di::vocab::ConstructibleFromCRefOptional Concept Reference

#include <di/vocab/optional/constructible_from_cref_optional.h>

Concept definition

template<typename T, typename U>
concept di::vocab::ConstructibleFromCRefOptional = 
    concepts::Optional<U> &&
    (concepts::ConstructibleFrom<T, U&> || concepts::ConstructibleFrom<T, U const&> ||
     concepts::ConstructibleFrom<T, U&&> || concepts::ConstructibleFrom<T, U const&&> ||
     concepts::ImplicitlyConvertibleTo<U&, T> || concepts::ImplicitlyConvertibleTo<U const&, T> ||
     concepts::ImplicitlyConvertibleTo<U&&, T> || concepts::ImplicitlyConvertibleTo<U const&&, T>)