Option

scala.Option$
See theOption companion class
object Option

Attributes

Companion:
class
Source:
Option.scala
Graph
Supertypes
trait Sum
trait Mirror
class Object
trait Matchable
class Any
Self type
Option.type

Members list

Concise view

Type members

Inherited types

The names of the product elements

The names of the product elements

Attributes

Inherited from:
Mirror
Source:
Mirror.scala

The name of the type

The name of the type

Attributes

Inherited from:
Mirror
Source:
Mirror.scala

Value members

Concrete methods

def apply[A](x: A): Option[A]

An Option factory which creates Some(x) if the argument is not null, and None if it is null.

An Option factory which creates Some(x) if the argument is not null, and None if it is null.

Attributes

x

the value

Returns:

Some(value) if value != null, None if value == null

Source:
Option.scala
def empty[A]: Option[A]

An Option factory which returns None in a manner consistent with the collections hierarchy.

An Option factory which returns None in a manner consistent with the collections hierarchy.

Attributes

Source:
Option.scala
def unless[A](cond: Boolean)(a: => A): Option[A]

Unless a given condition is true, this will evaluate the a argument and return Some(a).

Unless a given condition is true, this will evaluate the a argument and return Some(a). Otherwise, a is not evaluated and None is returned.

Attributes

Source:
Option.scala
def when[A](cond: Boolean)(a: => A): Option[A]

When a given condition is true, evaluates the a argument and returns Some(a).

When a given condition is true, evaluates the a argument and returns Some(a). When the condition is false, a is not evaluated and None is returned.

Attributes

Source:
Option.scala

Implicits

Implicits

implicit def option2Iterable[A](xo: Option[A]): Iterable[A]

An implicit conversion that converts an option to an iterable value

An implicit conversion that converts an option to an iterable value

Attributes

Source:
Option.scala