Andrey Breslav
26 lines
515 B
Plaintext
26 lines
515 B
Plaintext
enum class List<out T>(theSize : Int) : IList<T> {
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Nil : List<Nothing>(0)
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Cons<T>(val value : T, val tail : List<T>) : List<T>(1 + tail.size)
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override val size : Int
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get() = theSize
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override val isEmpty : Boolean
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get() = this == Nil
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override fun iterator() = object IIterator() {
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private var current = List.this
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override val hasNext
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get() = current == Nil
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override fun next() {
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val result = current.value
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current = current.tail
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return result
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}
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}
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} |