Value Members

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

   Definition Classes

   Any

2.  final def ##(): Int

   Definition Classes

   Any

3.  def +(other: String): String

   Implicit

   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

   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): 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 the result of applying pf to this UndefOr's contained value, if this option is nonempty and pf is defined for that value.

   Returns the result of applying pf to this UndefOr's contained value, if this option is nonempty and pf is defined for that value. Returns undefined otherwise.

   pf

   the partial function.

   returns

   the result of applying pf to this UndefOr's value (if possible), or undefined.

   Annotations

   @inline()

8.  final def contains[A1 >: A](elem: A1): Boolean

   Tests whether the UndefOr contains a given value as an element.

   Tests whether the UndefOr contains a given value as an element.

   x.contains(y) differs from x == y only in the fact that it will return false when x and y are both undefined.

   elem

   the element to test.

   returns

   true if the UndefOr has an element that is equal (as determined by ==) to elem, false otherwise.

   Annotations

   @inline()

9.  def ensuring(cond: (UndefOrOps[A]) ⇒ Boolean, msg: ⇒ scala.Any): UndefOrOps[A]

   Implicit

   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: (UndefOrOps[A]) ⇒ Boolean): UndefOrOps[A]

    Implicit

    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: Boolean, msg: ⇒ scala.Any): UndefOrOps[A]

    Implicit

    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.  def ensuring(cond: Boolean): UndefOrOps[A]

    Implicit

    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

13.  final def exists(p: (A) ⇒ Boolean): Boolean

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

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

    p

    the predicate to test

    Annotations

    @inline()

14.  final def filter(p: (A) ⇒ Boolean): UndefOr[A]

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

    Returns this UndefOr if it is nonempty and applying the predicate p to this UndefOr's value returns true. Otherwise, return undefined.

    p

    the predicate used for testing.

    Annotations

    @inline()

15.  final def filterNot(p: (A) ⇒ Boolean): UndefOr[A]

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

    Returns this UndefOr if it is nonempty and applying the predicate p to this UndefOr's value returns false. Otherwise, return undefined.

    p

    the predicate used for testing.

    Annotations

    @inline()

16.  final def flatMap[B](f: (A) ⇒ UndefOr[B]): UndefOr[B]

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

    Returns the result of applying f to this UndefOr's value if this UndefOr is nonempty. Returns undefined if this UndefOr is empty. Slightly different from map in that f is expected to return an UndefOr (which could be undefined).

    f

    the function to apply

    Annotations

    @inline()

    See also

    map

    foreach

17.  def flatten[B](implicit ev: <:<[A, UndefOr[B]]): UndefOr[B]
18.  final def fold[B](ifEmpty: ⇒ B)(f: (A) ⇒ B): B

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

    Returns the result of applying f to this UndefOr's value if the UndefOr 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 UndefOr map f getOrElse ifEmpty.

19.  final def forall(p: (A) ⇒ Boolean): Boolean

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

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

    p

    the predicate to test

    Annotations

    @inline()

20.  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

    map

    flatMap

21.  def formatted(fmtstr: String): String

    Implicit

    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()

22.  final def get: A

    Returns the option's value.

    Returns the option's value.

    Annotations

    @inline()

    Exceptions thrown

    java.util.NoSuchElementException if the option is empty.

    Note

    The option must be nonEmpty.

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

    Definition Classes

    AnyVal → Any

24.  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()

25.  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()

26.  final def isEmpty: Boolean

    Returns true if the option is undefined, false otherwise.

    Returns true if the option is undefined, false otherwise.

    Annotations

    @inline()

27.  final def isInstanceOf[T0]: Boolean

    Definition Classes

    Any

28.  def iterator: collection.Iterator[A]

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

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

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

    Returns the result of applying f to this UndefOr's value if this UndefOr is nonempty. Otherwise return undefined.

    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 UndefOr.

    See also

    flatMap

    foreach

30.  final def nonEmpty: Boolean

    Returns false if the option is undefined, true otherwise.

    Returns false if the option is undefined, true otherwise.

    Note

    Implemented here to avoid the implicit conversion to Iterable.

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

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

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

    alternative

    the alternative expression.

    Annotations

    @inline()

32.  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 UndefOr 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)

33.  val self: UndefOr[A]
34.  final def toLeft[X](right: ⇒ X): Either[A, X]

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

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

    right

    the expression to evaluate and return if this is empty

    Annotations

    @inline()

    See also

    toRight

35.  def toList: List[A]

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

36.  final def toOption: Option[A]

    Returns a Some containing this UndefOr's value if this UndefOr is nonempty, None otherwise.

    Returns a Some containing this UndefOr's value if this UndefOr is nonempty, None otherwise.

    Annotations

    @inline()

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

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

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

    left

    the expression to evaluate and return if this is empty

    Annotations

    @inline()

    See also

    toLeft

38.  def toString(): String

    Definition Classes

    Any

39.  final def withFilter(p: (A) ⇒ Boolean): WithFilter[A]

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

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

    Annotations

    @inline()

40.  def →[B](y: B): (UndefOrOps[A], B)

    Implicit

    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