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Created June 2, 2016 06:24
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object InterpreterId extends (Instruction ~> Id) {
import Computations._
override def apply[A](fa: Instruction[A]): Id[A] = fa match {
case Forward(p, length) => forward(p, length)
case Backward(p, length) => backward(p, length)
case RotateLeft(p, degree) => left(p, degree)
case RotateRight(p, degree) => right(p, degree)
case ShowPosition(p) => println(s"showing position $p")
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