scala.util

# MurmurHash

#### object MurmurHash

An object designed to generate well-distributed non-cryptographic hashes. It is designed to hash a collection of integers; along with the integers to hash, it generates two magic streams of integers to increase the distribution of repetitive input sequences. Thus, three methods need to be called at each step (to start and to incorporate a new integer) to update the values. Only one method needs to be called to finalize the hash.

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Deprecated

  (Since version 2.10.0) Use the object MurmurHash3 instead.

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### 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. #### def arrayHash[T](a: Array[T]): Int

   Compute a high-quality hash of an array

5. #### final def asInstanceOf[T0]: T0

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6. #### def clone(): AnyRef

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

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8. #### def equals(arg0: Any): Boolean

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9. #### def extendHash(hash: Int, value: Int, magicA: Int, magicB: Int): Int

   Incorporates a new value into an existing hash.

   Incorporates a new value into an existing hash.

   hash

     the prior hash value

   value

     the new value to incorporate

   magicA

     a magic integer from the stream

   magicB

     a magic integer from a different stream

   returns

     the updated hash value

10. #### def finalize(): Unit

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11. #### def finalizeHash(hash: Int): Int

    Once all hashes have been incorporated, this performs a final mixing

12. #### final def getClass(): Class[_]

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13. #### def hashCode(): Int

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14. #### final def isInstanceOf[T0]: Boolean

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15. #### final def ne(arg0: AnyRef): Boolean

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16. #### def nextMagicA(magicA: Int): Int

    Given a magic integer from the first stream, compute the next

17. #### def nextMagicB(magicB: Int): Int

    Given a magic integer from the second stream, compute the next

18. #### final def notify(): Unit

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19. #### final def notifyAll(): Unit

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20. #### def startHash(seed: Int): Int

    Begin a new hash with a seed value.

21. #### def startMagicA: Int

    The initial magic integers in the first stream.

22. #### def startMagicB: Int

    The initial magic integer in the second stream.

23. #### val storedMagicA: Array[Int]

    The first 23 magic integers from the first stream are stored here

24. #### val storedMagicB: Array[Int]

    The first 23 magic integers from the second stream are stored here

25. #### def stringHash(s: String): Int

    Compute a high-quality hash of a string

26. #### def symmetricHash[T](xs: collection.TraversableOnce[T], seed: Int): Int

    Compute a hash that is symmetric in its arguments--that is, where the order of appearance of elements does not matter.

    Compute a hash that is symmetric in its arguments--that is, where the order of appearance of elements does not matter. This is useful for hashing sets, for example.

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

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28. #### def toString(): String

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29. #### final def wait(): Unit

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

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31. #### final def wait(arg0: Long): Unit

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