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class DoNotDisturb
def initialize
@desk = InformationDesk.new
end
def method_missing(name, *args)
unless name.to_s == "emergency"
hour = Time.now.hour
raise "Out for lunch" if hour >= 12 && hour < 14
end
@desk.send(name, *args)
end
end
 
# At 12:30...
DoNotDisturb.new.emergency # => "emergency() called"
DoNotDisturb.new.flights # ~> -:37:in `method_missing': Out for lunch (RuntimeError)
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