compare_predicate.h

#pragma once
 
 
 
 
 
template < typename ARG_TYPE >
class less_predicate_base :
   virtual public particle
{
public:
 
   virtual ::i32 less(ARG_TYPE a1, ARG_TYPE a2) = 0;
 
};
 
 
template < typename ARG_TYPE, typename PRED >
class less_predicate :
   public less_predicate_base < ARG_TYPE >
{
public:
 
 
   PRED m_predicate;
 
 
   less_predicate(PRED pred) : m_predicate(pred) {}
 
   virtual ::i32 less(ARG_TYPE a1, ARG_TYPE a2)
   {
 
      return m_predicate(a1, a2);
 
   }
 
};