Fold

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. implicit def ApplyFold[R, T]: Apply[[γ$10$]Fold[R, T, γ$10$]]

   

   Apply instance

   Apply instance

   This means that we can write:

   val mean: Fold[Int, Int] = (sum |@| count)(_ / _)

   An Apply instance is also a Functor instance so we can write:

   val meanTimes2 = mean.map(_ * 2)

5. def CobindFold[R, T]: Cobind[[γ$20$]Fold[R, T, γ$20$]]

   

   Cobind instance

6. implicit def ComposeFold[R]: Compose[[β$16$, γ$17$]Fold[R, β$16$, γ$17$]]

   

   A Fold can be turned into a Compose

   A Fold can be turned into a Compose

   This allows us to write:

   val scans = sum compose list

7. implicit def MonoidSink[R, A]: Monoid[Fold[R, A, Unit]]

   

8. implicit def ProfunctorFold[R]: Profunctor[[β$12$, γ$13$]Fold[R, β$12$, γ$13$]]

   

   Profunctor instance

   Profunctor instance

   This is especially useful because we can "map" on the input element

   val doubleSum = fromMonoid[Double] // sum all elements val roundedDoubleSum = doubleSum.mapfst(_.round)

9. final def asInstanceOf[T0]: T0

   

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10. def clone(): AnyRef

    

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11. final def eq(arg0: AnyRef): Boolean

    

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12. def equals(arg0: Any): Boolean

    

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13. def finalize(): Unit

    

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14. final def getClass(): Class[_]

    

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15. def hashCode(): Int

    

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16. final def isInstanceOf[T0]: Boolean

    

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17. final def ne(arg0: AnyRef): Boolean

    

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18. final def notify(): Unit

    

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19. final def notifyAll(): Unit

    

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20. final def synchronized[T0](arg0: ⇒ T0): T0

    

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21. def toString(): String

    

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22. final def wait(): Unit

    

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23. final def wait(arg0: Long, arg1: Int): Unit

    

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24. final def wait(arg0: Long): Unit

    

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