Scala For

原创转载请注明出处：http://agilestyle.iteye.com/blog/2333012

 

package org.fool.scala.basic

object ScalaFor extends App {
  var result = ""
  for (i <- 0 to 9)
    result += i + " "
  // 0 1 2 3 4 5 6 7 8 9
  println(result)

  result = ""
  for (i <- 0 until 10)
    result += i + " "
  // 0 1 2 3 4 5 6 7 8 9
  println(result)

  result = ""
  for (i <- Range(0, 10))
    result += i + " "
  // 0 1 2 3 4 5 6 7 8 9
  println(result)

  result = ""
  for (i <- Range(0, 20, 2))
    result += i + " "
  // 0 2 4 6 8 10 12 14 16 18
  println(result)

  var sum = 0
  for(i <- Range(0, 20, 2)) {
    println("adding " + i + " to " + sum)
    sum += i
  }

  println("sum is " + sum)
}

Console Output