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samullen/last_day_of_month.rb

Created April 30, 2010 14:01
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find the last day of the month
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last_day_of_month.rb
require 'date'
(Date.new(year, 12, 31) << (12-month)).day # Ruby 1.8.x
Date.new(2010, 12, 31).prev_month(12 - 4).day # Ruby 1.9.x
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