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progs/app04.scala
author Christian Urban <christian dot urban at kcl dot ac dot uk>
Mon, 20 Jul 2020 10:06:43 +0100
changeset 735 fc2e3609d5e5
parent 520 2849c305b12d
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Christian Urban <christian dot urban at kcl dot ac dot uk>
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abstract class Val
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case object Empty extends Val
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case class Chr(c: Char) extends Val
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case class Sequ(v1: Val, v2: Val) extends Val
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case class Left(v: Val) extends Val
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case class Right(v: Val) extends Val
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case class Stars(vs: List[Val]) extends Val
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case class Rec(x: String, v: Val) extends Val
afl-material