Simple scala collection examples

gistfile1.scala

scala> (1 to 20).toList
res1: List[Int] = List(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)

//Simple side effects
scala> res1 take 3 foreach (i => println(i))
1
2
3

scala> res1 take 3 foreach println
1
2
3

//String representation
scala> (res1 take 3).toString
res9: String = List(1, 2, 3)

scala> (res1 take 3).mkString
res10: String = 123

scala> (res1 take 3).mkString(", ")
res11: String = 1, 2, 3

scala> (res1 take 3).mkString("[", ", ", "]")
res12: String = [1, 2, 3]