Split Collection

gistfile1.scala

@tailrec
def splitHelper[T](l : List[T], b: ListBuffer[List[T]])(c: T => Boolean) : List[List[T]] = {
    l match {
        case Nil => b.result()
        case h :: t =>                        
            val (h, t) = l.tail.span(c)  
            b += l.head :: h ::: Nil
            splitHelper(t, b)(c)     
    }   
}

def split[T](l : List[T], b : ListBuffer[List[T]] = ListBuffer[List[T]]())(c: T => Boolean) = splitHelper(l, b)(c)