Syntax:

  template <class Operation, class T>
    binder2nd<Operation> bind2nd (const Operation& op, const T& x);

bind the second argument of the binary function.

For example:

#include <iostream>
using std::cout;
using std::endl;
using std::boolalpha;
#include <algorithm>
using std::transform;
#include <functional>
using std::bind2nd;
using std::less;
 
int main(int argc, char **argv) {
  int a1[]={0,1,2,3,4,5};
  const size_t SIZE=sizeof(a1)/sizeof(*a1);
  bool is_less[SIZE]={false};
  transform(a1,a1+SIZE,is_less,bind2nd(less<int>(),3));
  for(size_t i=0;i<SIZE;i++){
    cout<<a1[i]<<" < 3 :"<<boolalpha<<is_less[i]<<endl;;
  }
  return EXIT_SUCCESS;
}