Trait/Object

com.twitter.algebird

Monoid

Related Docs: object Monoid | package algebird

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trait Monoid[T] extends Semigroup[T]

Monoid (take a deep breath, and relax about the weird name): This is a semigroup that has an additive identity (called zero), such that a+0=a, 0+a=a, for every a

Annotations
@implicitNotFound( ... )
Source
Monoid.scala
Linear Supertypes
Semigroup[T], Serializable, AnyRef, Any
Known Subclasses
AbstractField, AbstractGroup, AbstractMonoid, AbstractRing, AdjoinedUnitRing, AffineFunctionMonoid, AndValMonoid, ApplicativeField, ApplicativeGroup, ApplicativeMonoid, ApplicativeRing, ArrayGroup, ArrayMonoid, AveragedGroup, BatchedMonoid, BigDecimalRing, BigIntRing, BijectedField, BijectedGroup, BijectedMonoid, BijectedRing, BloomFilterMonoid, BooleanField, CMSMonoid, ConstantGroup, DecayedValueMonoid, DoubleField, EitherMonoid, EventuallyGroup, EventuallyMonoid, EventuallyRing, Field, FloatField, Function1Monoid, GaussianDistributionMonoid, GenericMapMonoid, GenericMapRing, Group, HashingTrickMonoid, HyperLogLogMonoid, HyperLogLogSeriesMonoid, IndexedSeqGroup, IndexedSeqMonoid, IndexedSeqRing, IntRing, JBoolField, JDoubleField, JFloatField, JIntRing, JListMonoid, JLongRing, JMapMonoid, JShortRing, ListMonoid, LongRing, MapGroup, MapMonoid, MapRing, MinHasher, MinHasher16, MinHasher32, MinPlusSemiring, MomentsGroup, MonoidCombinator, NullGroup, NumericRing, OptionGroup, OptionMonoid, OrValMonoid, PriorityQueueMonoid, Product10Group, Product10Monoid, Product10Ring, Product11Group, Product11Monoid, Product11Ring, Product12Group, Product12Monoid, Product12Ring, Product13Group, Product13Monoid, Product13Ring, Product14Group, Product14Monoid, Product14Ring, Product15Group, Product15Monoid, Product15Ring, Product16Group, Product16Monoid, Product16Ring, Product17Group, Product17Monoid, Product17Ring, Product18Group, Product18Monoid, Product18Ring, Product19Group, Product19Monoid, Product19Ring, Product20Group, Product20Monoid, Product20Ring, Product21Group, Product21Monoid, Product21Ring, Product22Group, Product22Monoid, Product22Ring, Product2Group, Product2Monoid, Product2Ring, Product3Group, Product3Monoid, Product3Ring, Product4Group, Product4Monoid, Product4Ring, Product5Group, Product5Monoid, Product5Ring, Product6Group, Product6Monoid, Product6Ring, Product7Group, Product7Monoid, Product7Ring, Product8Group, Product8Monoid, Product8Ring, Product9Group, Product9Monoid, Product9Ring, PromiseLinkMonoid, ResetStateMonoid, RightFolded2Monoid, Ring, SGDMonoid, ScMapGroup, ScMapMonoid, ScMapRing, ScopedTopNCMSMonoid, SeqMonoid, SetMonoid, ShortRing, SketchMapMonoid, StatisticsGroup, StatisticsMonoid, StatisticsRing, StringMonoid, TopCMSMonoid, TopKMonoid, TopNCMSMonoid, TopPctCMSMonoid, TunnelMonoid, Tuple10Group, Tuple10Monoid, Tuple10Ring, Tuple11Group, Tuple11Monoid, Tuple11Ring, Tuple12Group, Tuple12Monoid, Tuple12Ring, Tuple13Group, Tuple13Monoid, Tuple13Ring, Tuple14Group, Tuple14Monoid, Tuple14Ring, Tuple15Group, Tuple15Monoid, Tuple15Ring, Tuple16Group, Tuple16Monoid, Tuple16Ring, Tuple17Group, Tuple17Monoid, Tuple17Ring, Tuple18Group, Tuple18Monoid, Tuple18Ring, Tuple19Group, Tuple19Monoid, Tuple19Ring, Tuple20Group, Tuple20Monoid, Tuple20Ring, Tuple21Group, Tuple21Monoid, Tuple21Ring, Tuple22Group, Tuple22Monoid, Tuple22Ring, Tuple2Group, Tuple2Monoid, Tuple2Ring, Tuple3Group, Tuple3Monoid, Tuple3Ring, Tuple4Group, Tuple4Monoid, Tuple4Ring, Tuple5Group, Tuple5Monoid, Tuple5Ring, Tuple6Group, Tuple6Monoid, Tuple6Ring, Tuple7Group, Tuple7Monoid, Tuple7Ring, Tuple8Group, Tuple8Monoid, Tuple8Ring, Tuple9Group, Tuple9Monoid, Tuple9Ring, UnitGroup
Type Hierarchy
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. Monoid
  2. Semigroup
  3. Serializable
  4. AnyRef
  5. Any
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Visibility
  1. Public
  2. All

Abstract Value Members

  1. abstract def plus(l: T, r: T): T

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    Combines two T instances associatively.

    Combines two T instances associatively.

    returns

    result of combining l and r

    Definition Classes
    Semigroup

  2. abstract def zero: T

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    Returns the identity element of T for plus.

Concrete 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. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any

  5. def assertNotZero(v: T): Unit

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  6. def clone(): AnyRef

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

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

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    Definition Classes
    AnyRef

  8. def equals(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  9. def finalize(): Unit

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

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

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    Definition Classes
    AnyRef → Any

  11. def hashCode(): Int

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    Definition Classes
    AnyRef → Any

  12. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any

  13. def isNonZero(v: T): Boolean

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

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    Definition Classes
    AnyRef

  15. def nonZeroOption(v: T): Option[T]

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  16. final def notify(): Unit

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    Definition Classes
    AnyRef

  17. final def notifyAll(): Unit

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    Definition Classes
    AnyRef

  18. def sum(vs: TraversableOnce[T]): T

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  19. def sumOption(iter: TraversableOnce[T]): Option[T]

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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].

    iter

    instances of T to be combined

    returns

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

    Definition Classes
    Semigroup
    Note

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

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

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    Definition Classes
    AnyRef

  21. def toString(): String

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    Definition Classes
    AnyRef → Any

  22. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from Semigroup[T]

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped