std::ranges::adjacent_view<V,N>::adjacent_view

 

C++

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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::adjacent_view

Member functions

adjacent_view::adjacent_view (C++23)

adjacent_view::begin (C++23)

adjacent_view::end (C++23)

adjacent_view::size (C++23)

Iterator

Member functions

adjacent_view::iterator::iterator (C++23)

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

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

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

Non-member functions

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

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

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

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

Sentinel

Member functions

adjacent_view::sentinel::sentinel (C++23)

Non-member functions

operator==(adjacent_view::iterator,adjacent_view::sentinel) (C++23)

operator-(adjacent_view::iterator,adjacent_view::sentinel) (C++23)

 

adjacent_view() requires std::default_initializable<V> = default;	(1)	(since C++23)
constexpr explicit adjacent_view( V base );	(2)	(since C++23)

Constructs an adjacent_view.

1) Default constructor. Value-initializes the underlying view.

2) Initializes the underlying view base_ with std::move(base).

Parameters

base

-

the underlying view

Example

A link to test: Compiler Explorer/g++-13

Run this code

#include <tuple>
#include <ranges>
#include <string>
#include <iostream>
 
template<class... Ts>
void print(std::tuple<Ts...> const& tuple)
{
    std::apply([&](auto&& arg, auto&&... args) {
        std::cout << arg;
        ((std::cout << args), ...);
    }, tuple);
    std::cout << '\n';
}
 
int main()
{
    const std::string v {"ABCDEF"};
    constexpr int window_size{4};
 
    std::cout
        << "window size = " << window_size << '\n'
        << "v = " << v << '\n';
 
    auto view = std::views::adjacent<window_size>(v); // overload (2)
 
    for (auto const& tuple: view)
    {
        print(tuple);
    }
}

Output:

window size = 4
v = ABCDEF
ABCD
BCDE
CDEF