class DoubleAccumulator extends AccumulatorV2[Double, Double]
An accumulator for computing sum, count, and averages for double precision floating numbers.
- Source
- AccumulatorV2.scala
- Since
2.0.0
- Alphabetic
- By Inheritance
- DoubleAccumulator
- AccumulatorV2
- Serializable
- AnyRef
- Any
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- Public
- Protected
Instance Constructors
- new DoubleAccumulator()
Value Members
- final def !=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def ##: Int
- Definition Classes
- AnyRef → Any
- final def ==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- def add(v: Double): Unit
Adds v to the accumulator, i.e.
Adds v to the accumulator, i.e. increment sum by v and count by 1.
- Since
2.0.0
- def add(v: Double): Unit
Adds v to the accumulator, i.e.
Adds v to the accumulator, i.e. increment sum by v and count by 1.
- Definition Classes
- DoubleAccumulator → AccumulatorV2
- Since
2.0.0
- final def asInstanceOf[T0]: T0
- Definition Classes
- Any
- def avg: Double
Returns the average of elements added to the accumulator.
Returns the average of elements added to the accumulator.
- Since
2.0.0
- def clone(): AnyRef
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.CloneNotSupportedException]) @IntrinsicCandidate() @native()
- def copy(): DoubleAccumulator
Creates a new copy of this accumulator.
Creates a new copy of this accumulator.
- Definition Classes
- DoubleAccumulator → AccumulatorV2
- def copyAndReset(): AccumulatorV2[Double, Double]
Creates a new copy of this accumulator, which is zero value.
Creates a new copy of this accumulator, which is zero value. i.e. call
isZeroon the copy must return true.- Definition Classes
- AccumulatorV2
- def count: Long
Returns the number of elements added to the accumulator.
Returns the number of elements added to the accumulator.
- Since
2.0.0
- final def eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- def equals(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef → Any
- final def getClass(): Class[_ <: AnyRef]
- Definition Classes
- AnyRef → Any
- Annotations
- @IntrinsicCandidate() @native()
- def hashCode(): Int
- Definition Classes
- AnyRef → Any
- Annotations
- @IntrinsicCandidate() @native()
- final def id: Long
Returns the id of this accumulator, can only be called after registration.
Returns the id of this accumulator, can only be called after registration.
- Definition Classes
- AccumulatorV2
- final def isInstanceOf[T0]: Boolean
- Definition Classes
- Any
- final def isRegistered: Boolean
Returns true if this accumulator has been registered.
Returns true if this accumulator has been registered.
- Definition Classes
- AccumulatorV2
- Note
All accumulators must be registered before use, or it will throw exception.
- def isZero: Boolean
Returns false if this accumulator has had any values added to it or the sum is non-zero.
Returns false if this accumulator has had any values added to it or the sum is non-zero.
- Definition Classes
- DoubleAccumulator → AccumulatorV2
- def merge(other: AccumulatorV2[Double, Double]): Unit
Merges another same-type accumulator into this one and update its state, i.e.
Merges another same-type accumulator into this one and update its state, i.e. this should be merge-in-place.
- Definition Classes
- DoubleAccumulator → AccumulatorV2
- final def name: Option[String]
Returns the name of this accumulator, can only be called after registration.
Returns the name of this accumulator, can only be called after registration.
- Definition Classes
- AccumulatorV2
- final def ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- final def notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @IntrinsicCandidate() @native()
- final def notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @IntrinsicCandidate() @native()
- def reset(): Unit
Resets this accumulator, which is zero value.
Resets this accumulator, which is zero value. i.e. call
isZeromust return true.- Definition Classes
- DoubleAccumulator → AccumulatorV2
- def sum: Double
Returns the sum of elements added to the accumulator.
Returns the sum of elements added to the accumulator.
- Since
2.0.0
- final def synchronized[T0](arg0: => T0): T0
- Definition Classes
- AnyRef
- def toString(): String
- Definition Classes
- AccumulatorV2 → AnyRef → Any
- def value: Double
Defines the current value of this accumulator
Defines the current value of this accumulator
- Definition Classes
- DoubleAccumulator → AccumulatorV2
- final def wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException]) @native()
- final def wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- def withBufferSerialized(): AccumulatorV2[Double, Double]
- Attributes
- protected
- Definition Classes
- AccumulatorV2
- final def writeReplace(): Any
- Attributes
- protected
- Definition Classes
- AccumulatorV2
Deprecated Value Members
- def finalize(): Unit
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.Throwable]) @Deprecated
- Deprecated
(Since version 9)