std::ranges::split_view<V,Pattern>::end - cppreference.com

constexpr auto end() const;

Returns an iterator or a sentinel representing the end of the resulting subrange. Equivalent to:

constexpr auto end() { if constexpr (ranges::common_range<V>) return iterator{*this, ranges::end(base_), {}}; else return sentinel{*this}; }

Return value

An iterator or a sentinel.

Example

#include <cassert>
#include <ranges>
#include <string_view>

int main()
{
    constexpr std::string_view keywords{"bitand bitor bool break"};
    std::ranges::split_view kw{keywords, ' '};
    assert(4 == std::ranges::distance(kw.begin(), kw.end()));
}

See also