An option that forces the developer to ascribe the type to discard it

ValueDiscard.scala

/**
  * Function that allows values to be discarded in a visible way
  *
  * Thanks https://github.com/tabdulradi for the Trick
  */
object ValueDiscard {

  /**
    * Function that allows values to be discarded in a visible way.
    *
    * @tparam T type of the value that will be computed (it won't be inferred,
    *   must be specified)
    * @return function accepting value expression that needs to be computed and
    *   whose value will be discarded
    */
  def apply[T]: (=> T) => Unit = { value =>
    val _ = value
  }

  /**
    * This is not best practice. Developers who discard values should be asked
    * to exhibit they understand what happens by writing explicitly the type
    * of the discarded value.
    */
  def badDiscard[T](value: T): Unit = { val _ = value }

}