scallop examples 2

example.scala

object Conf extends ScallopConf(List("-a","3","-b","5","tree")) {
  val apples = opt[Int]("apples")
  val bananas = opt[Int]("bananas")
  verify
}
Conf.apples() // 3
Conf.bananas.get // Some(5)

extractors-dirty.scala

object Conf extends ScallopConf(List("-a","3","-b","5","tree")) {
  val applesO = opt[Int]("apples")
  lazy val apples = apples.get.map(a => if (a > 3) "plenty" else "few").getOrElse("zero")
  val bananas = opt[Int]("bananas")
  val name = trailArg[String]()
  verify
  val bananasValue = bananas() + 3
}
Conf.apples // "few"
Conf.bananasValue // 8

huge conf object.scala

object Conf {
  var apples:Int = 0
  var bananas:Int = 0
}
// ... parsing options ...
Conf.apples = parser.getOption("option name", ...)
Conf.bananas = parser.getOption("other option name", ...)

option operations.scala

object Conf extends ScallopConf(List("-a","3","-b","5","tree")) {
  val apples = opt[Int]("apples").map(a => if (a > 3) "plenty" else "few").orElse(Some("zero"))
  val bananas = opt[Int]("bananas").map(3+)
  val name = trailArg[String]()
  verify
}
Conf.apples() // "few"
Conf.bananas() // 8