The following code example is taken from the book
C++ Templates - The Complete Guide, 2nd Edition
by David Vandevoorde, Nicolai M. Josuttis, and Douglas Gregor,
Addison-Wesley, 2017
© Copyright David Vandevoorde, Nicolai M. Josuttis, Douglas Gregor 2017
#include "stack1.hpp"
// partial specialization of class Stack<> for pointers:
template<typename T>
class Stack<T*> {
private:
std::vector<T*> elems; // elements
public:
void push(T*); // push element
T* pop(); // pop element
T* top() const; // return top element
bool empty() const { // return whether the stack is empty
return elems.empty();
}
};
template<typename T>
void Stack<T*>::push (T* elem)
{
elems.push_back(elem); // append copy of passed elem
}
template<typename T>
T* Stack<T*>::pop ()
{
assert(!elems.empty());
T* p = elems.back();
elems.pop_back(); // remove last element
return p; // and return it (unlike in the general case)
}
template<typename T>
T* Stack<T*>::top () const
{
assert(!elems.empty());
return elems.back(); // return copy of last element
}