std::indirectly_readable(3)

NAME
std::indirectly_readable - std::indirectly_readable

Synopsis
   Defined in header <iterator>
   template< class In >
       concept __IndirectlyReadableImpl =
           requires(const In in) {
               typename std::iter_value_t<In>;
               typename std::iter_reference_t<In>;
               typename std::iter_rvalue_reference_t<In>;
               { *in } -> std::same_as<std::iter_reference_t<In>>;
               { ranges::iter_move(in) } ->
   std::same_as<std::iter_rvalue_reference_t<In>>;
           } && (exposition
           std::common_reference_with< only*)
               std::iter_reference_t<In>&&, std::iter_value_t<In>&
           > &&
           std::common_reference_with<
               std::iter_reference_t<In>&&,
   std::iter_rvalue_reference_t<In>&&
           > &&
           std::common_reference_with<
               std::iter_rvalue_reference_t<In>&&, const
   std::iter_value_t<In>&
           >;
   template< class In >
       concept indirectly_readable = (since C++20)
           __IndirectlyReadableImpl<std::remove_cvref_t<In>>;
   The concept indirectly_readable is modeled by types that are readable by applying
   operator*, such as pointers, smart pointers, and input iterators.
   Semantic requirements
   Given a value i of type I, I models indirectly_readable only if all concepts it
   subsumes are modeled and the expression *i is equality-preserving.
   Equality preservation
   Expressions declared in requires expressions of the standard library concepts are
   required to be equality-preserving (except where stated otherwise).