Man Page greater.3

                       Standard C++ Library
             Copyright 1998, Rogue Wave Software, Inc.



      - A binary function object that returns true if  its  first
     argument is greater than its second.


     #include <functional>
     template <class T>
     struct greater : binary_function<T, T, bool> {
      bool operator() (const T&, const T&) const;


     greater is a binary function object. Its operator()  returns
     true  if  x is greater than y. You can pass a greater object
     to any algorithm that requires a binary function. For  exam-
     ple,  the  transform algorithm applies a binary operation to
     corresponding values  in  two  collections  and  stores  the
     result  of the function. greater would be used in that algo-
     rithm in the following manner:

     vector<int> vec1;
     vector<int> vec2;
     vector<int> vecResult;
     transform(vec1.begin(), vec1.end(),
              vec2.begin(), vecResult.begin(), greater<int>());


     After this call to transform, vecResult(n) contains a  1  if
     vec1(n)  was greater than vec2(n) or a 0 if vec1(n) was less
     than or equal to vec2(n).

     If your compiler does not support default  template  parame-
     ters,  then you always need to supply the Allocator template
     argument. For instance, you have to write:

     vector<int, allocator<int> >
     instead of


     If your compiler does not support namespaces,  then  you  do
     not need the using declaration for std.