Split string by 2 characters in Scala - simple, functional, great :)

gistfile1.txt

def spl(s:String) : List[String] = {
  if (s.length>0) {
    val x = s.splitAt(2)
    x._1 :: spl(x._2)
  } else Nil
}

val  x = spl("010203")

>>>> x: List[String] = List(01, 02, 03)

// a @tailrec version

import scala.annotation.tailrec

def spl(expr: => String) = {
@tailrec
def iter(s: String, acc: List[String]): List[String] = {
if (s.length == 0) acc
else {
val x = s.splitAt(2)
iter(x._2, acc ++ List(x._1))
}
}
iter(expr, Nil)
}

spl("xxyyzz")