greater_equal (3C++std) - Tru64 UNIX
Standard C++ LibraryCopyright 1996, Rogue Wave Software, Inc. NAME
greater_equal - Binary function object that returns true if its first
argument is greater than or equal to its second
SYNOPSIS
#include <functional>
template <class T>
struct greater_equal ; : binary_function<T, T, bool> {
typedef typename binary_function<T, T, bool>::second_argument_type
second_argument_type;
typedef typename binary_function<T, T, bool>::first_argument_type
first_argument_type;
typedef typename binary_function<T, T, bool>::result_type
result_type;
bool operator() (const T&, const T&) const;
};
DESCRIPTION
greater_equal is a binary function object. Its operator() returns true if
x is greater than or equal to y. You can pass a greater_equal object to
any algorithm that requires a binary function. For example, the sort
algorithm can accept a binary function as an alternate comparison object to
sort a sequence. greater_equal would be used in that algorithm in the
following manner:
vector<int> vec1;
sort(vec1.begin(), vec1.end(),greater_equal<int>());
After this call to sort, vec1 will be sorted in descending order.
WARNINGS
If your compiler does not support default template parameters, then you
need to always supply the Allocator template argument. For instance,
you'll have to write :
vector<int, allocator<int> >
instead of
vector<int>
SEE ALSO
function objects
STANDARDS CONFORMANCE
ANSI X3J16/ISO WG21 Joint C++ Committee
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