std::experimental::ranges::IndirectlyCopyableStorable
Min standard notice:
Header: <experimental/ranges/iterator>
# Declarations
template< class In, class Out >
concept bool IndirectlyCopyableStorable =
IndirectlyCopyable<In, Out> &&
Writable<Out, const ranges::value_type_t<In>&> &&
Copyable<ranges::value_type_t<In>> &&
Constructible<ranges::value_type_t<In>, ranges::reference_t<In>> &&
Assignable<ranges::value_type_t<In>&, ranges::reference_t<In>>;
(ranges TS)