def scan(p: String)(f: String => Unit) = {
  var s:java.util.Scanner = null
  try {
    s = new java.util.Scanner(new java.io.File(p))
    while(s.hasNextLine) {
      f(s.nextLine)
    }
  } finally {
    s.close
  }
}

val sfn = (s: String) => println("scanning %s" format s)
val cfn = (s: String) => println("line len %s" format s.length)
val s = scan("test.txt")_

println s(sfn)
println s(cfn)