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Scala example source code file (BitraverseSyntax.scala)

This example Scala source code file (BitraverseSyntax.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

bitraverseops, tobitraverseops

The BitraverseSyntax.scala Scala example source code

package scalaz
package syntax

/** Wraps a value `self` and provides methods related to `Bitraverse` */
final class BitraverseOps[F[_, _],A, B] private[syntax](val self: F[A, B])(implicit val F: Bitraverse[F]) extends Ops[F[A, B]] {
  ////
  final def bitraverse[G[_], C, D](f: A => G[C], g: B => G[D])(implicit ap: Applicative[G]): G[F[C, D]] =
      F.bitraverseImpl(self)(f, g)

  final def bitraverseU[GC, GD](f: A => GC, g: B => GD)(implicit G1: UnapplyProduct[Applicative, GC, GD]): G1.M[F[G1.A, G1.B]] =
      F.bitraverseImpl(self)(a => G1._1(f(a)), b => G1._2(g(b)))(G1.TC)

  import Leibniz.===

  final def bisequence[G[_], A1, B1](implicit G: Applicative[G], eva: A === G[A1], evb: B === G[B1]): G[F[A1, B1]] =
    bitraverse(fa => eva(fa), fb => evb(fb))

  final def bisequenceU[GC, GD](implicit eva: A === GC, evb: B === GD, G1: UnapplyProduct[Applicative, GC, GD]): G1.M[F[G1.A, G1.B]] =
    bitraverseU(eva, evb)
  ////
}

sealed trait ToBitraverseOps0 {
  implicit def ToBitraverseOpsUnapply[FA](v: FA)(implicit F0: Unapply2[Bitraverse, FA]) =
    new BitraverseOps[F0.M,F0.A,F0.B](F0(v))(F0.TC)

}

trait ToBitraverseOps extends ToBitraverseOps0 with ToBifunctorOps with ToBifoldableOps {

  implicit def ToBitraverseOps[F[_, _],A, B](v: F[A, B])(implicit F0: Bitraverse[F]) =
    new BitraverseOps[F,A, B](v)


  implicit def ToBitraverseVFromKleisliLike[G[_], F[G[_], _, _],A, B](v: F[G, A, B])(implicit F0: Bitraverse[F[G, ?, ?]]) =
    new BitraverseOps[F[G, ?, ?], A, B](v)(F0)

  ////

  ////
}

trait BitraverseSyntax[F[_, _]] extends BifunctorSyntax[F] with BifoldableSyntax[F] {
  implicit def ToBitraverseOps[A, B](v: F[A, B]): BitraverseOps[F, A, B] = new BitraverseOps[F, A, B](v)(BitraverseSyntax.this.F)

  def F: Bitraverse[F]
  ////

  ////
}

Other Scala examples (source code examples)

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



my book on functional programming

 

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