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@hyone
Created May 29, 2011 08:24
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Accumulator by Scala
object Accumulator {
def accumulator(n: Int): Int => Int = {
var i = n
(x: Int) => { i += x; i }
}
def main(args: Array[String]) {
val acc = accumulator(0)
(1 to 5).foreach { i => println(acc(i * 2)) }
}
}
// $ scalac Accumulator.scala
// $ scala Accumulator
// 2
// 6
// 12
// 20
// 30
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