std::ranges::iota_view<W, Bound>:: empty

Checks whether the range is empty (i.e. whether the beginning value is the same as the sentinel value).

Return value

value_ == bound_

Example

#include <cassert>
#include <ranges>
 
int main()
{
    auto a = std::ranges::iota_view<int, int>();
    assert(a.empty());
 
    auto b = std::ranges::iota_view(4);
    assert(!b.empty());
 
    auto c = std::ranges::iota_view(4, 8);
    assert(!c.empty());
}

Defect reports

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

See also