Re: stl function adapter to compare struct member

I've wondered if I'm missing something when I do searches in stl
collections, to find an element that has a member that has a certain
value. I don't want to have to write any special function object or
accessor function, there should be a function adaptor that takes a
member pointer (not a member function pointer.)

I tried to write one since I can't find this in the stl:

template<typename T, typename T2, T2 T::*ptr, T2 value>
class member_equal_to
{
public:
     bool operator()(const T& ref)
     {
        return (ref.*ptr == value);
     }
};

Now I can search for any struct member:

struct abc
{
     int x;
     int y;
};

int main()
{
     list<abc> mylist;
    ...
     mylist::iterator iter =
         find_if( mylist.begin(), mylist.end(),
member_equal_to<abc,int, &abc::y, 4>());
                           // look for item with y == 4
     ...
}
Is there a "right" way to do this?