gist: 81211


  
    
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              $ ruby key_tester.rb 
Press a key to view the corresponding ASCII code(s) (or CTRL-X to exit).
=> key_tester.rb:18:in `to_s': wrong number of arguments(1 for 0) (ArgumentError)
	from key_tester.rb:18:in `block in <main>'
	from key_tester.rb:10:in `loop'
	from key_tester.rb:10:in `<main>'
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