Is non-local return in Scala new?

Question

A colleague just showed me this and I was surprised that it compiled at all:

def toUpper(s: Option[String]): String = {
  s.getOrElse(return \"default\").toU         


        

Answer 1

It's been allowed since forever, more or less. It might look strange there, but there are many places where the reverse would be true. For example:

// excessive use of braces for the sake of making scopes clearer

def findFirst[A](l: List[A])(p: A => Boolean): Option[A] = {
    for (x <- l) {
        if (p(x)) return Some(x)
    }
    None
}