mysql::ranges::Can_unfold_twice_with Concept Reference

True if Source_t can be unfolded, and also the value type for the unfolded range can be unfolded, using the given Unfold_t function. More...

#include <flat_view.h>

Concept definition

template<class Source_t, class Unfold_t>
concept mysql::ranges::Can_unfold_twice_with = 
    Can_unfold_with<Source_t, Unfold_t> &&
    Can_unfold_with<Range_value_type<Unfolded_type<Source_t, Unfold_t>>,
                    Unfold_t>

Detailed Description

True if Source_t can be unfolded, and also the value type for the unfolded range can be unfolded, using the given Unfold_t function.