High Order Functions

object Program  {
    def sum(n: Array[Int]) = {
        var s = 0
        for(j <- n)
            s += j
        s
    }
    def len(n: Array[Int]) = {
        var k = 0
        for(_ <- n)
            k += 1
        k
    }

    def bla(A: Array[Int], f: Array[Int] => Int) = f(A)

    def main(args: Array[String]) {
        val A = Array(1, 3, 5, 10, 15)
        println(bla(A, sum))
    }
}