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Scala example source code file (MonadTellSyntax.scala)

This example Scala source code file (MonadTellSyntax.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

monadsyntax, monadtellops, monadtellsyntax, tomonadops, tomonadtellops

The MonadTellSyntax.scala Scala example source code

package scalaz
package syntax

/** Wraps a value `self` and provides methods related to `MonadTell` */
final class MonadTellOps[F[_], S, A] private[syntax](self: F[A])(implicit val F: MonadTell[F, S]) {

  final def :++>(w: => S): F[A] = F.bind(self)(a => F.map(F.tell(w))(_ => a))

  final def :++>>(f: A => S): F[A] =
    F.bind(self)(a => F.map(F.tell(f(a)))(_ => a))


trait ToMonadTellOps extends ToMonadOps {
  implicit def ToMonadTellOps[F[_], S, A](v: F[A])(implicit F0: MonadTell[F, S]) =
    new MonadTellOps[F, S, A](v)



trait MonadTellSyntax[F[_], S] extends MonadSyntax[F] {
  implicit def ToMonadTellOps[A](v: F[A]): MonadTellOps[F, S, A] =
    new MonadTellOps[F, S, A](v)(MonadTellSyntax.this.F)

  def F: MonadTell[F, S]


Other Scala examples (source code examples)

Here is a short list of links related to this Scala MonadTellSyntax.scala source code file:

my book on functional programming


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