operator==(std::ranges::take_view::sentinel<Const>)

friend constexpr bool
    operator==( const std::counted_iterator<ranges::iterator_t<Base>>& y,
                const /*sentinel*/& x );

template< bool OtherC = !Const >
    requires std::sentinel_for<ranges::sentinel_t<Base>,
                               ranges::iterator_t</*add-const-if*/<OtherC, V>>>
friend constexpr bool operator==( const std::counted_iterator<ranges::iterator_t<
                                      /*add-const-if*/<OtherC, V>>>& y,
                                  const /*sentinel*/& x );

Compares a take_view::/*sentinel*/ with a std::counted_iterator (typically obtained from a call to take_view::begin).

Returns true if y points past the N-th element (where N is the number passed to the constructor of take_view), or if end of underlying view is reached.

The exposition-only alias template add-const-if is defined as template<bool C, class T> using /*add-const-if*/ = std::conditional_t<C, const T, T>;.

These functions are not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when std::ranges::take_view::sentinel<Const> is an associated class of the arguments.

The != operator is synthesized from operator==.

Parameters

Return value

y.count() == 0 || y.base() == x.end_, where end_ denotes the underlying sentinel.

Example

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.