less_equal(3C++) - less_equal(3C++)
Standard C++ Library Copyright 1998, Rogue Wave Software, Inc.
NAMEless_equal
- A binary function object that returns true if its first argument is
less than or equal to its second.
SYNOPSIS
#include<functional>
template <class T>
struct less_equal : public binary_function<T, T, bool>;
DESCRIPTIONless_equal is a binary function object. Its operator() returns true if
x is less than or equal to y. You can pass a less_equal object to any
algorithm that requires a binary function. For example, the sort algo‐
rithm can accept a binary function as an alternate comparison object to
sort a sequence. less_equal would be used in that algorithm in the fol‐
lowing manner:
vector<int> vec1;
sort(vec1.begin(), vec1.end(),less_equal<int>());
After this call to sort, vec1 is sorted in ascending order.
INTERFACE
template <class T>
struct less_equal : binary_function<T, T, bool> {
bool operator() (const T&, const T&) const;
};
WARNINGS
If your compiler does not support default template parameters, then you
always need to supply the Allocator template argument. For instance,
you have to write:
vector<int, allocator<int> >
instead of
vector<int>
If your compiler does not support namespaces, then you do not need the
using declaration for std.
SEE ALSO
binary_function, Function_Objects
Rogue Wave Software 02 Apr 1998 less_equal(3C++)
