Scala example source code file (type-diagnostics.scala)

This example Scala source code file (type-diagnostics.scala) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Scala tags/keywords

map, map, toomanyparens, toomanyparens

The Scala type-diagnostics.scala source code

object TooManyParens {
  def f = Map(1 -> 2).keySet()
  //
  // Confusion reigns!
  //
  // work/a.scala:27: error: not enough arguments for method apply: (elem: Int)Boolean in trait SetLike.
  // Unspecified value parameter elem.
  //   def f = Map(1 -> 2).keySet()
  //                             ^
  
}