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

 

C++

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Freestanding and hosted

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Standard library

Standard library headers

Named requirements

Feature test macros (C++20)

Language support library

Concepts library (C++20)

Metaprogramming library (C++11)

Diagnostics library

General utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Localizations library

Input/output library

Filesystem library (C++17)

Regular expressions library (C++11)

Concurrency support library (C++11)

Technical specifications

Symbols index

External libraries

 

Ranges library

Range access
begin cbegin end cend	rbegin crbegin rend crend	size ssize data cdata	empty
Range conversions
to (C++23)
Range primitives
range_size_trange_difference_trange_value_trange_reference_t	iterator_tconst_iterator_tsentinel_tconst_sentinel_t (C++23)(C++23)	range_const_reference_trange_rvalue_reference_trange_common_reference_t (C++23)	elements_of (C++23)
Dangling iterator handling
dangling	borrowed_iterator_t	borrowed_subrange_t
Range concepts
range borrowed_range sized_range constant_range (C++23)	common_range view viewable_range	input_range output_range forward_range	bidirectional_range random_access_range contiguous_range
Views
view_interface	subrange
Range factories
empty_viewviews::empty single_viewviews::single	iota_viewviews::iota repeat_viewviews::repeat (C++23)(C++23)	basic_istream_viewviews::istream
Range adaptors
views::all_tviews::all ref_view owning_view as_rvalue_viewviews::as_rvalue (C++23)(C++23) filter_viewviews::filter transform_viewviews::transform take_viewviews::take take_while_viewviews::take_while	drop_viewviews::drop drop_while_viewviews::drop_while join_viewviews::join join_with_viewviews::join_with (C++23)(C++23) lazy_split_viewviews::lazy_split split_viewviews::split views::counted common_viewviews::common	reverse_viewviews::reverse as_const_viewviews::as_const (C++23)(C++23) elements_viewviews::elements keys_viewviews::keys values_viewviews::values enumerate_viewviews::enumerate (C++23)(C++23) zip_viewviews::zip (C++23)(C++23) zip_transform_viewviews::zip_transform (C++23)(C++23)	adjacent_viewviews::adjacent (C++23)(C++23) views::pairwise (C++23) adjacent_transform_viewviews::adjacent_transform (C++23)(C++23) views::pairwise_transform (C++23) chunk_viewviews::chunk (C++23)(C++23) slide_viewviews::slide (C++23)(C++23) chunk_by_viewviews::chunk_by (C++23)(C++23) stride_viewviews::stride (C++23)(C++23) cartesian_product_viewviews::cartesian_product (C++23)(C++23)
Range generators
std::generator (C++23)
Range adaptor objects
Range adaptor closure objects
range_adaptor_closure (C++23)
Helper items
copyable-box movable-box (until C++23)(C++23)	simple-view non-propagating-cache

 

std::ranges::chunk_view

Member functions
chunk_view::chunk_view (C++23)
chunk_view::base (C++23)
chunk_view::begin (C++23)
chunk_view::end (C++23)
chunk_view::size (C++23)
Classes for input_ranges Deduction guides outer-iterator chunk_view::outer-iterator::outer-iterator (C++23) chunk_view::outer-iterator::operator= (C++23) chunk_view::outer-iterator::operator* (C++23) chunk_view::outer-iterator::operator++ chunk_view::outer-iterator::operator++(int) (C++23)(C++23) operator==(chunk_view::outer-iterator) (C++23) operator-(chunk_view::outer-iterator) (C++23) outer-iterator::value_type chunk_view::outer-iterator::value_type::value_type (C++23)   chunk_view::outer-iterator::value_type::begin (C++23) chunk_view::outer-iterator::value_type::end (C++23) chunk_view::outer-iterator::value_type::size (C++23) inner-iterator chunk_view::inner-iterator::inner-iterator (C++23) chunk_view::inner-iterator::operator= (C++23) chunk_view::inner-iterator::base (C++23) chunk_view::inner-iterator::operator* (C++23) chunk_view::inner-iterator::operator++ chunk_view::inner-iterator::operator++(int) (C++23)(C++23) operator==(chunk_view::inner-iterator) (C++23) operator-(chunk_view::inner-iterator) (C++23) iter_move(chunk_view::inner-iterator) (C++23) iter_swap(chunk_view::inner-iterator) (C++23)	Class template for forward_ranges iterator chunk_view::iterator::iterator (C++23) chunk_view::iterator::base (C++23) chunk_view::iterator::operator* (C++23) chunk_view::iterator::operator[] (C++23) chunk_view::iterator::operator++ chunk_view::iterator::operator++(int) chunk_view::iterator::operator-- chunk_view::iterator::operator--(int) chunk_view::iterator::operator+= chunk_view::iterator::operator-= (C++23)(C++23)(C++23)(C++23)(C++23)(C++23) operator==(chunk_view::iterator) operator<(chunk_view::iterator) operator>(chunk_view::iterator) operator<=(chunk_view::iterator) operator>=(chunk_view::iterator) operator<=>(chunk_view::iterator) (C++23)(C++23)(C++23)(C++23)(C++23)(C++23) operator+(chunk_view::iterator) operator-(chunk_view::iterator) (C++23)(C++23)

 

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.

See also

operator++ (C++23)

increments the iterator (public member function)