Packages

trait Arrow[=>:[_, _]] extends Split[=>:] with Profunctor[=>:]

A scalaz.Category supporting all ordinary functions, as well as combining arrows product-wise. Every Arrow forms a scalaz.Contravariant in one type parameter, and a scalaz.Applicative in the other, just as with ordinary functions.

Self Type
Arrow[=>:]
Source
Arrow.scala
Linear Supertypes
Profunctor[=>:], Split[=>:], Category[=>:], Compose[=>:], AnyRef, Any
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. Arrow
  2. Profunctor
  3. Split
  4. Category
  5. Compose
  6. AnyRef
  7. Any
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Visibility
  1. Public
  2. All

Type Members

  1. trait CategoryLaw extends ComposeLaw
    Definition Classes
    Category
  2. trait ComposeLaw extends AnyRef
    Definition Classes
    Compose

Abstract Value Members

  1. abstract def arr[A, B](f: (A) ⇒ B): =>:[A, B]

    Lift an ordinary function.

  2. abstract def compose[A, B, C](f: =>:[B, C], g: =>:[A, B]): =>:[A, C]

    Associative =>: binary operator.

    Associative =>: binary operator.

    Definition Classes
    Compose
  3. abstract def first[A, B, C](f: =>:[A, B]): =>:[(A, C), (B, C)]

    Pass C through untouched.

  4. abstract def id[A]: =>:[A, A]

    The left and right identity over compose.

    The left and right identity over compose.

    Definition Classes
    Category

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. def <<<[A, B, C](fbc: =>:[B, C], fab: =>:[A, B]): =>:[A, C]

    Alias for compose.

  4. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  5. def >>>[A, B, C](fab: =>:[A, B], fbc: =>:[B, C]): =>:[A, C]

    Flipped <<<.

  6. val arrowSyntax: ArrowSyntax[=>:]
  7. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  8. def categoryLaw: CategoryLaw
    Definition Classes
    Category
  9. val categorySyntax: CategorySyntax[=>:]
    Definition Classes
    Category
  10. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  11. def combine[A, B, C](fab: =>:[A, B], fac: =>:[A, C]): =>:[A, (B, C)]

    Run fab and fac on the same A.

    Run fab and fac on the same A. Sometimes &&&.

  12. def composeLaw: ComposeLaw
    Definition Classes
    Compose
  13. val composeSyntax: ComposeSyntax[=>:]
    Definition Classes
    Compose
  14. def contravariantInstance[C]: Contravariant[[α]=>:[α, C]]
  15. def covariantInstance[C]: Applicative[[α]=>:[C, α]]
  16. def empty: PlusEmpty[[α]=>:[α, α]]

    monoid, but universally quantified.

    monoid, but universally quantified.

    Definition Classes
    Category
  17. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  18. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  19. def finalize(): Unit
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  20. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
  21. def hashCode(): Int
    Definition Classes
    AnyRef → Any
  22. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  23. def mapfst[A, B, C](fab: =>:[A, B])(f: (C) ⇒ A): =>:[C, B]

    Contramap on A.

    Contramap on A.

    Definition Classes
    Arrow → Profunctor
  24. def mapsnd[A, B, C](fab: =>:[A, B])(f: (B) ⇒ C): =>:[A, C]

    Functor map on B.

    Functor map on B.

    Definition Classes
    Arrow → Profunctor
  25. def monoid[A]: Monoid[=>:[A, A]]

    The endomorphism monoid, where zero=id and append=compose.

    The endomorphism monoid, where zero=id and append=compose.

    Definition Classes
    Category
  26. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  27. final def notify(): Unit
    Definition Classes
    AnyRef
  28. final def notifyAll(): Unit
    Definition Classes
    AnyRef
  29. def plus: Plus[[α]=>:[α, α]]

    semigroup, but universally quantified.

    semigroup, but universally quantified.

    Definition Classes
    Compose
  30. def product[A, B](fab: =>:[A, B]): =>:[(A, A), (B, B)]

    Run two fabs alongside each other.

  31. val profunctorSyntax: ProfunctorSyntax[=>:]
    Definition Classes
    Profunctor
  32. def second[A, B, C](f: =>:[A, B]): =>:[(C, A), (C, B)]

    Pass C through untouched.

  33. def semigroup[A]: Semigroup[=>:[A, A]]

    The endomorphism semigroup, where append=compose.

    The endomorphism semigroup, where append=compose.

    Definition Classes
    Compose
  34. def split[A, B, C, D](f: =>:[A, B], g: =>:[C, D]): =>:[(A, C), (B, D)]

    Run fab and fcd alongside each other.

    Run fab and fcd alongside each other. Sometimes ***.

    Definition Classes
    Arrow → Split
  35. def splitA[A, B, C, D](fab: =>:[A, B], fcd: =>:[C, D]): =>:[(A, C), (B, D)]

    Alias for split.

  36. val splitSyntax: SplitSyntax[=>:]
    Definition Classes
    Split
  37. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  38. def toString(): String
    Definition Classes
    AnyRef → Any
  39. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  40. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  41. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from Profunctor[=>:]

Inherited from Split[=>:]

Inherited from Category[=>:]

Inherited from Compose[=>:]

Inherited from AnyRef

Inherited from Any

Ungrouped