| using System;
[Serializable]
public class Date{
private ushort year;
private byte month, day;
private DayOfWeek nameOfDay; // Redundant
public Date(int year, int month, int day){
this.year = (ushort)year;
this.month = (byte)month;
this.day = (byte)day;
this.nameOfDay = (new DateTime(year, month, day)).DayOfWeek;
}
public Date(Date d){
this.year = d.year; this.month = d.month;
this.day = d.day; this.nameOfDay = d.nameOfDay;
}
public int Year{get{return year;}}
public int Month{get{return month;}}
public int Day{get{return day;}}
// return this minus other, as of usual birthday calculations.
public int YearDiff(Date other){
if (this.Equals(other))
return 0;
else if ((new Date(other.year, this.month, this.day)).IsBefore(other))
return this.year - other.year - 1;
else
return this.year - other.year;
}
public override bool Equals(Object obj){
if (obj == null)
return false;
else if (this.GetType() != obj.GetType())
return false;
else if (ReferenceEquals(this, obj))
return true;
else if (this.year == ((Date)obj).year &&
this.month == ((Date)obj).month &&
this.day == ((Date)obj).day)
return true;
else return false;
}
// Is this date less than other date
public bool IsBefore(Date other){
return
this.year < other.year ||
this.year == other.year && this.month < other.month ||
this.year == other.year && this.month == other.month && this.day < other.day;
}
public static Date Today{
get{
DateTime now = DateTime.Now;
return new Date(now.Year, now.Month, now.Day);}
}
public override string ToString(){
return string.Format("{0} {1}.{2}.{3}", nameOfDay, day, month, year);
}
} |