std::ranges::join_with_view<V,Pattern>::iterator<Const>::operator++,--

 

C++

Compiler support

Freestanding and hosted

Language

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_t range_value_t	range_reference_trange_const_reference_trange_rvalue_reference_t   (C++23)	iterator_tconst_iterator_tsentinel_t (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
Factories
empty_viewviews::empty iota_viewviews::iota	single_viewviews::single basic_istream_viewviews::istream	repeat_viewviews::repeat (C++23)(C++23)
Adaptors
ref_view views::all_tviews::all common_viewviews::common owning_view views::counted reverse_viewviews::reverse zip_viewviews::zip (C++23)(C++23) as_const_viewviews::as_const (C++23)(C++23) as_rvalue_viewviews::as_rvalue (C++23)(C++23)	take_viewviews::take take_while_viewviews::take_while drop_viewviews::drop drop_while_viewviews::drop_while zip_transform_viewviews::zip_transform (C++23)(C++23) adjacent_transform_viewviews::adjacent_transform (C++23)(C++23)   cartesian_product_viewviews::cartesian_product (C++23)(C++23)	elements_viewviews::elements keys_viewviews::keys values_viewviews::values transform_viewviews::transform adjacent_viewviews::adjacent (C++23)(C++23) slide_viewviews::slide (C++23)(C++23) stride_viewviews::stride (C++23)(C++23)	filter_viewviews::filter join_viewviews::join split_viewviews::split lazy_split_viewviews::lazy_split join_with_viewviews::join_with (C++23)(C++23) chunk_viewviews::chunk (C++23)(C++23) chunk_by_viewviews::chunk_by (C++23)(C++23)
Range adaptor objects
Range adaptor closure objects
Helper items
copyable-box	simple-view

 

std::ranges::join_with_view

Member functions

join_with_view::join_with_view (C++23)

join_with_view::base (C++23)

join_with_view::begin (C++23)

join_with_view::end (C++23)

Deduction guides

Iterator

join_with_view::iterator::iterator (C++23)

join_with_view::iterator::operator* (C++23)

join_with_view::iterator::operator++ join_with_view::iterator::operator++(int) join_with_view::iterator::operator-- join_with_view::iterator::operator--(int) (C++23)(C++23)(C++23)(C++23)

operator==(join_with_view::iterator) (C++23)

iter_move(join_with_view::iterator) (C++23)

iter_swap(join_with_view::iterator) (C++23)

Sentinel

join_with_view::sentinel::sentinel (C++23)

operator==(join_with_view::sentinel) (C++23)

 

constexpr /*iterator*/& operator++();	(1)	(since C++23)
constexpr void operator++( int );	(2)	(since C++23)
constexpr /*iterator*/ operator++( int )   requires std::is_reference_v<InnerBase> &&            ranges::forward_range<Base> && ranges::forward_range<InnerBase>;	(3)	(since C++23)
constexpr /*iterator*/& operator--()   requires std::is_reference_v<InnerBase> &&            ranges::bidirectional_range<Base> &&            ranges::bidirectional_range<InnerBase> &&            ranges::common_range<InnerBase> &&            ranges::bidirectional_range<PatternBase> &&            ranges::common_range<PatternBase>;	(4)	(since C++23)
constexpr /*iterator*/ operator--( int )   requires std::is_reference_v<InnerBase> &&            ranges::bidirectional_range<Base> &&            ranges::bidirectional_range<InnerBase> &&            ranges::common_range<InnerBase> &&            ranges::bidirectional_range<PatternBase> &&            ranges::common_range<PatternBase>;	(5)	(since C++23)

Increments or decrements the iterator.

1) Increments the stored inner iterator. (The inner iterator may point to either InnerBase or PatternBase.)

• If the incremented inner iterator reaches the end of the pattern range, it is destroyed, and an iterator to the beginning of the next inner range is constructed.
• If the incremented inner iterator reaches the end of the inner range, the outer iterator is incremented, and if the outer iterator is not the end iterator, the inner iterator is destroyed and an iterator to the beginning of the pattern range is constructed.
• The above steps may be repeated (e.g. if the pattern is empty), until either the inner range is not empty, or the outer iterator reaches the end.

2) Equivalent to ++*this;

3) Equivalent to auto tmp = *this; ++*this; return tmp;

4) If the outer iterator is the end iterator, it is decremented. Then:

• If the stored inner iterator refers to the beginning of the inner range, it is destroyed, and an iterator to the end of the pattern range is constructed.
• If the stored inner iterator refers to the beginning of the pattern range, it is destroyed, the outer iterator is decremented, and an iterator to end of the inner range is constructed.
• The above steps may be repeated (e.g. if the pattern is empty), until the inner range is not empty.

Finally, the inner iterator is decremented.

5) Equivalent to auto tmp = *this; --*this; return tmp;

If InnerBase is not a reference, the inner range is stored in the parent join_with_view for iteration. The inner range need not be movable.

If InnerBase is a reference, and the outer iterator reaches the end, the inner iterator points to the beginning of the pattern range.

Parameters

(none)

Return value

1,4) *this

3,5) a copy of *this that was made before the change