Revision: 15035
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at June 22, 2009 05:01 by wdso
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# How to define and use a singleton class
# - modifies the class's class
# - instance methods in the singleton class are class methods externally
class TheClass
class << self
def hello
puts "hi"
end
end
end
# invoke a class method
TheClass.hello # hi
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Singleton classes
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Ruby