std::ranges::cartesian_product_view<First, Vs...>::iterator<Const>::next, std::ranges::cartesian_product_view<First, Vs...>::iterator<Const>::prev, std::ranges::cartesian_product_view<First, Vs...>::iterator<Const>::distance_from

 

C++

Compiler support

Freestanding and hosted

Language

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::cartesian_product_view

Member functions

cartesian_product_view::cartesian_product_view (C++23)

cartesian_product_view::begin (C++23)

cartesian_product_view::end (C++23)

cartesian_product_view::size (C++23)

Deduction guides

Iterator

Member functions

cartesian_product_view::iterator::iterator (C++23)

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

cartesian_product_view::iterator::operator[] (C++23)

cartesian_product_view::iterator::operator++ cartesian_product_view::iterator::operator++(int) cartesian_product_view::iterator::operator-- cartesian_product_view::iterator::operator--(int) cartesian_product_view::iterator::operator+= cartesian_product_view::iterator::operator-= (C++23)(C++23)(C++23)(C++23)(C++23)(C++23)

cartesian_product_view::iterator::next (C++23)

cartesian_product_view::iterator::prev (C++23)

cartesian_product_view::iterator::distance_from (C++23)

Non-member functions

operator==(cartesian_product_view::iterator) operator<=>(cartesian_product_view::iterator) (C++23)(C++23)

operator+(cartesian_product_view::iterator) operator-(cartesian_product_view::iterator) (C++23)(C++23)

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

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

 

std::ranges::cartesian_product_view::iterator::next

template< std::size_t N = sizeof...(Vs) > constexpr void /*next*/();                  // exposition only		(since C++23)

If called with default template parameter, recursively generates the next element (the tuple of iterators) in cartesian_product_view.

Let current_ denote the underlying tuple of iterators. Equivalent to:

auto& it = std::get<N>(current_);
++it;
if constexpr (N > 0)
{
    if (it == ranges::end(std::get<N>(parent_->bases_)))
    {
        it = ranges::begin(std::get<N>(parent_->bases_));
        next<N - 1>();
    }
}

Used in the following non-static member functions:

• ranges::cartesian_product_view::operator+

std::ranges::cartesian_product_view::iterator::prev

template< std::size_t N = sizeof...(Vs) > constexpr void /*prev*/();                  // exposition only		(since C++23)

If called with default template parameter, recursively generates the previous element (the tuple of iterators) in cartesian_product_view.

Let current_ denote the underlying tuple of iterators. Equivalent to:

auto& it = std::get<N>(current_);
if constexpr (N > 0)
{
    if (it == ranges::begin(std::get<N>(parent_->bases_)))
    {
        it = /*cartesian-common-arg-end*/(std::get<N>(parent_->bases_));
        prev<N - 1>();
    }
}
--it;

Used in the following non-static member functions:

• ranges::cartesian_product_view::operator-

std::ranges::cartesian_product_view::iterator::distance_from

template< class Tuple > constexpr difference_type     /*distance-from*/( const Tuple& t ) const;      // exposition only		(since C++23)

Returns the "distance" (i.e., number of "hops") between two iterators.

Let:

• parent_ be the underlying pointer to cartesian_product_view
• /*scaled-size*/(N) be:
  • the product of static_cast<difference_type>(ranges::size(std::get<N>(parent_->bases_))) and /*scaled-size*/(N + 1) if N ≤ sizeof...(Vs), otherwise
  • static_cast<difference_type>(1);
• /*scaled-distance*/(N) be the product of static_cast<difference_type>(std::get<N>(current_) - std::get<N>(t)) and /*scaled-size*/(N + 1);
• /*scaled-sum*/ be the sum of /*scaled-distance*/(N) for every integer 0 ≤ N ≤ sizeof...(Vs).

Returns: /*scaled-sum*/.

The behavior is undefined if /*scaled-sum*/ cannot be represented by difference_type.

Used in the following functions:

• operator-(const /*iterator*/&, const /*iterator*/&)
• operator-(const /*iterator*/&, std::default_sentinel_t)

Parameters

t

-

a tuple of iterators to find the distance to