CODEWITHSUNDEEP
scalaintellij-idea
Thibaud
Thibaud

Reputation: 89

Compilation issue of a Scala worksheet in IntelliJ

I have a worksheet containing 

object test {

  val tableTest = new Array[String](1)
  tableTest.length

}

that returns

tableTest: Array[String] = [Ljava.lang.String;@628c5fdf
res0: Int = 1

and it seems ok.

However, when I enter this worksheet:

object test {

  val tableTest = new Array[String](1)
  tableTest(0) = "zero"

}

IntelliJ cannot compile and returns me a Unable to read an event from: rO0ABXNyADdvcmcuamV0YnJhaW5zLmpwcy5pbmNyZW1lbnRhbC... error.

Did I do something wrong?

Upvotes: 1

Views: 970

Answers (1)

ktonga
ktonga

Reputation: 190

I'm having the same issue with latest Idea and Scala plugin.
It seems that the worksheet has a problem executing any line which evaluates to Unit. Assigning is Unit, that's why your tableTest(0) = "zero" fails.

I've temporarily solved it with the following workaround:

this line will fail with error Error:Unable to read an event from:...

println("Will fail")

You can fix it by defining this helper method and using it for any Unit expression:

def unit(f: => Unit): String = {f; ""}
unit(println("Will work"))

You just have to ignore the line it generates in the output panel with res0: String = You also can put this method in some object and import in any WS you need.

Gaston.
@ktonga

Upvotes: 1

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