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Category: Programming
Level: Beginner to seasoned
900 pages
ISBN-10 097661322-0
ISBN-13 978-097661322-0
$59.99 USA
$79.99 CANADA


Listing 13-3 extracted from chapter Generics


Listing 13-2<     > Listing 13-4


This listing can be compiled with the command line:
csc.exe /target:exe Example_13_3.cs
Errors: 1 Warnings: 0


Example_13_3.cs
class Stack<T>{
   private T[] m_ItemsArray;
   private int m_Index = 0;
   public const int MAX_SIZE = 100;
   public Stack(){ m_ItemsArray = new T[MAX_SIZE]; }
   public T Pop(){
      if (m_Index ==)  
         throw new System.InvalidOperationException(
            "Can't pop an empty stack.");
      return m_ItemsArray[--m_Index];
   }
   public void Push(T item) {
      if(m_Index == MAX_SIZE)  
         throw new System.StackOverflowException(
            "Can't push an item on a full stack.");   
      m_ItemsArray[m_Index++] = item;
   }
}
class Program{
   static void Main(){
      Stack<int> stack = new Stack<int>();
      stack.Push(1234);
      int number = stack.Pop(); // Don't need any awkward cast.
      stack.Push(5678);
      string sNumber = stack.Pop();   // Compilation Error:
           // Cannot implicitly convert type 'int' to 'string'.
   }
}	
Copyright Patrick Smacchia 2006 2007