Date Ruby

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  4. With Dates downto method, count down five days, displaying each date as you go (this makes in-place changes to the date)
require 'date'
date = Date.new( 2006, 11, 8 )
date.downto( date - 5 ) { |date| puts date }
# date has changed
date.to_s # => "2007-11-03"