score:8

Accepted answer

I think this is what you want:

object Test {
  println("This does not print!") 
  add(5, 6)

  println("This however prints!")
  add(5, 6)

  def add(a: Int, b: Int): Int = a + b
}

How the worksheet works is, that if you define an object and nothing defined outside the object scope, it will execute it as Test extends App. Which is what the intellij page displays

If you have any statement outside the object scope, it is then treated as any other object and compiler will initialize it like anything else. This is what you are experiencing.

score:9

The scala worksheet executes the contents of the object test{....} if all the code is inside that object. If there is some code outside the object, it will just define that Test object (and not run it).

object Test {
  println("This does not print!")
  def add(a: Int, b: Int): Int = {print("Sum:" + a + b); a + b}
  add(2, 2)
}

// defined the above Test object

Test // executes the Test object

score:15

I was able to evaluate the Scala work sheet by changing the Scala worksheet settings.

  • change run type to plain (original it was REPL)

You can get to settings by clicking the settings icon on the Scala worksheet.


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