progs/roman.scala
author Christian Urban <christian dot urban at kcl dot ac dot uk>
Wed, 25 Jan 2017 01:25:17 +0000
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abstract class RomanDigit 
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case object I extends RomanDigit 
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case object V extends RomanDigit 
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case object X extends RomanDigit 
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case object L extends RomanDigit 
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case object C extends RomanDigit 
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case object D extends RomanDigit 
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case object M extends RomanDigit