std::logical_not

 

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Defined in header <functional>
template< class T > struct logical_not;

Function object for performing logical NOT (logical negation). Effectively calls operator! for type T.

Member types

Type	Definition
result_type	bool
argument_type	T

Member functions

operator()	returns the logical NOT of the argument (public member function)

std::logical_not::operator()

bool operator()( const T& arg ) const;

Returns the logical NOT of arg.

Parameters

arg

-

value to compute logical NOT of

Return value

The result of !arg.

Exceptions

(none)

Possible implementation

bool operator()(const T &arg) const { return !arg; }