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java.lang.Objectakka.japi.Option<A>
public abstract class Option<A>
This class represents optional values. Instances of Option
are either instances of case class Some or it is case
object None.
| Nested Class Summary | |
|---|---|
static class |
Option.Some<A>
Class Some[A] represents existing values of type
A. |
static class |
Option.Some$
|
| Constructor Summary | |
|---|---|
Option()
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| Method Summary | ||
|---|---|---|
abstract scala.Option<A> |
asScala()
|
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static
|
fromScalaOption(scala.Option<T> scalaOption)
Converts a Scala Option to a Java Option |
|
abstract A |
get()
|
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abstract
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getOrElse(B defaultValue)
Returns a if this is some(a) or defaultValue if
this is none. |
|
boolean |
isDefined()
|
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abstract boolean |
isEmpty()
|
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java.util.Iterator<A> |
iterator()
|
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static
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java2ScalaOption(Option<A> o)
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static
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none()
Option factory that creates None |
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static
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option(A v)
Option factory that creates None if
v is null, Some(v) otherwise. |
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static
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scala2JavaOption(scala.Option<A> o)
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static
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some(A v)
Option factory that creates Some |
|
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public Option()
| Method Detail |
|---|
public static <A> Option<A> some(A v)
Option factory that creates Some
v - (undocumented)
public static <A> Option<A> none()
Option factory that creates None
public static <A> Option<A> option(A v)
Option factory that creates None if
v is null, Some(v) otherwise.
v - (undocumented)
public static <T> Option<T> fromScalaOption(scala.Option<T> scalaOption)
scalaOption - (undocumented)
public static <A> scala.Option<A> java2ScalaOption(Option<A> o)
public static <A> Option<A> scala2JavaOption(scala.Option<A> o)
public abstract A get()
public abstract <B> B getOrElse(B defaultValue)
a if this is some(a) or defaultValue if
this is none.
defaultValue - (undocumented)
public abstract boolean isEmpty()
public boolean isDefined()
public abstract scala.Option<A> asScala()
public java.util.Iterator<A> iterator()
iterator in interface java.lang.Iterable<A>
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