Namespace within a class

Hi guys,

I'm having trouble getting a namespace to work from within a class definition. I'm not entirely sure this is possible, but the ultimate goal is to create an object and pass it one of the enumerated values in its constructor. I've tried doing an it as below, but the compiler does not like that route.

If I take out the namespace statement, then, in the main driver, I can create an object by calling pqueue test(pqueue::FIFO) (or any of the other three values)... Is there a way to do this with namespaces, so I can simply call pqueue test(FIFO)?

Thanks!!

-Max

class definintion - printQueue.h

Code:

---

#include <iostream>

using namespace std;

class pqueue
{
public:
        namespace p
        {
        enum pTypes {FIFO, JOBSIZE, PRIORITY}; //used for naming which type of printer
        }
       
        pqueue(pTypes type);
       
private:
        pTypes printer_type;                                //which type of printer this is
        job *front;                                                        //front of the queue
        job *back;                                                        //end of the queue

};

---

Class implementation - printQueue.cpp

Code:

---

#include <iostream>
#include "printQueue.h"

using namespace std;

pqueue::pqueue(pTypes type)
{
        printer_type = type;
        front = NULL;
        back = NULL;
}

---

Program driver -- test.cpp

Code:

---

#include <iostream>
#include "printQueue.h"

using namespace std;
using namespace p;

int main()
{
        pqueue test(FIFO);

}

---

Quote:

---

Originally Posted by maxsthekat

If I take out the namespace statement, then, in the main driver, I can create an object by calling pqueue test(pqueue::FIFO) (or any of the other three values)... Is there a way to do this with namespaces, so I can simply call pqueue test(FIFO)?

---

Yes. Put the enum outside the class completely.

The syntax you want, where you can only say "FIFO" during a constructor call but not anywhere else, is not possible. It's all or nothing.

If you do not want the enum to be in the namespace of the class, you could define it in a separate namespace and thus use a using directive to get your desired effect (or just dump it in the global namespace to begin with, but that may not be advisable).

Works great. Thanks guys :)

You may also review your policy of including <iostream> in every file, followed by using namespace std; ;)