std::experimental::_Has_addressof man page

std::experimental::_Has_addressof< _Tp > — Trait that detects the presence of an overloaded unary operator&.

Synopsis

Inherits type< _Has_addressof_mem< _Tp >, _Has_addressof_free< _Tp > >.

struct std::experimental::_Has_addressof< _Tp >" Trait that detects the presence of an overloaded unary operator&.

Practically speaking this detects the presence of such an operator when called on a const-qualified lvalue (e.g. declval<const _Tp&>().operator&()).

Definition at line 164 of file optional.

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Wed Aug 2 2017 libstdc++