org.feijoas.mango.common.base

Optional

Related Doc: package base

object Optional

Utility functions for the work with Option[T] and Optional[T]

Usage example for conversion between Guava and Mango:

// convert a Guava Optional[T] to a Scala Option[T]
Optional.of("some").asScala
Optional.absent().asScala

// convert a Scala Option[T] to a Guava Optional[T]
Some("some").asJava
None.asJava
Since

0.7

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

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  2. final def ##(): Int

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

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  4. implicit def asGuavaOptionalConverter[T](option: Option[T]): AsJava[Optional[T]]

    Adds an asJava method that converts a Scala Option[T] to a Guava Optional[T].

    Adds an asJava method that converts a Scala Option[T] to a Guava Optional[T].

    The returned Guava Optional[T] contains the same reference as in the Scala Option[T] or GuavaOptional.absent() if the Option[T] is None.

    option

    the Scala Option[T] to convert to a Guava Optional[T]

    returns

    An object with an asJava method that returns a Guava Optional[T] view of the argument

  5. final def asInstanceOf[T0]: T0

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  6. implicit def asMangoOptionConverter[T](option: Optional[T]): AsScala[Option[T]]

    Adds an asScala method that converts a Guava Optional[T] to a Scala Option[T].

    Adds an asScala method that converts a Guava Optional[T] to a Scala Option[T].

    The returned Scala Option[T] contains the same reference as in the Guava Optional[T] or None if the Optional[T] is absent.

    option

    the Guava Optional[T] to convert to a Scala Option[T]

    returns

    An object with an asScala method that returns a Scala Option[T] view of the argument

  7. def clone(): AnyRef

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  8. final def eq(arg0: AnyRef): Boolean

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  9. def equals(arg0: Any): Boolean

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  10. def finalize(): Unit

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  11. final def getClass(): Class[_]

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  12. def hashCode(): Int

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  13. final def isInstanceOf[T0]: Boolean

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  14. final def ne(arg0: AnyRef): Boolean

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  15. final def notify(): Unit

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  16. final def notifyAll(): Unit

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  17. final def synchronized[T0](arg0: ⇒ T0): T0

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  18. def toString(): String

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  19. final def wait(): Unit

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  20. final def wait(arg0: Long, arg1: Int): Unit

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  21. final def wait(arg0: Long): Unit

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