Contains factory methods to build Accumulators.
Note that the Accumulator
object itself is not a factory, but it is implicitly convert to a factory according to the element type, see Accumulator.toFactory.
This allows passing the Accumulator
object as argument when a collection.Factory, and the implicit Accumulator.AccumulatorFactoryShape instance is used to build a specialized Accumulator according to the element type:
scala> val intAcc = Accumulator(1,2,3)
intAcc: scala.collection.convert.IntAccumulator = IntAccumulator(1, 2, 3)
scala> val anyAccc = Accumulator("K")
anyAccc: scala.collection.convert.AnyAccumulator[String] = AnyAccumulator(K)
scala> val intAcc2 = List(1,2,3).to(Accumulator)
intAcc2: scala.jdk.IntAccumulator = IntAccumulator(1, 2, 3)
scala> val anyAcc2 = List("K").to(Accumulator)
anyAcc2: scala.jdk.AnyAccumulator[String] = AnyAccumulator(K)
Attributes
- Companion
- class
- Source
- Accumulator.scala
- Graph
-
- Supertypes
- Self type
-
Accumulator.type
Members list
Type members
Classlikes
Attributes
- Companion
- trait
- Source
- Accumulator.scala
- Supertypes
- Self type
An implicit AccumulatorFactoryShape
is used in Accumulator factory method to return specialized variants according to the element type.
An implicit AccumulatorFactoryShape
is used in Accumulator factory method to return specialized variants according to the element type.
Attributes
- Companion
- object
- Source
- Accumulator.scala
- Supertypes
Attributes
- Source
- Accumulator.scala
- Supertypes
- Known subtypes
-
object AccumulatorFactoryShape
Value members
Concrete methods
Creates an Accumulator with the specified elements.
Creates an Accumulator with the specified elements.
Type parameters
- A
-
the type of the Accumulator's elements
- C
-
the (inferred) specific type of the Accumulator
Value parameters
- elems
-
the elements of the created Accumulator
Attributes
- Returns
-
a new Accumulator with elements
elems
- Source
- Accumulator.scala
Concatenates all argument collections into a single Accumulator.
Concatenates all argument collections into a single Accumulator.
Value parameters
- xss
-
the collections that are to be concatenated.
Attributes
- Returns
-
the concatenation of all the collections.
- Source
- Accumulator.scala
An empty collection
An empty collection
Type parameters
- A
-
the type of the Accumulator's elements
Attributes
- Source
- Accumulator.scala
Produces an Accumulator containing the results of some element computation a number of times.
Produces an Accumulator containing the results of some element computation a number of times.
Value parameters
- elem
-
the element computation
- n
-
the number of elements contained in the Accumulator.
Attributes
- Returns
-
An Accumulator that contains the results of
n
evaluations ofelem
. - Source
- Accumulator.scala
Produces a two-dimensional Accumulator containing the results of some element computation a number of times.
Produces a two-dimensional Accumulator containing the results of some element computation a number of times.
Value parameters
- elem
-
the element computation
- n1
-
the number of elements in the 1st dimension
- n2
-
the number of elements in the 2nd dimension
Attributes
- Returns
-
An Accumulator that contains the results of
n1 x n2
evaluations ofelem
. - Source
- Accumulator.scala
Produces a three-dimensional Accumulator containing the results of some element computation a number of times.
Produces a three-dimensional Accumulator containing the results of some element computation a number of times.
Value parameters
- elem
-
the element computation
- n1
-
the number of elements in the 1st dimension
- n2
-
the number of elements in the 2nd dimension
- n3
-
the number of elements in the 3rd dimension
Attributes
- Returns
-
An Accumulator that contains the results of
n1 x n2 x n3
evaluations ofelem
. - Source
- Accumulator.scala
Produces a four-dimensional Accumulator containing the results of some element computation a number of times.
Produces a four-dimensional Accumulator containing the results of some element computation a number of times.
Value parameters
- elem
-
the element computation
- n1
-
the number of elements in the 1st dimension
- n2
-
the number of elements in the 2nd dimension
- n3
-
the number of elements in the 3rd dimension
- n4
-
the number of elements in the 4th dimension
Attributes
- Returns
-
An Accumulator that contains the results of
n1 x n2 x n3 x n4
evaluations ofelem
. - Source
- Accumulator.scala
Produces a five-dimensional Accumulator containing the results of some element computation a number of times.
Produces a five-dimensional Accumulator containing the results of some element computation a number of times.
Value parameters
- elem
-
the element computation
- n1
-
the number of elements in the 1st dimension
- n2
-
the number of elements in the 2nd dimension
- n3
-
the number of elements in the 3rd dimension
- n4
-
the number of elements in the 4th dimension
- n5
-
the number of elements in the 5th dimension
Attributes
- Returns
-
An Accumulator that contains the results of
n1 x n2 x n3 x n4 x n5
evaluations ofelem
. - Source
- Accumulator.scala
Creates a target Accumulator from an existing source collection
Creates a target Accumulator from an existing source collection
Type parameters
- A
-
the type of the Accumulator’s elements
- C
-
the (inferred) specific type of the Accumulator
Value parameters
- source
-
Source collection
Attributes
- Returns
-
a new Accumulator with the elements of
source
- Source
- Accumulator.scala
Produces an Accumulator containing repeated applications of a function to a start value.
