Packages

  • package root

    This is the documentation for the Scala standard library.

    This is the documentation for the Scala standard library.

    Package structure

    The scala package contains core types like Int, Float, Array or Option which are accessible in all Scala compilation units without explicit qualification or imports.

    Notable packages include:

    Other 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.Predef object are always in scope by default.

    Some of these identifiers are type aliases provided as shortcuts to commonly used classes. For example, List is an alias for scala.collection.immutable.List.

    Other aliases refer to classes provided by the underlying platform. For example, on the JVM, String is an alias for java.lang.String.

    Definition Classes
    root
  • package scala

    Core Scala types.

    Core Scala types. They are always available without an explicit import.

    Definition Classes
    root
  • package collection
    Definition Classes
    scala
  • object ClassTagSeqFactory extends java.io.Serializable
    Definition Classes
    collection
  • AnySeqDelegate
  • Delegate

class AnySeqDelegate[CC[A] <: SeqOps[A, Seq, Seq[A]]] extends AnyIterableDelegate[CC] with SeqFactory[CC]

A SeqFactory that uses ClassTag.Any as the evidence for every element type. This may or may not be sound depending on the use of the ClassTag by the collection implementation.

Annotations
@SerialVersionUID()
Source
Factory.scala
Linear Supertypes
SeqFactory[CC], AnyIterableDelegate[CC], IterableFactory[CC], java.io.Serializable, AnyRef, Any
Type Hierarchy
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. AnySeqDelegate
  2. SeqFactory
  3. AnyIterableDelegate
  4. IterableFactory
  5. Serializable
  6. AnyRef
  7. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
  1. Hide All
  2. Show All
Visibility
  1. Public
  2. All

Instance Constructors

  1. new AnySeqDelegate(delegate: ClassTagSeqFactory[CC])

Value Members

  1. final def !=(arg0: Any): Boolean

    Test two objects for inequality.

    Test two objects for inequality.

    returns

    true if !(this == that), false otherwise.

    Definition Classes
    AnyRef → Any
  2. final def ##(): Int

    Equivalent to x.hashCode except for boxed numeric types and null.

    Equivalent to x.hashCode except for boxed numeric types and null. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them. For null returns a hashcode where null.hashCode throws a NullPointerException.

    returns

    a hash value consistent with ==

    Definition Classes
    AnyRef → Any
  3. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from AnySeqDelegate[CC] toany2stringadd[AnySeqDelegate[CC]] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (AnySeqDelegate[CC], B)
    Implicit
    This member is added by an implicit conversion from AnySeqDelegate[CC] toArrowAssoc[AnySeqDelegate[CC]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  5. final def ==(arg0: Any): Boolean

    The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).

    The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).

    returns

    true if the receiver object is equivalent to the argument; false otherwise.

    Definition Classes
    AnyRef → Any
  6. def apply[A](elems: A*): CC[A]

    Creates a collection with the specified elements.

    Creates a collection with the specified elements.

    A

    the type of the collection's elements

    elems

    the elements of the created collection

    returns

    a new collection with elements elems

    Definition Classes
    AnyIterableDelegateIterableFactory
  7. final def asInstanceOf[T0]: T0

    Cast the receiver object to be of type T0.

    Cast the receiver object to be of type T0.

    Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression 1.asInstanceOf[String] will throw a ClassCastException at runtime, while the expression List(1).asInstanceOf[List[String]] will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested type.

    returns

    the receiver object.

    Definition Classes
    Any
    Exceptions thrown

    ClassCastException if the receiver object is not an instance of the erasure of type T0.

  8. def clone(): AnyRef

    Create a copy of the receiver object.

    Create a copy of the receiver object.

    The default implementation of the clone method is platform dependent.

    returns

    a copy of the receiver object.

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @native() @throws(classOf[java.lang.CloneNotSupportedException])
    Note

    not specified by SLS as a member of AnyRef

  9. def concat[A](xss: Iterable[A]*): CC[A]

    Concatenates all argument collections into a single collection.

    Concatenates all argument collections into a single collection.

    xss

    the collections that are to be concatenated.

    returns

    the concatenation of all the collections.

