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

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C++
Ranges library
Range adaptors
std::ranges::filter_view
class /*sentinel*/ ;
(since C++20)
( exposition only* )

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

Data members

Member name Definition
end_ (private) The sentinel of the underlying view .
( exposition-only member object* )

Member functions

constructs a sentinel
(public member function)
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

(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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