Scala example source code file (t3511.scala)

This example Scala source code file (t3511.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

array, array, list, list, test, test

The Scala t3511.scala source code

import scala.collection.immutable._


// ticket #3511
object Test {
  
  def main(args: Array[String]) {
    assert(Stream.from(0).view.force.take(5) == List(0, 1, 2, 3, 4))
    
    val s = Stream.from(0)
    val smap = s.view.map(_ * 2).force.take(5)
    assert(smap == List(0, 2, 4, 6, 8))
    
    val sfilter = s.view.filter(_ % 2 == 0).force.take(5)
    assert(sfilter == List(0, 2, 4, 6, 8))
    
    val sflatmap = s.view.flatMap(n => List(n, n * 2)).force.take(6)
    assert(sflatmap == List(0, 0, 1, 2, 2, 4))
    
    val stakewhile = s.view.takeWhile(_ < 10).force
    assert(stakewhile == List.range(0, 10))
    
    val szip = s.view.zip(s.map(_ / 2)).force.take(5)
    assert(szip == List((0, 0), (1, 0), (2, 1), (3, 1), (4, 2)))
    
    val szipall = s.view.zipAll(List(0, 1, 2), 0, 0).force.take(5)
    assert(szipall == List((0, 0), (1, 1), (2, 2), (3, 0), (4, 0)))
    
    val spatch = s.view.patch(1, List(5, 5, 5), 5).force.take(5)
    assert(spatch == List(0, 5, 5, 5, 6))
  }
  
}