    Definition Classes
    IterableFactory
  10. def empty[A]: CC[A]

    An empty collection

    An empty collection

    A

    the type of the collection's elements

    Definition Classes
    AnyIterableDelegateIterableFactory
  11. def ensuring(cond: (AnySeqDelegate[CC]) => Boolean, msg: => Any): AnySeqDelegate[CC]
    Implicit
    This member is added by an implicit conversion from AnySeqDelegate[CC] toEnsuring[AnySeqDelegate[CC]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  12. def ensuring(cond: (AnySeqDelegate[CC]) => Boolean): AnySeqDelegate[CC]
    Implicit
    This member is added by an implicit conversion from AnySeqDelegate[CC] toEnsuring[AnySeqDelegate[CC]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  13. def ensuring(cond: Boolean, msg: => Any): AnySeqDelegate[CC]
    Implicit
    This member is added by an implicit conversion from AnySeqDelegate[CC] toEnsuring[AnySeqDelegate[CC]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  14. def ensuring(cond: Boolean): AnySeqDelegate[CC]
    Implicit
    This member is added by an implicit conversion from AnySeqDelegate[CC] toEnsuring[AnySeqDelegate[CC]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  15. final def eq(arg0: AnyRef): Boolean

    Tests whether the argument (that) is a reference to the receiver object (this).

    Tests whether the argument (that) is a reference to the receiver object (this).

    The eq method implements an equivalence relation on non-null instances of AnyRef, and has three additional properties:

    • It is consistent: for any non-null instances x and y of type AnyRef, multiple invocations of x.eq(y) consistently returns true or consistently returns false.
    • For any non-null instance x of type AnyRef, x.eq(null) and null.eq(x) returns false.
    • null.eq(null) returns true.

    When overriding the equals or hashCode methods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2), they should be equal to each other (o1 == o2) and they should hash to the same value (o1.hashCode == o2.hashCode).

    returns

    true if the argument is a reference to the receiver object; false otherwise.

    Definition Classes
    AnyRef
  16. def equals(arg0: Any): Boolean

    The equality method for reference types.

    The equality method for reference types. Default implementation delegates to eq.

    See also equals in scala.Any.

    returns

    true if the receiver object is equivalent to the argument; false otherwise.

    Definition Classes
    AnyRef → Any
  17. def fill[A](n: Int)(elem: => A): CC[A]

    Produces a collection containing the results of some element computation a number of times.

    Produces a collection containing the results of some element computation a number of times.

    n

    the number of elements contained in the collection.

    elem

    the element computation

    returns

    A collection that contains the results of n evaluations of elem.

    Definition Classes
    AnyIterableDelegateIterableFactory
  18. def fill[A](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(elem: => A): CC[CC[CC[CC[CC[A]]]]]

    Produces a five-dimensional collection containing the results of some element computation a number of times.

    Produces a five-dimensional 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 collection that contains the results of n1 x n2 x n3 x n4 x n5 evaluations of elem.

    Definition Classes
    IterableFactory
  19. def fill[A](n1: Int, n2: Int, n3: Int, n4: Int)(elem: => A): CC[CC[CC[CC[A]]]]

    Produces a four-dimensional collection containing the results of some element computation a number of times.

    Produces a four-dimensional 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 collection that contains the results of n1 x n2 x n3 x n4 evaluations of elem.

    Definition Classes
    IterableFactory
  20. def fill[A](n1: Int, n2: Int, n3: Int)(elem: => A): CC[CC[CC[A]]]

    Produces a three-dimensional collection containing the results of some element computation a number of times.

    Produces a three-dimensional 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 collection that contains the results of n1 x n2 x n3 evaluations of elem.

    Definition Classes
    IterableFactory
  21. def fill[A](n1: Int, n2: Int)(elem: => A): CC[CC[A]]

    Produces a two-dimensional collection containing the results of some element computation a number of times.

    Produces a two-dimensional 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 collection that contains the results of n1 x n2 evaluations of elem.

    Definition Classes
    IterableFactory
  22. def finalize(): Unit

    Called by the garbage collector on the receiver object when there are no more references to the object.

    Called by the garbage collector on the receiver object when there are no more references to the object.

