vaclavpich
10/28/2008 7:20:00 PM
Hi all,
I want to know your opinion about my implemetaion of priority queue. I
couldn't use std::priority_queue so I've written my. I designed two
kinds of interface but I'm not sure that this is good idea.
Please write me what do you think about this :
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// 1) first class is similar to std::priority_queue
template<
class _Ty,
class _Predicate = Less<_Ty>, // comparator
class _Container = Array<_Ty> // like std::vector
>
class PriorityQueuePolicy
{
_Container m_c;
public:
// common interface like std::priority_queue
void push(const _Ty& val);
_Ty& top();
void pop();
};
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// 2) this class has only pop and push
template<
class _Ty,
class _Predicate = Less<_Ty>, // comparator
class _Container = Array<_Ty> // like std::vector
>
class PushPopPolicy : protected PriorityQueuePolicy<_Ty, _Predicate,
_Container >
{
typedef PriorityQueuePolicy<_Ty, _Predicate, _Container > base;
public:
// common interface like std::priority_queue
void push(const _Ty& val){
base::push(val);
}
_Ty pop(){
if( base::empty()) throw exception;
_Ty val = base::top();
base::pop();
return val;
}
};
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//
template<
class _Ty,
class _Predicate = Less<_Ty>,
class _Container = Array<_Ty>
class _Policy = PriorityQueuePolicy<_Ty, _Predicate, _Container >
>
class PriorityQueue : public _Policy {};
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Thanks