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trait Foldable[F[_]] extends AnyRef

Inspired from the scalaz (https://github.com/scalaz/scalaz) project

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Abstract Value Members

  1. abstract def foldLeft[A, B](fa: F[A], z: B)(f: (B, A) => B): B

    Left-associative fold of a structure.

  2. abstract def foldMap[A, B](fa: F[A])(f: (A) => B)(implicit F: Monoid[B]): B

    Map each element of the structure to a Monoid, and combine the results.

  3. abstract def foldRight[A, B](fa: F[A], z: => B)(f: (A, => B) => B): B

    Right-associative fold of a structure.

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
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  2. final def ##: Int
    Definition Classes
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  3. final def ==(arg0: Any): Boolean
    Definition Classes
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  4. def all[A](fa: F[A])(p: (A) => Boolean): Boolean

    Whether all As in fa yield true from p.

  5. def allM[G[_], A](fa: F[A])(p: (A) => G[Boolean])(implicit G: Monad[G]): G[Boolean]

    all with monadic traversal.

  6. def any[A](fa: F[A])(p: (A) => Boolean): Boolean

    Whether any As in fa yield true from p.

  7. def anyM[G[_], A](fa: F[A])(p: (A) => G[Boolean])(implicit G: Monad[G]): G[Boolean]

    any with monadic traversal.

  8. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  9. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
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    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native() @IntrinsicCandidate()
  10. final def count[A](fa: F[A]): Int

    Alias for length.

  11. def empty[A](fa: F[A]): Boolean

    Deforested alias for toStream(fa).isEmpty.

  12. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  13. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  14. def findLeft[A](fa: F[A])(f: (A) => Boolean): Option[A]
  15. def findRight[A](fa: F[A])(f: (A) => Boolean): Option[A]
  16. def fold[M](t: F[M])(implicit arg0: Monoid[M]): M

    Combine the elements of a structure using a monoid.

  17. def foldLeftM[G[_], A, B](fa: F[A], z: B)(f: (B, A) => G[B])(implicit M: Monad[G]): G[B]

    Left-associative, monadic fold of a structure.

  18. def foldMapM[G[_], A, B](fa: F[A])(f: (A) => G[B])(implicit B: Monoid[B], G: Monad[G]): G[B]

    Specialization of foldRightM when B has a Monoid.

  19. def foldRightM[G[_], A, B](fa: F[A], z: => B)(f: (A, => B) => G[B])(implicit M: Monad[G]): G[B]

    Right-associative, monadic fold of a structure.

  20. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
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    Annotations
    @native() @IntrinsicCandidate()
  21. def hashCode(): Int
    Definition Classes
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    Annotations
    @native() @IntrinsicCandidate()
  22. def index[A](fa: F[A], i: Int): Option[A]

    returns

    the element at index i in a Some, or None if the given index falls outside of the range

  23. def indexOr[A](fa: F[A], default: => A, i: Int): A

    returns

    the element at index i, or default if the given index falls outside of the range

  24. def intercalate[A](fa: F[A], a: A)(implicit A: Monoid[A]): A

    Insert an A between every A, yielding the sum.

  25. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  26. def length[A](fa: F[A]): Int

    Deforested alias for toStream(fa).size.

  27. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  28. final def notify(): Unit
    Definition Classes
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    Annotations
    @native() @IntrinsicCandidate()
  29. final def notifyAll(): Unit
    Definition Classes
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    Annotations
    @native() @IntrinsicCandidate()
  30. def sequence_[M[_], A](fa: F[M[A]])(implicit a: Applicative[M]): M[Unit]

    Strict sequencing in an applicative functor M that ignores the value in fa.

  31. def suml[A](fa: F[A])(implicit A: Monoid[A]): A
  32. def sumr[A](fa: F[A])(implicit A: Monoid[A]): A
  33. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
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  34. def toList[A](fa: F[A]): List[A]
  35. def toSet[A](fa: F[A]): Set[A]
  36. def toStream[A](fa: F[A]): Stream[A]
  37. def toString(): String
    Definition Classes
    AnyRef → Any
  38. def toVector[A](fa: F[A]): Vector[A]
  39. def traverse_[M[_], A, B](fa: F[A])(f: (A) => M[B])(implicit a: Applicative[M]): M[Unit]

    Strict traversal in an applicative functor M that ignores the result of f.

  40. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
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    Annotations
    @throws(classOf[java.lang.InterruptedException])
  41. final def wait(arg0: Long): Unit
    Definition Classes
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    Annotations
    @throws(classOf[java.lang.InterruptedException])
  42. final def wait(): Unit
    Definition Classes
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    Annotations
    @throws(classOf[java.lang.InterruptedException])

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
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    Annotations
    @throws(classOf[java.lang.Throwable]) @Deprecated
    Deprecated

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