📄 stackexercise.cs
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/**
* Excerpted from the book, "Pragmatic Unit Testing in C# with NUnit, 2nd Ed."
* ISBN 0-9776166-7-3
* Copyrights apply to this code. It may not be used to create training material,
* courses, books, articles, and the like. Contact us if you are in doubt.
* We make no guarantees that this code is fit for any purpose.
* Visit http://www.pragmaticprogrammer.com/titles/utc2 for more book information.
*/
using System;
public interface StackExercise {
/// <summary>
/// Return and remove the most recent item from
/// the top of the stack.
/// </summary>
/// <exception cref="StackEmptyException">
/// Throws exception if the stack is empty.
/// </exception>
String Pop();
/// <summary>
/// Add an item to the top of the stack.
/// </summary>
/// <param name="item">A String to push
/// on the stack</param>
void Push(String item);
/// <summary>
/// Return but do not remove the most recent
/// item from the top of the stack.
/// </summary>
/// <exception cref="StackEmptyException">
/// Throws exception if the stack is empty.
/// </exception>
String Top();
/// <summary>
/// Returns true if the stack is empty.
/// </summary>
bool IsEmpty();
}
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