14km

Date manipulation

rubyquicktips:

You can add or subtract days or month from a Date object:

• +(n): add n number of days
• -(n): subtract n number of days
• >>(n): add n number of months
• <<(n): subtract n number of months

Here are some examples:

$ irb
>> date = Date.today     # => #<Date: ...>
>> date.to_s
=> "2010-01-26"
>> tomorrow = date + 1   # => #<Date: ...>
>> tomorrow.to_s
=> "2010-01-27"
>> nextmonth = date >> 1 # => #<Date: ...>
>> nextmonth.to_s
=> "2010-02-26"

Read the documentation for a more precise description.