namespace utility
{
    using System;

    /// <summary>
    ///    An interface for a type to represent dates.
    /// </summary>
    interface Date: IComparable
    {
        /// <summary>
        /// <value>
        /// A property for accessing the Year part of the target date.
        /// </value>
        /// </summary>
        int Year 
        {
            get; set;
        }
        /// <summary>
        /// <value>
        /// A property for accessing the Month part of the target date.
        /// </value>
        /// </summary>
        int Month
        {
            get; set;
        }
        /// <summary>
        /// <value>
        /// A property for accessing the Day part of the target date.
        /// </value>
        /// </summary>
        int Day 
        {
            get; set;
        }
        /// <summary>
        /// A method for testing the equality of the values of
        /// the target date
        /// and the date <paramref name="pObject"/>. 
        /// </summary>
        /// <param name="pObject">
        /// The object with which to compare the target date.
        /// </param>
        /// <returns>
        /// Returns true if and only if the dates are the same.
        /// </returns>
        bool Equals(object pObject);
        /// <summary>
        /// A method for finding the hashcode of a date.
        /// </summary>
        /// <returns>
        /// Returns the hashcode.
        /// </returns>
        int GetHashCode();
        /// <summary>
        /// A method for providing a textual representation of a date.
        /// </summary>
        /// <returns>
        /// Returns a <see cref="string"/> giving the textual representation.
        /// </returns>
        string ToString();
    }
}