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.swing - A convenient wrapper around Java's GUI framework called Swing (scala-swing.jar)
    • scala.util.parsing - Parser combinators, including an example implementation of a JSON parser (scala-parser-combinators.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
  • abstract class Enumeration extends Serializable

    Defines a finite set of values specific to the enumeration.

    Defines a finite set of values specific to the enumeration. Typically these values enumerate all possible forms something can take and provide a lightweight alternative to case classes.

    Each call to a Value method adds a new unique value to the enumeration. To be accessible, these values are usually defined as val members of the evaluation.

    All values in an enumeration share a common, unique type defined as the Value type member of the enumeration (Value selected on the stable identifier path of the enumeration instance).

    Definition Classes
    scala
    Annotations
    @SerialVersionUID()
    Example: 

    1. object Main extends App {

  object WeekDay extends Enumeration {
    type WeekDay = Value
    val Mon, Tue, Wed, Thu, Fri, Sat, Sun = Value
  }
  import WeekDay._

  def isWorkingDay(d: WeekDay) = ! (d == Sat || d == Sun)

  WeekDay.values filter isWorkingDay foreach println
}
// output:
// Mon
// Tue
// Wed
// Thu
// Fri
  • Val
  • Value
  • ValueOrdering
  • ValueSet

object ValueSet extends Serializable

A factory object for value sets

Source
Enumeration.scala
Linear Supertypes
Serializable, java.io.Serializable, AnyRef, Any
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. ValueSet
  2. Serializable
  3. Serializable
  4. AnyRef
  5. Any
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Visibility
  1. Public
  2. All

Value Members

  1. def apply(elems: Value*): ValueSet

    A value set consisting of given elements

  2. implicit def canBuildFrom: CanBuildFrom[ValueSet, Value, ValueSet]

    The implicit builder for value sets

  3. val empty: ValueSet

    The empty value set

  4. def fromBitMask(elems: Array[Long]): ValueSet

    A value set containing all the values for the zero-adjusted ids corresponding to the bits in an array

  5. def newBuilder: Builder[Value, ValueSet]

    A builder object for value sets