std::ranges::filter_view<V,Pred>::sentinel

 

C++

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Feature test macros (C++20)

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Concepts library (C++20)

Metaprogramming library (C++11)

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Ranges library (C++20)

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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::filter_view

Member functions

filter_view::filter_view (C++20)

filter_view::base (C++20)

filter_view::pred (C++20)

filter_view::begin (C++20)

filter_view::end (C++20)

Deduction guides (C++20)

Iterator

filter_view::iterator::iterator (C++20)

filter_view::iterator::base (C++20)

filter_view::iterator::operator*filter_view::iterator::operator-> (C++20)(C++20)

filter_view::iterator::operator++ filter_view::iterator::operator++(int) (C++20)(C++20)

filter_view::iterator::operator-- filter_view::iterator::operator--(int) (C++20)(C++20)

operator==(filter_view::iterator) (C++20)

iter_move(filter_view::iterator) (C++20)

iter_swap(filter_view::iterator) (C++20)

Sentinel

filter_view::sentinel::sentinel (C++20)

filter_view::sentinel::base (C++20)

operator==(filter_view::iterator, filter_view::sentinel) (C++20)

 

class /*sentinel*/;		(since C++20)

The return type of filter_view::end when the underlying view type (V) does not model common_range.

The name sentinel is for exposition purposes only.

Data members

Typical implementations of sentinel hold only one non-static data member: the sentinel of the underlying view (shown here as end_ for exposition only).

Member functions

(constructor) (C++20)	constructs a sentinel (public member function)
base (C++20)	returns the underlying sentinel (public member function)

std::ranges::filter_view::sentinel::sentinel

/*sentinel*/() = default;	(1)	(since C++20)
constexpr explicit /*sentinel*/( filter_view& parent );	(2)	(since C++20)

1) Value-initializes end_ via its default member initializer (= ranges::sentinel_t<V>()).

2) Initializes end_ with ranges::end(parent.base_).

std::ranges::filter_view::sentinel::base

constexpr ranges::sentinel_t<V> base() const;		(since C++20)

Equivalent to return end_;.

Non-member functions

operator== (C++20)

compares the underlying iterator and the underlying sentinel (function)

operator==(std::ranges::filter_view::iterator, std::ranges::filter_view::sentinel)

friend constexpr bool operator==( const /*iterator*/& x,                                   const /*sentinel*/& y );		(since C++20)

Equivalent to return x.current_ == y.end_;, where current_ is the underlying iterator wrapped in filter_view::iterator.

The != operator is synthesized from operator==.

This function is not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when std::ranges::filter_view::sentinel is an associated class of the arguments.