Scala way to program bunch of if's

Question

I\'m starting out with scala, and trying to apply the functional way to it, but I came out with bunch of nested if\\else constructions which is hard to read, and I wonder is

Answer 1

It might be nicer to write it as a fold:

def balance(chars: List[Char]): Boolean = chars.foldLeft(0){
  case (0, ')') => return false
  case (x, ')') => x - 1
  case (x, '(') => x + 1
  case (x, _  ) => x
} == 0