Scala's violations of the principle of least surprise

wat.scala

{} + "" == "()" // true

pow(2, 31).intValue + 1 > 0 // false

Set(1,2,3).sameElements(Set(3,2,1)) // false

Some(null).get // No exception :(, Some(null) should result in a None IMO

// Option objects might be null!!!
def safeOption(shouldBeSafe : Option[String]) : String = {
  if (shouldBeSafe.isDefined) {
    return "Yep its safe"
  } else {
    return "No, it was not"
  }
}
safeOption(null) // BOOM java.lang.NullPointerException :(

// Somes can hold Nones inside them :(, have to use flatMap to remove
Map("a" -> "b").get("a").map(x => Try(x.toInt).toOption) == Some(None)