Comment on the mechanism for parameter-passing in the programming language Scala. You may wish to consider the following two code samples. def while loop( cond: => Boolean )( comm: => Unit ) { if( cond ) comm; while loop( cond )( comm ) } def qsort[T]( xs: Array[T] )( implicit o: Ord[T] ): Array[T] = if( xs.length x.lt(x,pivot)) ) , xs filter (x => x == pivot ) , qsort( xs filter (x => x.lt(pivot,x)) ) ) }