operator- (ranges::chunk_view:: outer-iterator )

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C++
Ranges library
Range adaptors
std::ranges::chunk_view
Member functions
Classes for input_range s
Deduction guides
outer-iterator
operator- (chunk_view:: outer-iterator )
outer-iterator ::value_type
inner-iterator
friend constexpr difference_type operator - ( std:: default_sentinel_t s,

const /*outer-iterator*/ & i )
requires ranges :: sized_sentinel_for < ranges:: sentinel_t < V > ,

ranges:: iterator_t < V >> ;
(1) (since C++23)
friend constexpr difference_type operator - ( const /*outer-iterator*/ & i,

std:: default_sentinel_t s )
requires ranges :: sized_sentinel_for < ranges:: sentinel_t < V > ,

ranges:: iterator_t < V >> ;
(2) (since C++23)

Calculates the distance (in number of chunks) between the iterator and sentinel .

Let parent_ be the underlying pointer to enclosing chunk_view .

1) Equivalent to: 
const auto dist = ranges::end(i.parent_->base_) - *i.parent_->current_;
if (dist < i.parent_->remainder_)
    return dist == 0 ? 0 : 1;
return /*div-ceil*/(dist - i.parent_->remainder_, i.parent_->n_) + 1;
2) Equivalent to: return - ( s - i ) ; .

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.

Parameters

i - the iterator
s - the sentinel

Return value

The distance between given iterator and sentinel.

Example

This section is incomplete
Reason: no example

See also

(C++23)
increments the iterator
(public member function)
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