Scala example source code file (MonadReader.scala)

This example Scala source code file (MonadReader.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.

Learn more about this Scala project at its project page.

Java - Scala tags/keywords

monadreader

The MonadReader.scala Scala example source code

package scalaz

////
/**
 *
 */
////
trait MonadReader[F[_], S] extends Monad[F] { self =>
  ////

  def ask: F[S]
  def local[A](f: S => S)(fa: F[A]): F[A]
  def scope[A](k: S)(fa: F[A]): F[A] = local(_ => k)(fa)
  def asks[A](f: S => A): F[A] = map(ask)(f)

  ////

}

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

  ////

  ////
}