std::experimental::nonesuch (3) - Linux Manuals
std::experimental::nonesuch: std::experimental::nonesuch
NAME
std::experimental::nonesuch - std::experimental::nonesuch
Synopsis
Defined in header <experimental/type_traits>
struct nonesuch {
~nonesuch() = delete;
nonesuch(nonesuch const&) = delete; (library fundamentals TS v2)
void operator=(nonesuch const&) = delete;
};
std::experimental::nonesuch is a class type used by std::experimental::detected_t to indicate detection failure.
nonesuch has no default constructor or initializer-list constructor, and is not an aggregate.
Notes
nonesuch cannot be constructed, destroyed, or copied.
Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
DR Applied to Behavior as published Correct behavior
LWG_2960 LFTSv2 nonesuch may be an aggregate and has an implicit conversion sequence from {} made non-aggregate and removed ICS