How to run a Scala script within IntelliJ IDEA?

Question

Here is a trivial scala script:

object test {
  def hi() { print(\"hi there from here\") }
}


test.hi()

From the command line it does the expe

Answer 1

Your code works in command line because it is "script", when you want to make it runnable in project there are ways to do it:

1. By creating object which extends App

   object test {
       def hi() { print("hi there from here") }
   }
   
   object runnable extends App {
       test.hi()
   }
   

2. or java-like solution i.e. creating main method

   object test {
       def hi() { print("hi there from here") }
   }
   
   object runnable {
       def main(args: Array[String]) {
           test.hi()
       }
   }
   

3. when need to execute as script - I do it like that: select code to execute by mouse, then choose from context menu "Send Selection To Scala Console"