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Scala example source code file (ArrowSyntax.scala)

This example Scala source code file (ArrowSyntax.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

arrowops, arrowsyntax, toarrowops, toarrowops0, unapply2

The ArrowSyntax.scala Scala example source code

package scalaz
package syntax

/** Wraps a value `self` and provides methods related to `Arrow` */
final class ArrowOps[F[_, _],A, B] private[syntax](val self: F[A, B])(implicit val F: Arrow[F]) extends Ops[F[A, B]] {
  ////
  final def ***[C, D](k: F[C, D]): F[(A, C), (B, D)] =
    F.splitA(self, k)

  final def &&&[C](k: F[A, C]): F[A, (B, C)] =
    F.combine(self, k)

  final def product: F[(A, A), (B, B)] =
    F.product(self)

  ////
}

sealed trait ToArrowOps0 {
  implicit def ToArrowOpsUnapply[FA](v: FA)(implicit F0: Unapply2[Arrow, FA]) =
    new ArrowOps[F0.M,F0.A,F0.B](F0(v))(F0.TC)

}

trait ToArrowOps extends ToArrowOps0 with ToSplitOps with ToStrongOps with ToCategoryOps {

  implicit def ToArrowOps[F[_, _],A, B](v: F[A, B])(implicit F0: Arrow[F]) =
    new ArrowOps[F,A, B](v)


  implicit def ToArrowVFromKleisliLike[G[_], F[G[_], _, _],A, B](v: F[G, A, B])(implicit F0: Arrow[F[G, ?, ?]]) =
    new ArrowOps[F[G, ?, ?], A, B](v)(F0)

  ////

  ////
}

trait ArrowSyntax[F[_, _]] extends SplitSyntax[F] with StrongSyntax[F] with CategorySyntax[F] {
  implicit def ToArrowOps[A, B](v: F[A, B]): ArrowOps[F, A, B] = new ArrowOps[F, A, B](v)(ArrowSyntax.this.F)

  def F: Arrow[F]
  ////

  ////
}

Other Scala examples (source code examples)

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



my book on functional programming

 

new blog posts

 

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