UndefOrOps

Instance Constructors

new UndefOrOps(self: UndefOr[A])

Value Members

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

Definition Classes
Any
final def ##(): Int

Definition Classes
Any
def +(other: String): 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
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()
final def ==(arg0: scala.Any): Boolean

Definition Classes
Any
final def asInstanceOf[T0]: T0

Definition Classes
Any
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()
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()
def ensuring(cond: (UndefOrOps[A]) ⇒ 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
def ensuring(cond: (UndefOrOps[A]) ⇒ 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
def ensuring(cond: 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
def ensuring(cond: 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
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()
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()
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()
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
foreach
map
def flatten[B](implicit ev: <:<[A, UndefOr[B]]): UndefOr[B]
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.
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()
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
def formatted(fmtstr: String): 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()
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.
def getClass(): Class[_ <: AnyVal]

Definition Classes
AnyVal → Any
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()
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()
final def isEmpty: Boolean

Returns true if the option is undefined, false otherwise.
Returns true if the option is undefined, false otherwise.

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

Definition Classes
Any
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.
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
foreach
flatMap
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.
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()
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)
val self: UndefOr[A]
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
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.
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()
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
def toString(): String

Definition Classes
Any
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()
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

Related Docs: object UndefOrOps | package js

final class UndefOrOps[A] extends AnyVal

Instance Constructors

new UndefOrOps(self: UndefOr[A])

Value Members

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

final def ##(): Int

def +(other: String): String

def ->[B](y: B): (UndefOrOps[A], B)

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

final def asInstanceOf[T0]: T0

final def collect[B](pf: PartialFunction[A, B]): UndefOr[B]

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

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

def ensuring(cond: (UndefOrOps[A]) ⇒ Boolean): UndefOrOps[A]

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

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

final def exists(p: (A) ⇒ Boolean): Boolean

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

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

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

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

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

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

final def foreach[U](f: (A) ⇒ U): Unit

def formatted(fmtstr: String): String

final def get: A

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

final def getOrElse[B >: A](default: ⇒ B): B

final def isDefined: Boolean

final def isEmpty: Boolean

final def isInstanceOf[T0]: Boolean

def iterator: collection.Iterator[A]

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

final def nonEmpty: Boolean

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

final def orNull[A1 >: A](implicit ev: <:<[Null, A1]): A1

val self: UndefOr[A]

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

def toList: List[A]

final def toOption: Option[A]

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

def toString(): String

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

def →[B](y: B): (UndefOrOps[A], B)

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