scala.scalajs.js

UndefOrOps

final class UndefOrOps[A] extends AnyVal

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AnyVal, scala.Any
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Inherited
  1. UndefOrOps
  2. AnyVal
  3. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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  1. Public
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Instance Constructors

  1. new UndefOrOps(self: UndefOr[A])

Value Members

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

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

    Definition Classes
    Any
  3. def +(other: Predef.String): Predef.String

    Implicit information
    This member is added by an implicit conversion from UndefOrOps[A] to any2stringadd[UndefOrOps[A]] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (UndefOrOps[A], B)

    Implicit information
    This member is added by an implicit conversion from UndefOrOps[A] to ArrowAssoc[UndefOrOps[A]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  5. final def ==(arg0: scala.Any): scala.Boolean

    Definition Classes
    Any
  6. final def asInstanceOf[T0]: T0

    Definition Classes
    Any
  7. final def collect[B](pf: PartialFunction[A, B]): UndefOr[B]

    Returns a $some containing the result of applying pf to this $option's contained value, if this option is nonempty and pf is defined for that value.

    Returns a $some containing the result of applying pf to this $option's contained value, if this option is nonempty and pf is defined for that value. Returns $none otherwise.

    pf

    the partial function.

    returns

    the result of applying pf to this $option's value (if possible), or $none.

    Annotations
    @inline()
  8. def ensuring(cond: (UndefOrOps[A]) ⇒ scala.Boolean, msg: ⇒ scala.Any): UndefOrOps[A]

    Implicit information
    This member is added by an implicit conversion from UndefOrOps[A] to Ensuring[UndefOrOps[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  9. def ensuring(cond: (UndefOrOps[A]) ⇒ scala.Boolean): UndefOrOps[A]

    Implicit information
    This member is added by an implicit conversion from UndefOrOps[A] to Ensuring[UndefOrOps[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  10. def ensuring(cond: scala.Boolean, msg: ⇒ scala.Any): UndefOrOps[A]

    Implicit information
    This member is added by an implicit conversion from UndefOrOps[A] to Ensuring[UndefOrOps[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  11. def ensuring(cond: scala.Boolean): UndefOrOps[A]

    Implicit information
    This member is added by an implicit conversion from UndefOrOps[A] to Ensuring[UndefOrOps[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  12. final def exists(p: (A) ⇒ Boolean): Boolean

    Returns true if this option is nonempty and the predicate $p returns true when applied to this $option's value.

    Returns true if this option is nonempty and the predicate $p returns true when applied to this $option's value. Otherwise, returns false.

    p

    the predicate to test

    Annotations
    @inline()
  13. final def filter(p: (A) ⇒ Boolean): UndefOr[A]

    Returns this $option if it is nonempty and applying the predicate $p to this $option's value returns true.

    Returns this $option if it is nonempty and applying the predicate $p to this $option's value returns true. Otherwise, return $none.

    p

    the predicate used for testing.

    Annotations
    @inline()
  14. final def filterNot(p: (A) ⇒ Boolean): UndefOr[A]

    Returns this $option if it is nonempty and applying the predicate $p to this $option's value returns false.

    Returns this $option if it is nonempty and applying the predicate $p to this $option's value returns false. Otherwise, return $none.

    p

    the predicate used for testing.

    Annotations
    @inline()
  15. final def flatMap[B](f: (A) ⇒ UndefOr[B]): UndefOr[B]

    Returns the result of applying $f to this $option's value if this $option is nonempty.

    Returns the result of applying $f to this $option's value if this $option is nonempty. Returns $none if this $option is empty. Slightly different from map in that $f is expected to return an $option (which could be $none).

    f

    the function to apply

    Annotations
    @inline()
    See also

    foreach

    map

  16. def flatten[B](implicit ev: <:<[A, UndefOr[B]]): UndefOr[B]

  17. final def fold[B](ifEmpty: ⇒ B)(f: (A) ⇒ B): B

    Returns the result of applying $f to this $option's value if the $option is nonempty.

    Returns the result of applying $f to this $option's value if the $option is nonempty. Otherwise, evaluates expression ifEmpty.

    ifEmpty

    the expression to evaluate if empty.

    f

    the function to apply if nonempty.

    Annotations
    @inline()
    Note

    This is equivalent to $option map f getOrElse ifEmpty.

  18. final def forall(p: (A) ⇒ Boolean): Boolean

    Returns true if this option is empty or the predicate $p returns true when applied to this $option's value.

    Returns true if this option is empty or the predicate $p returns true when applied to this $option's value.

    p

    the predicate to test

    Annotations
    @inline()
  19. final def foreach[U](f: (A) ⇒ U): Unit

    Apply the given procedure $f to the option's value, if it is nonempty.

