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/gist:3123963

Created July 16, 2012 17:43
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Ruby singleton
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gistfile1.rb
#!/usr/bin/env ruby
class Dog
@@instance = nil
def self.get_instance
@@instance = self unless @@instance
end
def self.say
puts "Bark"
end
end
dog_instance = Dog::get_instance
dog_instance.say
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