malloy::concepts::callable_string Concept Reference

#include <type_traits.hpp>

Concept definition

    template<typename T>
    concept callable_string = requires(T t)
    {
        { t() } -> std::same_as<std::string>;
        // { t() } -> std::same_as<std::string_view>;     // ToDo: Want to extend this to also accept std::string_view as return type.
    }

Detailed Description

Concept to check whether a type has a function with the following signature:

• std::string operator()()

Template Parameters

T