whichismorereadable.scala

// Which of f or g are more readable, and if possible, why?

def f(x: Seq[Int]): Int =
  x.toList match {
    case Nil => 99
    case lst => lst.sum
  }

def g(x: Seq[Int]): Int =
  x.toList match {
    case Nil => 99
    case lst@(_::_) => lst.sum
  }

The less noise the better, so the answer is f.
For what "readability" arguments are concerned, the real question is often how much is the reader familiar.

I agree less noise the better, hence the answer is g.

Yeah, I didn't take overlapping into account. It's subtly deceptive.