Produces an Accumulator containing repeated applications of a function to a start value.
Value parameters
- f
-
the function that's repeatedly applied
- len
-
the number of elements contained in the Accumulator
- start
-
the start value of the Accumulator
Attributes
- Returns
-
an Accumulator with
len
values in the sequencestart, f(start), f(f(start)), ...
- Source
- Accumulator.scala
Type parameters
- A
-
the type of the Accumulator’s elements
- C
-
the specific type of the Accumulator
Attributes
- Returns
-
A builder for
Accumulator
objects. - Source
- Accumulator.scala
Produces an Accumulator containing a sequence of increasing of integers.
Produces an Accumulator containing a sequence of increasing of integers.
Value parameters
- end
-
the end value of the Accumulator (the first value NOT contained)
- start
-
the first element of the Accumulator
Attributes
- Returns
-
an Accumulator with values
start, start + 1, ..., end - 1
- Source
- Accumulator.scala
Produces an Accumulator containing equally spaced values in some integer interval.
Produces an Accumulator containing equally spaced values in some integer interval.
Value parameters
- end
-
the end value of the Accumulator (the first value NOT contained)
- start
-
the start value of the Accumulator
- step
-
the difference between successive elements of the Accumulator (must be positive or negative)
Attributes
- Returns
-
an Accumulator with values
start, start + step, ...
up to, but excludingend
- Source
- Accumulator.scala
Produces an Accumulator containing values of a given function over a range of integer values starting from 0.
Produces an Accumulator containing values of a given function over a range of integer values starting from 0.
Value parameters
- f
-
The function computing element values
- n
-
The number of elements in the Accumulator
Attributes
- Returns
-
An Accumulator consisting of elements
f(0), ..., f(n -1)
- Source
- Accumulator.scala
Produces a two-dimensional Accumulator containing values of a given function over ranges of integer values starting from 0.
Produces a two-dimensional Accumulator containing values of a given function over ranges of integer values starting from 0.
Value parameters
- f
-
The function computing element values
- n1
-
the number of elements in the 1st dimension
- n2
-
the number of elements in the 2nd dimension
Attributes
- Returns
-
An Accumulator consisting of elements
f(i1, i2)
for0 <= i1 < n1
and0 <= i2 < n2
. - Source
- Accumulator.scala
Produces a three-dimensional Accumulator containing values of a given function over ranges of integer values starting from 0.
Produces a three-dimensional Accumulator containing values of a given function over ranges of integer values starting from 0.
Value parameters
- f
-
The function computing element values
- n1
-
the number of elements in the 1st dimension
- n2
-
the number of elements in the 2nd dimension
- n3
-
the number of elements in the 3rd dimension
Attributes
- Returns
-
An Accumulator consisting of elements
f(i1, i2, i3)
for0 <= i1 < n1
,0 <= i2 < n2
, and0 <= i3 < n3
. - Source
- Accumulator.scala
Produces a four-dimensional Accumulator containing values of a given function over ranges of integer values starting from 0.
Produces a four-dimensional Accumulator containing values of a given function over ranges of integer values starting from 0.
Value parameters
- f
-
The function computing element values
- n1
-
the number of elements in the 1st dimension
- n2
-
the number of elements in the 2nd dimension
- n3
-
the number of elements in the 3rd dimension
- n4
-
the number of elements in the 4th dimension
Attributes
- Returns
-
An Accumulator consisting of elements
f(i1, i2, i3, i4)
for0 <= i1 < n1
,0 <= i2 < n2
,0 <= i3 < n3
, and0 <= i4 < n4
. - Source
- Accumulator.scala
Produces a five-dimensional Accumulator containing values of a given function over ranges of integer values starting from 0.
Produces a five-dimensional Accumulator containing values of a given function over ranges of integer values starting from 0.
Value parameters
- f
-
The function computing element values
- n1
-
the number of elements in the 1st dimension
- n2
-
the number of elements in the 2nd dimension
- n3
-
the number of elements in the 3rd dimension
- n4
-
the number of elements in the 4th dimension
- n5
-
the number of elements in the 5th dimension
Attributes
- Returns
-
An Accumulator consisting of elements
f(i1, i2, i3, i4, i5)
for0 <= i1 < n1
,0 <= i2 < n2
,0 <= i3 < n3
,0 <= i4 < n4
, and0 <= i5 < n5
. - Source
- Accumulator.scala
Produces an Accumulator that uses a function f
to produce elements of type A
and update an internal state of type S
.
Produces an Accumulator that uses a function f
to produce elements of type A
and update an internal state of type S
.
Type parameters
- A
-
Type of the elements
- C
-
Type (usually inferred) of the Accumulator
- S
-
Type of the internal state
Value parameters
- f
-
Computes the next element (or returns
None
to signal the end of the collection) - init
-
State initial value
Attributes
- Returns
-
an Accumulator that produces elements using
f
untilf
returnsNone
- Source
- Accumulator.scala
Implicits
Implicits
Attributes
- Source
- Accumulator.scala