albodelu · September 21, 2017 04:56
diff --git a/ByDouble.kt b/ByDouble.kt
 class ByDouble(incrementer: Incrementer) : Incrementer by incrementer {

    override fun increment(number: Int): Int {
        return super.increment(number) * 2
    }
 }
diff --git a/ByTwo.kt b/ByTwo.kt
 class ByTwo : Incrementer {

    override val by: (Int) -> Int = { it + 2 }
 }
diff --git a/Incrementer.kt b/Incrementer.kt
 interface Incrementer {

    val by: (Int) -> Int

    fun increment(number: Int): Int {
        return by(number)
    }

 }
diff --git a/Usage.kt b/Usage.kt
 ByDouble(ByTwo()).increment(10)
 //devuelve 24 -> (10+2) * 2
	class ByDouble(incrementer: Incrementer) : Incrementer by incrementer {

	override fun increment(number: Int): Int {
	return super.increment(number) * 2
	}
	}
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