Is it a leap year
class Time def Time.leap? year if year % 400 == 0 true elsif year % 100 == 0 false elsif year % 4 == 0 true else false end end
1. | You can see the difference in two Time objects by subtracting them: | ||
2. | Add seconds and multiples of seconds to add to a time with + | ||
3. | Doing Time Arithmetic | ||
4. | Finding the Day of the Week |