meta::is_detected,detected_t,detected_or¶
Defined in header <mgs/meta/detected.hpp>
.
template <template <typename...> class Op, typename... Args>
using is_detected = /* implementation-defined */;
template <template <typename...> class Op, typename... Args>
using detected_t = /* implementation-defined */;
template <typename Default, template <typename...> class Op, typename... Args>
using detected_or = /* implementation-defined */;
struct nonesuch {
~nonesuch() = delete;
nonesuch(nonesuch const&) = delete;
void operator=(nonesuch const&) = delete;
};
Implementation of the detected idiom, present in the Library Fundamentals TS v2.