std::experimental::nonesuch (3) - Linux Man Pages

std::experimental::nonesuch: std::experimental::nonesuch


std::experimental::nonesuch - std::experimental::nonesuch


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.


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