Trait/Object

com.twitter.algebird

Predecessible

Related Docs: object Predecessible | package algebird

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trait Predecessible[T] extends Serializable

This is a typeclass to represent things which are countable down. Note that it is important that a value prev(t) is always less than t. Note that prev returns Option because this class comes with the notion that some items may reach a minimum key, which is None.

Source
Predecessible.scala
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Abstract Value Members

  1. abstract def partialOrdering: PartialOrdering[T]

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    The law is: prev(t) .map { n => partialOrdering.lteq(n, t) && (!partialOrdering.equiv(t, n)) } .getOrElse(true)

    The law is: prev(t) .map { n => partialOrdering.lteq(n, t) && (!partialOrdering.equiv(t, n)) } .getOrElse(true)

    Note Ordering extends PartialOrdering, so we are taking a weak constraint that some items can be ordered, and namely, the sequence of items returned by prev is strictly decreasing

  2. abstract def prev(old: T): Option[T]

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Concrete Value Members

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

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  2. final def ##(): Int

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

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  4. final def asInstanceOf[T0]: T0

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  5. def clone(): AnyRef

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

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  7. def equals(arg0: Any): Boolean

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  8. def finalize(): Unit

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  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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  12. def iteratePrev(old: T): Iterable[T]

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

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  14. final def notify(): Unit

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  15. final def notifyAll(): Unit

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  16. def prev(old: Option[T]): Option[T]

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

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  18. def toString(): String

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  19. final def wait(): Unit

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

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

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