    The details of when and if the finalize method is invoked, as well as the interaction between finalize and non-local returns and exceptions, are all platform dependent.

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable])
    Note

    not specified by SLS as a member of AnyRef

  23. def formatted(fmtstr: String): String

    Returns string formatted according to given format string.

    Returns string formatted according to given format string. Format strings are as for String.format (@see java.lang.String.format).

    Implicit
    This member is added by an implicit conversion from AnySeqDelegate[CC] toStringFormat[AnySeqDelegate[CC]] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()
  24. def from[A](it: IterableOnce[A]): CC[A]

    Creates a target collection from an existing source collection

    Creates a target collection from an existing source collection

    A

    the type of the collection’s elements

    returns

    a new collection with the elements of source

    Definition Classes
    AnyIterableDelegateIterableFactory
  25. final def getClass(): Class[_]

    Returns the runtime class representation of the object.

    Returns the runtime class representation of the object.

    returns

    a class object corresponding to the runtime type of the receiver.

    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  26. def hashCode(): Int

    The hashCode method for reference types.

    The hashCode method for reference types. See hashCode in scala.Any.

    returns

    the hash code value for this object.

    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  27. final def isInstanceOf[T0]: Boolean

    Test whether the dynamic type of the receiver object is T0.

    Test whether the dynamic type of the receiver object is T0.

    Note that the result of the test is modulo Scala's erasure semantics. Therefore the expression 1.isInstanceOf[String] will return false, while the expression List(1).isInstanceOf[List[String]] will return true. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the specified type.

    returns

    true if the receiver object is an instance of erasure of type T0; false otherwise.

    Definition Classes
    Any
  28. implicit def iterableFactory[A]: Factory[A, CC[A]]
    Definition Classes
    IterableFactory
  29. def iterate[A](start: A, len: Int)(f: (A) => A): CC[A]

    Produces a collection containing repeated applications of a function to a start value.

    Produces a collection containing repeated applications of a function to a start value.

    start

    the start value of the collection

    len

    the number of elements contained in the collection

    f

    the function that's repeatedly applied

    returns

    a collection with len values in the sequence start, f(start), f(f(start)), ...

    Definition Classes
    AnyIterableDelegateIterableFactory
  30. final def ne(arg0: AnyRef): Boolean

    Equivalent to !(this eq that).

    Equivalent to !(this eq that).

    returns

    true if the argument is not a reference to the receiver object; false otherwise.

    Definition Classes
    AnyRef
  31. def newBuilder[A]: Builder[A, CC[A]]

    A

    the type of the collection’s elements

    returns

    A builder for Iterable objects.

    Definition Classes
    AnyIterableDelegateIterableFactory
  32. final def notify(): Unit

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Definition Classes
    AnyRef
    Annotations
    @native()
    Note

    not specified by SLS as a member of AnyRef

  33. final def notifyAll(): Unit

    Wakes up all threads that are waiting on the receiver object's monitor.

    Wakes up all threads that are waiting on the receiver object's monitor.

    Definition Classes
    AnyRef
    Annotations
    @native()
    Note

    not specified by SLS as a member of AnyRef

  34. def range[A](start: A, end: A, step: A)(implicit i: Integral[A]): CC[A]

    Produces a collection containing equally spaced values in some integer interval.

    Produces a collection containing equally spaced values in some integer interval.

    start

    the start value of the collection

    end

    the end value of the collection (the first value NOT contained)

    step

    the difference between successive elements of the collection (must be positive or negative)

    returns

    a collection with values start, start + step, ... up to, but excluding end

    Definition Classes
    AnyIterableDelegateIterableFactory
  35. def range[A](start: A, end: A)(implicit i: Integral[A]): CC[A]

    Produces a collection containing a sequence of increasing of integers.

    Produces a collection containing a sequence of increasing of integers.

    start

    the first element of the collection

    end

    the end value of the collection (the first value NOT contained)

    returns

    a collection with values start, start + 1, ..., end - 1

    Definition Classes
    AnyIterableDelegateIterableFactory
  36. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  37. def tabulate[A](n: Int)(f: (Int) => A): CC[A]

    Produces a collection containing values of a given function over a range of integer values starting from 0.

