binary_negate (3C++std) - Tru64 UNIX
Standard C++ LibraryCopyright 1996, Rogue Wave Software, Inc.
NAME
binary_negate - Function object that returns the complement of the result
of its binary predicate
SYNOPSIS
#include <functional>
template<class Predicate>
class binary_negate ;
DESCRIPTION
binary_negate is a function object class that provides a return type for
the function adaptor not2. not2 is a function adaptor, known as a negator,
that takes a binary predicate function object as its argument and returns a
binary predicate function object that is the complement of the original.
Note that not2 works only with function objects that are defined as
subclasses of the class binary_function.
INTERFACE
template<class Predicate>
class binary_negate
: public binary_function<typename
predicate::first_argument_type,
typename
Predicate::second_argument_type,
bool>
{
public:
typedef typename binary_function<typename
Predicate::first_argument_type, typename
Predicate::second_argument_type, bool>::second_argument_type
second_argument_type;
typedef typename binary_function<typename
Predicate::first_argument_type, typename
Predicate::second_argument_type, bool>::first_argument_type
first_argument_type;
typedef typename binary_function<typename
Predicate::first_argument_type, typename
Predicate::second_argument_type, bool>::result_type
result_type;
explicit binary_negate (const Predicate&);
bool operator() (const first_argument_type&,
const second_argument_type&) const;
};
// Non-member Functions
template <class Predicate>
binary_negate<Predicate> not2 (const Predicate& pred);
CONSTRUCTOR
explicit binary_negate(const Predicate& pred);
Construct a binary_negate object from predicate pred.
OPERATOR
bool
operator()(const first_argument_type& x,
const second_argument_type& y) const;
Return the result of pred(x,y)
SEE ALSO
binary_function, not2, unary_negate
STANDARDS CONFORMANCE
ANSI X3J16/ISO WG21 Joint C++ Committee
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