operator-(ranges::chunk_view::outer-iterator)
From cppreference.com
< cpp | ranges | chunk view | outer iterator
Revision as of 10:25, 17 May 2023 by Space Mission (Talk | contribs)
| friend constexpr difference_type operator-( std::default_sentinel_t s, const /*outer-iterator*/& i ) |
(1) | (since C++23) |
| friend constexpr difference_type operator-( const /*outer-iterator*/& i, std::default_sentinel_t s ) |
(2) | (since C++23) |
Calculates the distance between the iterator and sentinel.
Let parent_ be the underlying pointer to enclosing chunk_view.
1) Equivalent to:
const auto dist = ranges::end(x.parent_->base_) - *x.parent_->current_; if (dist < x.parent_->remainder_) return dist == 0 ? 0 : 1; return /*div-ceil*/(dist - x.parent_->remainder_, x.parent_->n_) + 1;
2) Equivalent to: return -(y - x);.
These functions are not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when std::ranges::chunk_view::outer-iterator is an associated class of the arguments.
Contents |
Parameters
| i | - | the iterator |
| s | - | the sentinel |
Return value
1,2) A distance (in number of elements) between given iterator and sentinel
Example
| This section is incomplete Reason: no example |
See also
| (C++23) |
increments the iterator (public member function) |
