Class

com.twitter.algebird

IndexedSeqSemigroup

Related Doc: package algebird

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class IndexedSeqSemigroup[T] extends Semigroup[IndexedSeq[T]]

Note that this works similar to Semigroup[Map[Int,T]] not like Semigroup[List[T]] This does element-wise operations, like standard vector math, not concatenation, like Semigroup[String] or Semigroup[List[T]]

If l.size != r.size, then only sums the elements up to the index min(l.size, r.size); appends the remainder to the result.

Source
IndexedSeq.scala
Linear Supertypes
Semigroup[IndexedSeq[T]], Serializable, AnyRef, Any
Known Subclasses
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Inherited
  1. IndexedSeqSemigroup
  2. Semigroup
  3. Serializable
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Visibility
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Instance Constructors

  1. new IndexedSeqSemigroup()(implicit semi: Semigroup[T])

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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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    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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    Any
  5. def clone(): AnyRef

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  6. final def eq(arg0: AnyRef): Boolean

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    AnyRef
  7. def equals(arg0: Any): Boolean

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    AnyRef → Any
  8. def finalize(): Unit

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    Attributes
    protected[java.lang]
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    AnyRef
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    @throws( classOf[java.lang.Throwable] )
  9. final def getClass(): Class[_]

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  10. def hashCode(): Int

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  11. final def isInstanceOf[T0]: Boolean

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    Any
  12. final def ne(arg0: AnyRef): Boolean

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    AnyRef
  13. final def notify(): Unit

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    Definition Classes
    AnyRef
  14. final def notifyAll(): Unit

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    Definition Classes
    AnyRef
  15. def plus(left: IndexedSeq[T], right: IndexedSeq[T]): IndexedSeq[T]

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    Combines two T instances associatively.

    Combines two T instances associatively.

    returns

    result of combining l and r

    Definition Classes
    IndexedSeqSemigroupSemigroup
  16. def sumOption(iter: TraversableOnce[IndexedSeq[T]]): Option[IndexedSeq[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.

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

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    AnyRef
  18. def toString(): String

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  19. final def wait(): Unit

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    @throws( ... )
  20. final def wait(arg0: Long, arg1: Int): Unit

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    @throws( ... )
  21. final def wait(arg0: Long): Unit

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Inherited from Semigroup[IndexedSeq[T]]

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

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