Move DateTime : Date Calculation « Date « Ruby

  1. Ruby
  2. Date
  3. Date Calculation




Move DateTime


require 'date'

puts y2k_dt = DateTime.new(2000, 1, 1)
puts (y2k_dt >> 1).to_s                          # => "2000-02-01T00:00:00Z"
puts (y2k_dt << 1).to_s                          # => "1999-12-01T00:00:00Z"

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1.Subtract 61 days from a date:
2.Add and subtract six months using the >> and << methods.
3.Doing Date Arithmetic
4.Doing DateTime Arithmetic
5.Minus one DateTime from another
6.leap year day
7.Counting the Days Since an Arbitrary Date
8.advent calendar
9.Minus DateTime by day
10.Remaining days