8 lines
234 B
Scala
8 lines
234 B
Scala
sealed trait List[+A]
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case class Cons[+A](head: A, tail: List[A]) extends List[A]
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case object Nil extends List[Nothing]
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object List {
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def apply[A](as: A*): List[A] =
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if (as.isEmpty) Nil else Cons(as.head, apply(as.tail: _*))
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}
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