Need to add "()" to imply discarded non-Unit value to suppress error when defining validator with DSL

[webblin034]

Library Dependencies :

libraryDependencies ++= Seq(
  "com.wix"                   %% "accord-core"                 % "0.7.6" % Test,
  "org.scalatest"             %% "scalatest"                   % "3.2.2"  % Test
)

Input Data :

case class InputData(
  id: String,
  name: Option[String] = None,
  description: Option[String] = None,
  items: Seq[String] = Seq.empty
)

Test Compilation Pass With () !

  implicit val inputDataValidator: Validator[InputData] = validator[InputData] { request =>
    request.id is notBlank
    request.name.mkString is notBlank
    request.description.mkString is notBlank
    request.items is notEmpty
    ()
  }

Test Compilation Failed Without () !

  implicit val inputDataValidator: Validator[InputData] = validator[InputData] { request =>
    request.id is notBlank
    request.name.mkString is notBlank
    request.description.mkString is notBlank
    request.items is notEmpty
  }

Test Compilation Error :

  [error]  discarded non-Unit value
  [error]  request.items is notEmpty
  [error]                ^
  [error]  one error found

[noam-almog]

i'm not sure what you are trying to achieve here