查找或限定查找不可见，仅当 std:: move_iterator < Iter > 作为参数的关联类时，才能通过实参依赖查找被发现。

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Feature test macros (C++20)
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Concepts library (C++20)
Diagnostics library
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Metaprogramming library (C++11)
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Ranges library (C++20)
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Member functions
move_iterator::move_iterator
move_iterator::operator=
move_iterator::base
move_iterator::operator* move_iterator::operator->
move_iterator::operator[]
move_iterator::operator++ move_iterator::operator+ move_iterator::operator+= move_iterator::operator-- move_iterator::operator- move_iterator::operator-=
Non-member functions
operator== operator!= operator< operator<= operator> operator>= operator<=> (until C++20) (C++20)
operator== (move_sentinel) (C++20)
operator+
operator-
operator- (move_sentinel) (C++20)
iter_move (C++20)
iter_swap (C++20)
make_move_iterator (C++11)

目录

i	-	std:: move_iterator < Iter >
s	-	std:: move_sentinel < S > ，其中 `S` 需满足 std:: sized_sentinel_for < Iter > 概念