std::ranges:: output_range

From cppreference.com
Ranges library
Range adaptors
Defined in header <ranges>
template < class R, class T >

concept output_range =

ranges:: range < R > && std:: output_iterator < ranges:: iterator_t < R > , T > ;
(since C++20)

The output_range concept is a refinement of range for which ranges::begin returns a model of output_iterator .