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mernen/gist:30200

Created November 29, 2008 06:28
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gistfile1.rb
# Feeling Lispy?
number = 1234
(def method_missing m ,s ,*a ,&b
(s.send m ,*a ,&b) end)
# Ruby 1.8.6 w/ ActiveSupport
(puts (reverse (join (collect (in_groups_of (reverse (Array (chars (String number)))) ,3) ,&:join) ,",")))
# Ruby 1.8.7+, no ActiveSupport dependency
(puts (reverse (join (collect (each_slice (reverse (Array (chars (String number)))) ,3) ,&:join) ,",")))
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