Defined in header

bool unique() const;

Usage signed

Defined in header

template< class CharT, class Traits, class ResultType > std::basic_ostream<CharT

Any lvalue or rvalue of this type can be swapped with any lvalue or rvalue of some other type, using unqualified function call swap() in the context where both

(1)

Defined in header

Queries the number of elements in a parameter pack

State state() const; (1)