Packages

  • package root
    Definition Classes
    root
  • package scala
    Definition Classes
    root
  • package scalajs
    Definition Classes
    scala
  • package js

    Types, methods and values for interoperability with JavaScript libraries.

    Types, methods and values for interoperability with JavaScript libraries.

    This package is only relevant to the Scala.js compiler, and should not be referenced by any project compiled to the JVM.

    Guide

    General documentation on Scala.js is available at http://www.scala-js.org/doc/.

    Overview

    The trait js.Any is the root of the hierarchy of JavaScript types. This package defines important subtypes of js.Any that are defined in the standard library of ECMAScript 5.1 (or ES 6, with a label in the documentation), such as js.Object, js.Array and js.RegExp.

    Implicit conversions to and from standard Scala types to their equivalent in JavaScript are provided. For example, from Scala functions to JavaScript functions and back.

    The most important subtypes of js.Any declared in this package are:

    The trait js.Dynamic is a special subtrait of js.Any. It can represent any JavaScript value in a dynamically-typed way. It is possible to call any method and read and write any field of a value of type js.Dynamic.

    There are no explicit definitions for JavaScript primitive types, as one could expect, because the corresponding Scala types stand in their stead:

    • Boolean is the type of primitive JavaScript booleans
    • Double is the type of primitive JavaScript numbers
    • String is the type of primitive JavaScript strings (or null)
    • Unit is the type of the JavaScript undefined value
    • Null is the type of the JavaScript null value

    js.UndefOr gives a scala.Option-like interface where the JavaScript value undefined takes the role of None.

    A | B is an unboxed pseudo-union type, suitable to type values that admit several unrelated types in facade types.

    Definition Classes
    scalajs
  • object UndefOrOps
    Definition Classes
    js
  • WithFilter

final class WithFilter[A] extends AnyRef

We need a whole WithFilter class to honor the "doesn't create a new collection" contract even though it seems unlikely to matter much in a collection with max size 1.

Linear Supertypes
AnyRef, scala.Any
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. WithFilter
  2. AnyRef
  3. 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 WithFilter(self: UndefOr[A], p: (A) ⇒ Boolean)

Value Members

  1. final def !=(arg0: scala.Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from WithFilter[A] to any2stringadd[WithFilter[A]] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (WithFilter[A], B)
    Implicit
    This member is added by an implicit conversion from WithFilter[A] to ArrowAssoc[WithFilter[A]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  5. final def ==(arg0: scala.Any): Boolean
    Definition Classes
    AnyRef → Any
  6. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  7. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  8. def ensuring(cond: (WithFilter[A]) ⇒ Boolean, msg: ⇒ scala.Any): WithFilter[A]
    Implicit
    This member is added by an implicit conversion from WithFilter[A] to Ensuring[WithFilter[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  9. def ensuring(cond: (WithFilter[A]) ⇒ Boolean): WithFilter[A]
    Implicit
    This member is added by an implicit conversion from WithFilter[A] to Ensuring[WithFilter[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  10. def ensuring(cond: Boolean, msg: ⇒ scala.Any): WithFilter[A]
    Implicit
    This member is added by an implicit conversion from WithFilter[A] to Ensuring[WithFilter[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  11. def ensuring(cond: Boolean): WithFilter[A]
    Implicit
    This member is added by an implicit conversion from WithFilter[A] to Ensuring[WithFilter[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  12. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  13. def equals(arg0: scala.Any): Boolean
    Definition Classes
    AnyRef → Any
  14. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  15. def flatMap[B](f: (A) ⇒ UndefOr[B]): UndefOr[B]
  16. def foreach[U](f: (A) ⇒ U): Unit
  17. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  18. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  19. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  20. def map[B](f: (A) ⇒ B): UndefOr[B]
  21. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  22. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  23. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  24. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  25. def toString(): String
    Definition Classes
    AnyRef → Any
  26. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  27. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  28. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  29. def withFilter(q: (A) ⇒ Boolean): WithFilter[A]
  30. def →[B](y: B): (WithFilter[A], B)
    Implicit
    This member is added by an implicit conversion from WithFilter[A] to ArrowAssoc[WithFilter[A]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Deprecated Value Members

  1. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from WithFilter[A] to StringFormat[WithFilter[A]] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.12.16) Use formatString.format(value) instead of value.formatted(formatString), or use the f"" string interpolator. In Java 15 and later, formatted resolves to the new method in String which has reversed parameters.

Inherited from AnyRef

Inherited from scala.Any

Inherited by implicit conversion any2stringadd from WithFilter[A] to any2stringadd[WithFilter[A]]

Inherited by implicit conversion StringFormat from WithFilter[A] to StringFormat[WithFilter[A]]

Inherited by implicit conversion Ensuring from WithFilter[A] to Ensuring[WithFilter[A]]

Inherited by implicit conversion ArrowAssoc from WithFilter[A] to ArrowAssoc[WithFilter[A]]

Ungrouped