vendor/rails/activesupport/lib/active_support/core_ext/integer/even_odd.rb

   1 module ActiveSupport #:nodoc:
   2   module CoreExtensions #:nodoc:
   3     module Integer #:nodoc:
   4       # For checking if a fixnum is even or odd.
   5       #
   6       #   2.even?  # => true
   7       #   2.odd?   # => false
   8       #   1.even?  # => false
   9       #   1.odd?   # => true
  10       #   0.even?  # => true
  11       #   0.odd?   # => false
  12       #   -1.even? # => false
  13       #   -1.odd?  # => true
  14       module EvenOdd
  15         def multiple_of?(number)
  16           self % number == 0
  17         end
  18
  19         def even?
  20           multiple_of? 2
  21         end if RUBY_VERSION < '1.9'
  22
  23         def odd?
  24           !even?
  25         end if RUBY_VERSION < '1.9'
  26       end
  27     end
  28   end
  29 end