Scala 3/API/scala/Option

Option

object Option
Companion
class
Source
Option.scala
trait Sum
trait Mirror
class Object
trait Matchable
class Any

Type members

Inherited types

type MirroredElemLabels <: Tuple

The names of the product elements

Inherited from
Mirror
type MirroredLabel <: String

The name of the type

Inherited from
Mirror

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.

Value Params
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.

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). Otherwise, a is not evaluated and None is returned.

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 the condition is false, a is not evaluated and None is returned.

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

Source
Option.scala