Class

com.twitter.algebird

MomentsMonoid

Related Doc: package algebird

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class MomentsMonoid extends Monoid[Moments] with CommutativeMonoid[Moments]

Linear Supertypes
CommutativeMonoid[Moments], CommutativeSemigroup[Moments], Monoid[Moments], AdditiveMonoid[Moments], cats.kernel.Monoid[Moments], Semigroup[Moments], AdditiveSemigroup[Moments], cats.kernel.Semigroup[Moments], Serializable, Serializable, AnyRef, Any
Known Subclasses
MomentsGroup
Ordering
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  2. By Inheritance
Inherited
  1. MomentsMonoid
  2. CommutativeMonoid
  3. CommutativeSemigroup
  4. Monoid
  5. AdditiveMonoid
  6. Monoid
  7. Semigroup
  8. AdditiveSemigroup
  9. Semigroup
  10. Serializable
  11. Serializable
  12. AnyRef
  13. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new MomentsMonoid()

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Value Members

  1. final def !=(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  2. final def ##(): Int

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    Definition Classes
    AnyRef → Any

  3. final def ==(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  4. def additive: algebra.Monoid[Moments]

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    These are from algebra.Monoid

    These are from algebra.Monoid

    Definition Classes
    Monoid → AdditiveMonoid → Semigroup → AdditiveSemigroup

  5. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any

  6. def assertNotZero(v: Moments): Unit

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    Definition Classes
    Monoid

  7. def clone(): AnyRef

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  8. def combine(l: Moments, r: Moments): Moments

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    Definition Classes
    Semigroup → Semigroup

  9. def combineAll(t: TraversableOnce[Moments]): Moments

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    Definition Classes
    Monoid → Monoid

  10. def combineAllOption(as: IterableOnce[Moments]): Option[Moments]

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    Definition Classes
    Monoid → Semigroup

  11. def combineN(a: Moments, n: Int): Moments

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    Definition Classes
    Monoid → Semigroup

  12. def empty: Moments

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    Definition Classes
    Monoid → Monoid

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

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    Definition Classes
    AnyRef

  14. def equals(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  15. def finalize(): Unit

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

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

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    Definition Classes
    AnyRef → Any

  17. def hashCode(): Int

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    Definition Classes
    AnyRef → Any

  18. def isEmpty(a: Moments)(implicit ev: Eq[Moments]): Boolean

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    Definition Classes
    Monoid

  19. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any

  20. def isNonZero(v: Moments): Boolean

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    Definition Classes
    Monoid

  21. def isZero(a: Moments)(implicit ev: Eq[Moments]): Boolean

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    Definition Classes
    AdditiveMonoid

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

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    Definition Classes
    AnyRef

  23. def nonZeroOption(v: Moments): Option[Moments]

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    Definition Classes
    Monoid

  24. final def notify(): Unit

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    Definition Classes
    AnyRef

  25. final def notifyAll(): Unit

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    Definition Classes
    AnyRef

  26. def plus(a: Moments, b: Moments): Moments

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    Definition Classes
    MomentsMonoid → AdditiveSemigroup

  27. def positiveSumN(a: Moments, n: Int): Moments

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    Attributes
    protected[this]
    Definition Classes
    AdditiveSemigroup

  28. def repeatedCombineN(a: Moments, n: Int): Moments

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    Attributes
    protected[this]
    Definition Classes
    Semigroup

  29. def sum(vs: TraversableOnce[Moments]): Moments

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    Definition Classes
    Monoid → AdditiveMonoid

  30. def sumN(a: Moments, n: Int): Moments

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    Definition Classes
    AdditiveMonoid → AdditiveSemigroup

  31. def sumOption(items: TraversableOnce[Moments]): Option[Moments]

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    Returns an instance of T calculated by summing all instances in iter in one pass.

    Returns an instance of T calculated by summing all instances in iter in one pass. Returns None if iter is empty, else Some[ T].

    returns

    None if iter is empty, else an option value containing the summed T

    Definition Classes
    MomentsMonoid → Semigroup
    Note

    Override if there is a faster way to compute this sum than iter.reduceLeftOption using plus.

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

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    Definition Classes
    AnyRef

  33. def toString(): String

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    Definition Classes
    AnyRef → Any

  34. def trySum(as: TraversableOnce[Moments]): Option[Moments]

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    Definition Classes
    AdditiveMonoid → AdditiveSemigroup

  35. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  38. val zero: Moments

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    Definition Classes
    MomentsMonoid → AdditiveMonoid

Deprecated Value Members

  1. def getCombinedMean(n: Long, an: Double, k: Long, ak: Double): Double

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    Given two streams of doubles (n, an) and (k, ak) of form (count, mean), calculates the mean of the combined stream.

    Given two streams of doubles (n, an) and (k, ak) of form (count, mean), calculates the mean of the combined stream.

    Uses a more stable online algorithm which should be suitable for large numbers of records similar to: http://en.wikipedia.org/wiki/Algorithms_for_calculating_variance#Parallel_algorithm

    we no longer use this, but we can't remove it due to binary compatibility

    Annotations
    @deprecated
    Deprecated

    (Since version 0.13.8) Use Moments.getCombinedMeanDouble instead

Inherited from CommutativeMonoid[Moments]

Inherited from CommutativeSemigroup[Moments]

Inherited from Monoid[Moments]

Inherited from AdditiveMonoid[Moments]

Inherited from cats.kernel.Monoid[Moments]

Inherited from Semigroup[Moments]

Inherited from AdditiveSemigroup[Moments]

Inherited from cats.kernel.Semigroup[Moments]

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped