object Iterable extends Delegate[Iterable]
This object provides a set of operations to create Iterable values.
- Annotations
- @SerialVersionUID()
- Source
- Iterable.scala
- Alphabetic
- By Inheritance
- Iterable
- Delegate
- IterableFactory
- Serializable
- AnyRef
- Any
- Hide All
- Show All
- Public
- Protected
Value Members
- def apply[A](elems: A*): Iterable[A]
Creates a iterable collection with the specified elements.
Creates a iterable collection with the specified elements.
- A
the type of the iterable collection's elements
- elems
the elements of the created iterable collection
- returns
a new iterable collection with elements
elems
- Definition Classes
- Delegate → IterableFactory
- def concat[A](xss: collection.Iterable[A]*): Iterable[A]
Concatenates all argument collections into a single iterable collection.
Concatenates all argument collections into a single iterable collection.
- xss
the collections that are to be concatenated.
- returns
the concatenation of all the collections.
- Definition Classes
- IterableFactory
- def empty[A]: Iterable[A]
An empty iterable collection
An empty iterable collection
- A
the type of the iterable collection's elements
- Definition Classes
- Delegate → IterableFactory
- def fill[A](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(elem: => A): Iterable[Iterable[Iterable[Iterable[Iterable[A]]]]]
Produces a five-dimensional iterable collection containing the results of some element computation a number of times.
Produces a five-dimensional iterable collection containing the results of some element computation a number of times.
- 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
- elem
the element computation
- returns
A iterable collection that contains the results of
n1 x n2 x n3 x n4 x n5evaluations ofelem.
- Definition Classes
- IterableFactory
- def fill[A](n1: Int, n2: Int, n3: Int, n4: Int)(elem: => A): Iterable[Iterable[Iterable[Iterable[A]]]]
Produces a four-dimensional iterable collection containing the results of some element computation a number of times.
Produces a four-dimensional iterable collection containing the results of some element computation a number of times.
- 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
- elem
the element computation
- returns
A iterable collection that contains the results of
n1 x n2 x n3 x n4evaluations ofelem.
- Definition Classes
- IterableFactory
- def fill[A](n1: Int, n2: Int, n3: Int)(elem: => A): Iterable[Iterable[Iterable[A]]]
Produces a three-dimensional iterable collection containing the results of some element computation a number of times.
Produces a three-dimensional iterable collection containing the results of some element computation a number of times.
- 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
- elem
the element computation
- returns
A iterable collection that contains the results of
n1 x n2 x n3evaluations ofelem.
- Definition Classes
- IterableFactory
- def fill[A](n1: Int, n2: Int)(elem: => A): Iterable[Iterable[A]]
Produces a two-dimensional iterable collection containing the results of some element computation a number of times.
Produces a two-dimensional iterable collection containing the results of some element computation a number of times.
- n1
the number of elements in the 1st dimension
- n2
the number of elements in the 2nd dimension
- elem
the element computation
- returns
A iterable collection that contains the results of
n1 x n2evaluations ofelem.
- Definition Classes
- IterableFactory
- def fill[A](n: Int)(elem: => A): Iterable[A]
Produces a iterable collection containing the results of some element computation a number of times.
Produces a iterable collection containing the results of some element computation a number of times.
- n
the number of elements contained in the iterable collection.
- elem
the element computation
- returns
A iterable collection that contains the results of
nevaluations ofelem.
- Definition Classes
- IterableFactory
- def from[E](it: IterableOnce[E]): Iterable[E]
Creates a target iterable collection from an existing source collection
Creates a target iterable collection from an existing source collection
- returns
a new iterable collection with the elements of
source
- Definition Classes
- Delegate → IterableFactory
- implicit def iterableFactory[A]: Factory[A, Iterable[A]]
- Definition Classes
- IterableFactory
- def iterate[A](start: A, len: Int)(f: (A) => A): Iterable[A]
Produces a iterable collection containing repeated applications of a function to a start value.
Produces a iterable collection containing repeated applications of a function to a start value.
- start
the start value of the iterable collection
- len
the number of elements contained in the iterable collection
- f
the function that's repeatedly applied
- returns
a iterable collection with
lenvalues in the sequencestart, f(start), f(f(start)), ...
- Definition Classes
- IterableFactory
- def newBuilder[A]: Builder[A, Iterable[A]]
- A
the type of the iterable collection’s elements
- returns
A builder for
Iterableobjects.
- Definition Classes
- Delegate → IterableFactory
- def range[A](start: A, end: A, step: A)(implicit arg0: Integral[A]): Iterable[A]
Produces a iterable collection containing equally spaced values in some integer interval.
Produces a iterable collection containing equally spaced values in some integer interval.
- start
the start value of the iterable collection
- end
the end value of the iterable collection (the first value NOT contained)
- step
the difference between successive elements of the iterable collection (must be positive or negative)
- returns
a iterable collection with values
start, start + step, ...up to, but excludingend
- Definition Classes
- IterableFactory
- def range[A](start: A, end: A)(implicit arg0: Integral[A]): Iterable[A]
Produces a iterable collection containing a sequence of increasing of integers.
Produces a iterable collection containing a sequence of increasing of integers.
- start
the first element of the iterable collection
- end
the end value of the iterable collection (the first value NOT contained)
- returns
a iterable collection with values
start, start + 1, ..., end - 1
- Definition Classes
- IterableFactory
- def tabulate[A](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(f: (Int, Int, Int, Int, Int) => A): Iterable[Iterable[Iterable[Iterable[Iterable[A]]]]]
Produces a five-dimensional iterable collection containing values of a given function over ranges of integer values starting from 0.
Produces a five-dimensional iterable collection containing values of a given function over ranges of integer values starting from 0.
- 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
- f
The function computing element values
- returns
A iterable collection consisting of elements
f(i1, i2, i3, i4, i5)for0 <= i1 < n1,0 <= i2 < n2,0 <= i3 < n3,0 <= i4 < n4, and0 <= i5 < n5.
- Definition Classes
- IterableFactory
- def tabulate[A](n1: Int, n2: Int, n3: Int, n4: Int)(f: (Int, Int, Int, Int) => A): Iterable[Iterable[Iterable[Iterable[A]]]]
Produces a four-dimensional iterable collection containing values of a given function over ranges of integer values starting from 0.
Produces a four-dimensional iterable collection containing values of a given function over ranges of integer values starting from 0.
- 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
- f
The function computing element values
- returns
A iterable collection consisting of elements
f(i1, i2, i3, i4)for0 <= i1 < n1,0 <= i2 < n2,0 <= i3 < n3, and0 <= i4 < n4.
- Definition Classes
- IterableFactory
- def tabulate[A](n1: Int, n2: Int, n3: Int)(f: (Int, Int, Int) => A): Iterable[Iterable[Iterable[A]]]
Produces a three-dimensional iterable collection containing values of a given function over ranges of integer values starting from 0.
Produces a three-dimensional iterable collection containing values of a given function over ranges of integer values starting from 0.
- 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
- f
The function computing element values
- returns
A iterable collection consisting of elements
f(i1, i2, i3)for0 <= i1 < n1,0 <= i2 < n2, and0 <= i3 < n3.
- Definition Classes
- IterableFactory
- def tabulate[A](n1: Int, n2: Int)(f: (Int, Int) => A): Iterable[Iterable[A]]
Produces a two-dimensional iterable collection containing values of a given function over ranges of integer values starting from 0.
Produces a two-dimensional iterable collection containing values of a given function over ranges of integer values starting from 0.
- n1
the number of elements in the 1st dimension
- n2
the number of elements in the 2nd dimension
- f
The function computing element values
- returns
A iterable collection consisting of elements
f(i1, i2)for0 <= i1 < n1and0 <= i2 < n2.
- Definition Classes
- IterableFactory
- def tabulate[A](n: Int)(f: (Int) => A): Iterable[A]
Produces a iterable collection containing values of a given function over a range of integer values starting from 0.
Produces a iterable collection containing values of a given function over a range of integer values starting from 0.
- n
The number of elements in the iterable collection
- f
The function computing element values
- returns
A iterable collection consisting of elements
f(0), ..., f(n -1)
- Definition Classes
- IterableFactory
- def unfold[A, S](init: S)(f: (S) => Option[(A, S)]): Iterable[A]
Produces a iterable collection that uses a function
fto produce elements of typeAand update an internal state of typeS.Produces a iterable collection that uses a function
fto produce elements of typeAand update an internal state of typeS.- A
Type of the elements
- S
Type of the internal state
- init
State initial value
- f
Computes the next element (or returns
Noneto signal the end of the collection)- returns
a iterable collection that produces elements using
funtilfreturnsNone
- Definition Classes
- IterableFactory
This is the documentation for the Scala standard library.
Package structure
The scala package contains core types like
Int,Float,ArrayorOptionwhich are accessible in all Scala compilation units without explicit qualification or imports.Notable packages include:
scala.collectionand its sub-packages contain Scala's collections frameworkscala.collection.immutable- Immutable, sequential data-structures such asVector,List,Range,HashMaporHashSetscala.collection.mutable- Mutable, sequential data-structures such asArrayBuffer,StringBuilder,HashMaporHashSetscala.collection.concurrent- Mutable, concurrent data-structures such asTrieMapscala.concurrent- Primitives for concurrent programming such asFuturesandPromisesscala.io- Input and output operationsscala.math- Basic math functions and additional numeric types likeBigIntandBigDecimalscala.sys- Interaction with other processes and the operating systemscala.util.matching- Regular expressionsOther packages exist. See the complete list on the right.
Additional parts of the standard library are shipped as separate libraries. These include:
scala.reflect- Scala's reflection API (scala-reflect.jar)scala.xml- XML parsing, manipulation, and serialization (scala-xml.jar)scala.collection.parallel- Parallel collections (scala-parallel-collections.jar)scala.util.parsing- Parser combinators (scala-parser-combinators.jar)scala.swing- A convenient wrapper around Java's GUI framework called Swing (scala-swing.jar)Automatic imports
Identifiers in the scala package and the
scala.Predefobject are always in scope by default.Some of these identifiers are type aliases provided as shortcuts to commonly used classes. For example,
Listis an alias forscala.collection.immutable.List.Other aliases refer to classes provided by the underlying platform. For example, on the JVM,
Stringis an alias forjava.lang.String.