    Produces a collection containing values of a given function over a range of integer values starting from 0.

    n

    The number of elements in the collection

    f

    The function computing element values

    returns

    A collection consisting of elements f(0), ..., f(n -1)

    Definition Classes
    AnyIterableDelegateIterableFactory
  38. def tabulate[A](n1: Int, n2: Int, n3: Int, n4: Int, n5: Int)(f: (Int, Int, Int, Int, Int) => A): CC[CC[CC[CC[CC[A]]]]]

    Produces a five-dimensional collection containing values of a given function over ranges of integer values starting from 0.

    Produces a five-dimensional 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 collection consisting of elements f(i1, i2, i3, i4, i5) for 0 <= i1 < n1, 0 <= i2 < n2, 0 <= i3 < n3, 0 <= i4 < n4, and 0 <= i5 < n5.

    Definition Classes
    IterableFactory
  39. def tabulate[A](n1: Int, n2: Int, n3: Int, n4: Int)(f: (Int, Int, Int, Int) => A): CC[CC[CC[CC[A]]]]

    Produces a four-dimensional collection containing values of a given function over ranges of integer values starting from 0.

    Produces a four-dimensional 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 collection consisting of elements f(i1, i2, i3, i4) for 0 <= i1 < n1, 0 <= i2 < n2, 0 <= i3 < n3, and 0 <= i4 < n4.

    Definition Classes
    IterableFactory
  40. def tabulate[A](n1: Int, n2: Int, n3: Int)(f: (Int, Int, Int) => A): CC[CC[CC[A]]]

    Produces a three-dimensional collection containing values of a given function over ranges of integer values starting from 0.

    Produces a three-dimensional 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 collection consisting of elements f(i1, i2, i3) for 0 <= i1 < n1, 0 <= i2 < n2, and 0 <= i3 < n3.

    Definition Classes
    IterableFactory
  41. def tabulate[A](n1: Int, n2: Int)(f: (Int, Int) => A): CC[CC[A]]

    Produces a two-dimensional collection containing values of a given function over ranges of integer values starting from 0.

    Produces a two-dimensional 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 collection consisting of elements f(i1, i2) for 0 <= i1 < n1 and 0 <= i2 < n2.

    Definition Classes
    IterableFactory
  42. def toString(): String

    Creates a String representation of this object.

    Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.

    returns

    a String representation of the object.

    Definition Classes
    AnyRef → Any
  43. final def unapplySeq[A](x: CC[A]): UnapplySeqWrapper[A]
    Definition Classes
    SeqFactory
  44. def unfold[A, S](init: S)(f: (S) => Option[(A, S)]): CC[A]

    Produces a collection that uses a function f to produce elements of type A and update an internal state of type S.

    Produces a collection that uses a function f to produce elements of type A and update an internal state of type S.

    A

    Type of the elements

    S

    Type of the internal state

    init

    State initial value

    f

    Computes the next element (or returns None to signal the end of the collection)

    returns

    a collection that produces elements using f until f returns None

    Definition Classes
    AnyIterableDelegateIterableFactory
  45. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  46. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  47. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @throws(classOf[java.lang.InterruptedException])

Deprecated Value Members

  1. def [B](y: B): (AnySeqDelegate[CC], B)
    Implicit
    This member is added by an implicit conversion from AnySeqDelegate[CC] toArrowAssoc[AnySeqDelegate[CC]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use -> instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

Inherited from SeqFactory[CC]

Inherited from AnyIterableDelegate[CC]

Inherited from IterableFactory[CC]

Inherited from java.io.Serializable

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd fromAnySeqDelegate[CC] to any2stringadd[AnySeqDelegate[CC]]

Inherited by implicit conversion StringFormat fromAnySeqDelegate[CC] to StringFormat[AnySeqDelegate[CC]]

Inherited by implicit conversion Ensuring fromAnySeqDelegate[CC] to Ensuring[AnySeqDelegate[CC]]

Inherited by implicit conversion ArrowAssoc fromAnySeqDelegate[CC] to ArrowAssoc[AnySeqDelegate[CC]]

Ungrouped