C++ converting to template classes (operator errors and such)

[BaloneyOs]

EDIT: I fixed mostly everything and now I just have the following two errors in my AnyList.cpp file, though I'm not entirely sure if they're template related.

1. 'operator =' is ambiguous
2. unary '++': 'std:string' does not define this operator or a conversion to a type acceptable to the predefined operator.

So for these classes I'm supposed to convert the Node and AnyList classes (both in the AnyList files) to template classes. I've done what I know I can do so far.

AnyList.h

#ifndef ANYLIST_H
#define ANYLIST_H

#include<iostream>
#include <string>           
using namespace std;

template<class T>
class Node
{
public:
	Node() : data(0), next(NULL) {}
	Node(const T& theData, Node *newNext) : data(theData), next(newNext){}
	Node* getNext() const { return next; }
	const T& getData( ) const { return data; }
    void setData(const T& theData) { data = theData; }
	void setNext(Node *newNext) { next = newNext; }
	~Node(){}
private:
    T data;     
    Node *next; //pointer that points to next node
};

template<typename T>
class AnyList
{   
    template<typename T>
    friend ostream& operator<<(ostream& out, const AnyList<T>& theList);

public:
    AnyList();  

    void insert(const T& elem);

    T getNumOfElem() const;

    void destroyList();

    ~AnyList();

private:
    Node<T> *first;
    T count;        
};

#endif 

AnyList.cpp

#include "AnyList.h"

template<typename T>
ostream& operator<<(ostream& out, const AnyList<T>& theList)
{
	if (theList.first == NULL)
		out << "List is empty." << endl;
	else
	{
		Node<T> *temp = theList.first;

		while (temp != NULL)
		{
			out << temp->getData() << " ";
			temp = temp->getNext();
		}
	}

	return out;
}

template<typename T>
AnyList<T>::AnyList()
{
	first = NULL;
	count = 0;
}

template<typename T>
void AnyList<T>::insert(const T& elem)
{	
	Node<T> *newNode = new Node<T>(elem, nullptr);

	if (first == nullptr)
		first = newNode;
	else
	{
		Node<T> *temp = first;
		while (temp->getNext() != nullptr)
			temp = temp->getNext();
		temp->setNext(newNode);
	}

	++count;
}

template<typename T>
T AnyList<T>::getNumOfElem() const
{
	return count;
}

template<typename T>
void AnyList<T>::destroyList()
{ 
	Node<T>  *temp = first;
	
	while (temp != NULL)
    {
		first = first->getNext();
        delete temp;
		temp = first;
    }

	count = 0;
}

template<typename T>
AnyList<T>::~AnyList()
{
	destroyList();
}

Main.cpp

#include "AnyList.h"

#include <iostream>
using namespace std;

void testInt();
void testDouble();
void testString();

int main()
{
    testInt();
    cout << endl;
    testDouble();
    cout << endl;
    testString();
    cout << endl;
    testPair();
    cout << endl;

    cout << endl;
    system("Pause");
    return 0;
}

void testInt()
{
    AnyList<int> list1, list2, list3;

    list1.insert(10);
    list1.insert(11);
    list1.insert(12);
    list1.insert(13);
    list1.insert(14);

    list2.insert(5);
    list2.insert(3);
    list2.insert(9);

    list3.insert(78);

    cout << "TEST: Ostream operator <<\n\n";
    cout << "\tList1 is: " << list1 << endl;
    cout << "\tList2 is: " << list2 << endl;
    cout << "\tList3 is: " << list3 << endl;

}

void testDouble()
{
    AnyList<double> list1, list2, list3;

    list1.insert(10.9);
    list1.insert(11.4);
    list1.insert(12.3);
    list1.insert(13.5);
    list1.insert(14.1);

    list2.insert(5.8);
    list2.insert(3.7);
    list2.insert(9.4);

    list3.insert(78.2);

    cout << "TEST: Ostream operator <<\n\n";
    cout << "\tList1 is: " << list1 << endl;
    cout << "\tList2 is: " << list2 << endl;
    cout << "\tList3 is: " << list3 << endl;
}

void testString()
{
    AnyList<string> list1, list2, list3;

    list1.insert("What");
    list1.insert("a");
    list1.insert("beautiful");
    list1.insert("day");
    list1.insert("!");

    list2.insert("Isn't");
    list2.insert("it");
    list2.insert("?");

    list3.insert("Yes!");

    cout << "TEST: Ostream operator <<\n\n";
    cout << "\tList1 is: " << list1 << endl;
    cout << "\tList2 is: " << list2 << endl;
    cout << "\tList3 is: " << list3 << endl;
}

The AnyList.cpp and AnyList.h files originally didn't have any templates on them. Everything template related in those two files are what I added but I still have those two errors (again, not sure if template related).

Thanks!

[gunnerfunner]

With reference to your post above could you tell us on which lines of AnyList.cpp the 2 errrors mentioned appear?

[jlb]

When dealing with templates both the definition and the implementation must be in the same compilation unit, your implementations are not in the same compilation unit.

[gunnerfunner]

Good point!