    Apply the given procedure $f to the option's value, if it is nonempty. Otherwise, do nothing.

    f

    the procedure to apply.

    Annotations
    @inline()
    See also

    flatMap

    map

  20. def formatted(fmtstr: Predef.String): Predef.String

    Implicit information
    This member is added by an implicit conversion from UndefOrOps[A] to StringFormat[UndefOrOps[A]] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()
  21. final def get: A

    Returns the option's value.

    Returns the option's value.

    Annotations
    @inline()
    Exceptions thrown
    Predef.NoSuchElementException

    if the option is empty.

    Note

    The option must be nonEmpty.

  22. def getClass(): Class[_ <: AnyVal]

    Definition Classes
    AnyVal → Any
  23. final def getOrElse[B >: A](default: ⇒ B): B

    Returns the option's value if the option is nonempty, otherwise return the result of evaluating default.

    Returns the option's value if the option is nonempty, otherwise return the result of evaluating default.

    default

    the default expression.

    Annotations
    @inline()
  24. final def isDefined: Boolean

    Returns true if the option is not undefined, false otherwise.

    Returns true if the option is not undefined, false otherwise.

    Annotations
    @inline()
  25. final def isEmpty: Boolean

    Returns true if the option is undefined, false otherwise.

    Returns true if the option is undefined, false otherwise.

    Annotations
    @inline()
  26. final def isInstanceOf[T0]: scala.Boolean

    Definition Classes
    Any
  27. def iterator: Iterator[A]

    Returns a singleton iterator returning the $option's value if it is nonempty, or an empty iterator if the option is empty.

  28. final def map[B](f: (A) ⇒ B): UndefOr[B]

    Returns a $some containing the result of applying $f to this $option's value if this $option is nonempty.

    Returns a $some containing the result of applying $f to this $option's value if this $option is nonempty. Otherwise return $none.

    f

    the function to apply

    Annotations
    @inline()
    Note

    This is similar to flatMap except here, $f does not need to wrap its result in an $option.

    See also

    foreach

    flatMap

  29. final def nonEmpty: Boolean

    Returns false if the option is $none, true otherwise.

    Returns false if the option is $none, true otherwise.

    Note

    Implemented here to avoid the implicit conversion to Iterable.

  30. final def orElse[B >: A](alternative: ⇒ UndefOr[B]): UndefOr[B]

    Returns this $option if it is nonempty, otherwise return the result of evaluating alternative.

    Returns this $option if it is nonempty, otherwise return the result of evaluating alternative.

    alternative

    the alternative expression.

    Annotations
    @inline()
  31. final def orNull[A1 >: A](implicit ev: <:<[Null, A1]): A1

    Returns the option's value if it is nonempty, or null if it is empty.

    Returns the option's value if it is nonempty, or null if it is empty. Although the use of null is discouraged, code written to use $option must often interface with code that expects and returns nulls.

    Annotations
    @inline()
    Example:
    1. val initalText: Option[String] = getInitialText
      val textField = new JComponent(initalText.orNull,20)
  32. val self: UndefOr[A]

  33. final def toLeft[X](right: ⇒ X): Either[A, X]

    Returns a scala.util.Right containing the given argument right if this is empty, or a scala.util.Left containing this $option's value if this $option is nonempty.

    Returns a scala.util.Right containing the given argument right if this is empty, or a scala.util.Left containing this $option's value if this $option is nonempty.

    right

    the expression to evaluate and return if this is empty

    Annotations
    @inline()
    See also

    toRight

  34. def toList: List[A]

    Returns a singleton list containing the $option's value if it is nonempty, or the empty list if the $option is empty.

  35. final def toRight[X](left: ⇒ X): Either[X, A]

    Returns a scala.util.Left containing the given argument left if this $option is empty, or a scala.util.Right containing this $option's value if this is nonempty.

    Returns a scala.util.Left containing the given argument left if this $option is empty, or a scala.util.Right containing this $option's value if this is nonempty.

    left

    the expression to evaluate and return if this is empty

    Annotations
    @inline()
    See also

    toLeft

  36. def toString(): java.lang.String

    Definition Classes
    Any
  37. final def withFilter(p: (A) ⇒ Boolean): WithFilter[A]

    Necessary to keep $option from being implicitly converted to scala.collection.Iterable in for comprehensions.

    Necessary to keep $option from being implicitly converted to scala.collection.Iterable in for comprehensions.

    Annotations
    @inline()
  38. def [B](y: B): (UndefOrOps[A], B)

    Implicit information
    This member is added by an implicit conversion from UndefOrOps[A] to ArrowAssoc[UndefOrOps[A]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Inherited from AnyVal

Inherited from scala.Any

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

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

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

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

Ungrouped