Scala - implicit extension methods (pimp my library) using implict value classes

ImplicitExtensionMethods.scala

//------------------------------------------------------------------------
// Implicit Extension Methods a.k.a. Pimp My Library
//
// In a nutshell, this is about avoiding create instances of implicit
// classes which will live very shortly and later will be garbage
// collected, hurting hard performance in certain circumstances.
//
// More info:
//     http://docs.scala-lang.org/sips/completed/value-classes.html
//     http://docs.scala-lang.org/sips/completed/implicit-classes.html
//------------------------------------------------------------------------

package my.app

package object implicitsForTests {
  
  implicit class RichValue(val v: Int) extends AnyVal {
    def asFancyString: String = "{v}!!!"
  }
}