E050: Method Does Not Take Parameters

This error is emitted when you try to pass arguments to a method or expression that doesn't accept parameters.

This can happen when:

Calling a nullary method (no parameter list) with arguments
Calling a method with more argument lists than it accepts
Applying arguments to an expression that is not a function

Example

scala

object Hello
val message = Hello("World")

Error

scala

-- [E050] Type Error: example.scala:2:14 ---------------------------------------
2 |val message = Hello("World")
  |              ^^^^^
  |              object Hello does not take parameters
  |-----------------------------------------------------------------------------
  | Explanation (enabled by `-explain`)
  |- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  | You have specified more parameter lists than defined in the method definition(s).
   -----------------------------------------------------------------------------

Solution

scala

// Enusre that method you want to call exists, especially if it involved Scala syntax desugaring
object Hello:
  def apply(value: String) = ???
val message = Hello("World")

scala

// Enusre that that method actually takes arguments list
class Bag extends scala.reflect.Selectable

def example =
  val bag = new Bag:
    val f1 = 23

  val x = bag.f1 // instead of bag.f1()

<aside class="warning"> This reference page was created with LLM assistance - the description of the error code may not be accurate or cover all possible scenarios. </aside>