operator-(ranges::elements_view::sentinel)
From cppreference.com
template< bool OtherConst >
requires std::sized_sentinel_for<ranges::sentinel_t<Base>,
ranges::iterator_t</*maybe-const*/<OtherConst, V>>>
friend constexpr ranges::range_difference_t</*maybe-const*/<OtherConst, V>>
operator-( const /*iterator*/<OtherConst>& x, const /*sentinel*/& y );
|
(1) | (since C++20) |
template< bool OtherConst >
requires std::sized_sentinel_for<ranges::sentinel_t<Base>,
ranges::iterator_t</*maybe-const*/<OtherConst, V>>>
friend constexpr ranges::range_difference_t</*maybe-const*/<OtherConst, V>>
operator-( const /*sentinel*/& y, const /*iterator*/<OtherConst>& x );
|
(2) | (since C++20) |
Computes the distance between the underlying iterator of x and the underlying sentinel of y.
These function templates are not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when elements_view::sentinel is an associated class of the arguments.
Parameters
| x | - | an iterator |
| y | - | a sentinel |
Return value
1)
x.base() - y.base()2)
y.base() - x.base()