RWTStack< T, C > Class Template Reference
[Traditional Collections]

Maintains a stack of values. More...

#include <rw/tstack.h>

List of all members.

Public Member Functions
void	clear ()
size_t	entries () const
bool	isEmpty () const
void	push (T a)
T	pop ()
T	top () const

---

Detailed Description

template<class T, class C>
class RWTStack< T, C >

Class RWTStack maintains a stack of values. Not only can the type of object inserted onto the stack be parameterized, but also the implementation of the stack.

Parameter T represents the type of object in the stack, either a class or built-in type. Class T must have:

• well-defined copy semantics (T::T(const T&) or equivalent)
• well-defined assignment semantics (T::operator=(const T&) or equivalent)
• any other semantics required by class C.

Parameter C represents the class used for implementation. Useful choices are RWTValOrderedVector<T,A> or RWTValDlist<T,A>. Class RWTValSlist<T,A> can also be used, but note that singly-linked lists are less efficient at removing the last item of a list (function pop()), because of the necessity of searching the list for the next-to-the-last item.

Synopsis

 #include <rw/tstack.h>
 RWTStack<T, C> stack;

Persistence

None

Examples

 #include <iostream>
 #include <rw/tstack.h>
 #include <rw/tvordvec.h>
 
 int main()
 {
     RWTStack<int, RWTValOrderedVector<int> > stack;
 
     stack.push(1);
     stack.push(5);
     stack.push(6);
 
     while (!stack.isEmpty())
         std::cout << stack.pop() << "\n";
 
     return 0;
 }

Program output:

 6
 5
 1

---

Member Function Documentation

template<class T, class C>

void RWTStack< T, C >::clear

(

void

)

[inline]

Removes all items from the stack.

template<class T, class C>

size_t RWTStack< T, C >::entries

(

void

)

const [inline]

Returns the number of items currently on the stack.

template<class T, class C>

bool RWTStack< T, C >::isEmpty

(

)

const [inline]

Returns true if there are currently no items on the stack, otherwise false.

template<class T, class C>

T RWTStack< T, C >::pop

(

)

[inline]

Pops (removes and returns) the item at the top of the stack.

Exceptions:

RWBoundsErr

Thrown if there are no items on the stack.

template<class T, class C>

void RWTStack< T, C >::push

(

T

a

)

[inline]

Pushes the item a onto the top of the stack.

template<class T, class C>

T RWTStack< T, C >::top

(

)

const [inline]

Returns (but does not remove) the item at the top of the stack.