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

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.

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