Scala example source code file (Choice.scala)

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

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Java - Scala tags/keywords

category, choice

The Choice.scala Scala example source code

package scalaz

////
/**
 *
 */
////
trait Choice[=>:[_, _]] extends Category[=>:] { self =>
  ////
  def choice[A, B, C](f: => A =>: C, g: => B =>: C): (A \/ B) =>: C


  // derived functions

  def codiagonal[A]: (A \/ A) =>: A = choice(id, id)

  ////
  val choiceSyntax = new scalaz.syntax.ChoiceSyntax[=>:] { def F = Choice.this }
}

object Choice {
  @inline def apply[F[_, _]](implicit F: Choice[F]): Choice[F] = F

  ////
  ////
}