std::experimental::nonesuch(3) | C++ Standard Libary | std::experimental::nonesuch(3) |
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 made non-aggregate
and
implicit conversion sequence from {} removed ICS
2022.07.31 | http://cppreference.com |