bsl/detected_8hpp_source.html

 #ifndef BSL_DETECTED_HPP
 #define BSL_DETECTED_HPP

 #include "details/detector.hpp"
 #include "nonesuch.hpp"

 namespace bsl
 {
     template<template<class...> class Op, typename... Args>
     using detected_t = typename details::detector<nonesuch, void, Op, Args...>::type;
 }

 #endif
bsl::nonesuch
Used by is_detected to indicate detection failure.
Definition: nonesuch.hpp:38

bsl::detected_t
typename details::detector< nonesuch, void, Op, Args... >::type detected_t
The alias template detected_t is equivalent to typename detected_or<bsl::nonesuch,...
Definition: detected.hpp:41

nonesuch.hpp