compareDateTo method
Implementation
int compareDateTo(DateTime other) {
if (this.year > other.year)
return 1;
else if (this.year == other.year) if (this.month > other.month)
return 1;
else if (this.month == other.month) if (this.day > other.day)
return 1;
else if (this.day == other.day)
return 0;
else
return -1;
else
return -1;
else
return -1;
}