implicit object CMSHasherString extends CMSHasher[String]
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- CMSHasher
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- def contramap[L](f: (L) => String): CMSHasher[L]
Given
f
, a function fromL
intoK
, creates aCMSHasher[L]
whose hash function is equivalent to:Given
f
, a function fromL
intoK
, creates aCMSHasher[L]
whose hash function is equivalent to:def hash(a: Int, b: Int, width: Int)(x: L): CMSHasher[L] = CMSHasher[K].hash(a, b, width)(f(x))
Be aware that the use of contramap may come at a cost (e.g. increased time) due to the translation calls between
K
andL
.Usage
The following example creates a CMSHasher for the unsupported type
K=Double
:def f(d: Double): Array[Byte] = { val l: Long = java.lang.Double.doubleToLongBits(d) java.nio.ByteBuffer.allocate(8).putLong(l).array() } implicit val cmsHasherDouble: CMSHasher[Double] = CMSHasherArrayByte.contramap((d: Double) => f(d))
- Definition Classes
- CMSHasher
- final def eq(arg0: AnyRef): Boolean
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- def equals(arg0: AnyRef): Boolean
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- def finalize(): Unit
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- def hash(a: Int, b: Int, width: Int)(x: String): Int
Returns
a * x + b (mod p) (mod width)
.Returns
a * x + b (mod p) (mod width)
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- CMSHasherString → CMSHasher
- def hashCode(): Int
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- final def notifyAll(): Unit
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- def on[L](f: (L) => String): CMSHasher[L]
Given
f
, a function fromL
intoK
, creates aCMSHasher[L]
whose hash function is equivalent to:Given
f
, a function fromL
intoK
, creates aCMSHasher[L]
whose hash function is equivalent to:def hash(a: Int, b: Int, width: Int)(x: L): CMSHasher[L] = CMSHasher[K].hash(a, b, width)(f(x))
- Definition Classes
- CMSHasher
- final def synchronized[T0](arg0: => T0): T0
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- def toString(): String
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- final def wait(): Unit
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- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
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