29 lines
617 B
Kotlin
29 lines
617 B
Kotlin
// version 1.1.4
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class HistoryVariable<T>(initialValue: T) {
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private val history = mutableListOf<T>()
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var currentValue: T
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get() = history[history.size - 1]
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set(value) {
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history.add(value)
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}
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init {
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currentValue = initialValue
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}
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fun showHistory() {
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println("The variable's history, oldest values first, is:")
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for (item in history) println(item)
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}
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}
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fun main(args: Array<String>) {
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val v = HistoryVariable(1)
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v.currentValue = 2
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v.currentValue = 3
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v.showHistory()
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println("\nCurrentvalue is ${v.currentValue}")
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}
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