QxSql::sql_optional Concept Reference

Specifies that a type is a specialization of std::optional that manages values of a SQL convertible type. More...

Concept definition

template<typename T>
concept QxSql::sql_optional =  Qx::specializes<T, std::optional> &&
                        sql_convertible<typename T::value_type>

Detailed Description

Satisfied if T satisfies Qx::specialize (for std::optional) and T::value_type satisfies sql_convertible.