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trait NaturalTransformation[F[_], G[_]] extends AnyRef

A universally quantified function, usually written as F ~> G, for symmetry with A => B.

Can be used to encode first-class functor transformations in the same way functions encode first-class concrete value morphisms; for example, sequence from scalaz.Traverse and cosequence from scalaz.Distributive give rise to ([a]T[A[a]]) ~> ([a]A[T[a]]), for varying A and T constraints.

Self Type
NaturalTransformation[F, G]
Source
NaturalTransformation.scala
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Abstract Value Members

  1. abstract def apply[A](fa: F[A]): G[A]

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
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  2. final def ##: Int
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  3. final def ==(arg0: Any): Boolean
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  4. def andThen[H[_]](f: ~>[G, H]): ~>[F, H]
  5. final def asInstanceOf[T0]: T0
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  6. def clone(): AnyRef
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    protected[lang]
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    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  7. def compose[E[_]](f: ~>[E, F]): ~>[E, G]
  8. final def eq(arg0: AnyRef): Boolean
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  9. def equals(arg0: AnyRef): Boolean
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  10. def finalize(): Unit
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    protected[lang]
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    @throws(classOf[java.lang.Throwable])
  11. final def getClass(): Class[_ <: AnyRef]
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    @native()
  12. def hashCode(): Int
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    @native()
  13. final def isInstanceOf[T0]: Boolean
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  14. def narrow[FF[_]](implicit ev: <~~<[FF, F]): ~>[FF, G]
  15. final def ne(arg0: AnyRef): Boolean
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  16. final def notify(): Unit
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    @native()
  17. final def notifyAll(): Unit
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    @native()
  18. def or[H[_]](hg: ~>[H, G]): ~>[[γ$0$]Coproduct[F, H, γ$0$], G]

    Combines this scalaz.NaturalTransformation with another one to create one that can transform scalaz.Coproduct.

    Combines this scalaz.NaturalTransformation with another one to create one that can transform scalaz.Coproduct.

    The current NaturalTransformation will be used to transform the Left (F) value of the scalaz.Coproduct while the other one will be used to transform the Right (H) value.

  19. final def synchronized[T0](arg0: => T0): T0
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  20. def toString(): String
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  21. final def wait(): Unit
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    @throws(classOf[java.lang.InterruptedException])
  22. final def wait(arg0: Long, arg1: Int): Unit
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    @throws(classOf[java.lang.InterruptedException])
  23. final def wait(arg0: Long): Unit
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    @throws(classOf[java.lang.InterruptedException]) @native()
  24. def widen[GG[_]](implicit ev: >~~>[GG, G]): ~>[F, GG]

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