F.Option (playframework)

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play.libs
Class F.Option<T>

java.lang.Object
  play.libs.F.Option<T>

All Implemented Interfaces:: java.lang.Iterable<T>

Direct Known Subclasses:: F.None, F.Some

Enclosing class:: F

public abstract static class F.Option<T>
extends java.lang.Object
implements java.lang.Iterable<T>
extends java.lang.Object
implements java.lang.Iterable<T>

Represents optional values. Instances of Option are either an instance of Some or the object None.

Constructor Summary
`F.Option()`

Method Summary

abstract T get()
Returns the value if defined.

T getOrElse(T defaultValue)

abstract boolean isDefined()
Returns true if this value is defined.





<A> F.Option<A>

map(F.Function<T,A> f)

static



<T> F.None<T>

None()
Constructs a None value.

static



<T> F.Some<T>

Some(T value)
Construct a Some value.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface java.lang.Iterable
`iterator`

Constructor Detail

F.Option

public F.Option()

Method Detail

isDefined

public abstract boolean isDefined()

Returns true if this value is defined.

get

public abstract T get()

Returns the value if defined.

None

public static <T> F.None<T> None()

Constructs a None value.

Some

public static <T> F.Some<T> Some(T value)

Construct a Some value.

getOrElse

public T getOrElse(T defaultValue)

map

public <A> F.Option<A> map(F.Function<T,A> f)