Suppress “discarded non-Unit value” warning

May 11, 2023 by Tarik

You suppress these warning by explictly returning unit (that is ()).
By example turn this:

def method1() = {
   println("Hello")
   "Bye"
}
def method2() {
  method1() // Returns "Bye", which is implicitly discarded
}

into:

def method1() = {
   println("Hello")
   "Bye"
}
def method2() {
  method1()
  () // Explicitly return unit
}