Packages

object Extractor extends LowPriorityExtractor

Utilities to convert between A => Option[B], scala.PartialFunction and Extractor.

Source
Extractor.scala
Example: 

  1. import com.thoughtworks.Extractor._

// Define a PartialFunction
val pf: PartialFunction[Int, String] = {
  case 1 => "matched by PartialFunction"
}

// Define an optional function
val f: Int => Option[String] = { i =>
  if (i == 2) {
    Some("matched by optional function")
  } else {
    None
  }
}

// Convert an optional function to a PartialFunction
val pf2: PartialFunction[Int, String] = Function.unlift(f)

util.Random.nextInt(4) match {
  case pf.extract(m) => // Convert a PartialFunction to a pattern
    println(m)
  case f.extract(m) => // Convert an optional function to a pattern
    println(m)
  case pf2.extract(m) => // Convert a PartialFunction to a pattern
    throw new AssertionError("This case should never occur because it has the same condition as `f.extract`.")
  case _ =>
    println("Not matched")
}
Linear Supertypes
LowPriorityExtractor, LowLowPriorityExtractor, AnyRef, Any
Ordering
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Inherited
  1. Extractor
  2. LowPriorityExtractor
  3. LowLowPriorityExtractor
  4. AnyRef
  5. Any
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Visibility
  1. Public
  2. All

Type Members

  1. implicit final class FunctionToExtractor[-A, +B] extends AnyRef
    Definition Classes
    LowLowPriorityExtractor
  2. implicit final class OptionFunctionToExtractor[-A, +B] extends AnyRef
    Definition Classes
    LowPriorityExtractor
  3. implicit final class OptionFunctionToSeqExtractor[-A, +B] extends AnyRef
    Definition Classes
    LowPriorityExtractor
  4. implicit final class PartialFunctionToExtractor[-A, +B] extends AnyRef
  5. sealed trait SeqExtractor[-A, +B] extends AnyRef
    Definition Classes
    LowPriorityExtractor

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  5. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native() @HotSpotIntrinsicCandidate()
  6. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  7. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  8. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  9. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  10. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  11. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  12. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  13. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  14. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  15. def toString(): String
    Definition Classes
    AnyRef → Any
  16. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  17. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  18. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] ) @Deprecated @deprecated
    Deprecated

    (Since version ) see corresponding Javadoc for more information.

Inherited from LowPriorityExtractor

Inherited from LowLowPriorityExtractor

Inherited from AnyRef

Inherited from Any

Ungrouped