activesupport/lib/active_support/core_ext/fixnum/even_odd.rb


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module ActiveSupport #:nodoc:
  module CoreExtensions #:nodoc:
    module Fixnum #:nodoc:
      # For checking if a fixnum is even or odd. 
      # * 1.even? # => false
      # * 1.odd?  # => true
      # * 2.even? # => true
      # * 2.odd? # => false
      module EvenOdd
        def multiple_of?(number)
          self % number == 0
        end
        
        def even?
          multiple_of? 2
        end
        
        def odd?
          !even?
        end
      end
    end
  end
end