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org.rogach.scallop

ValueConverter

trait ValueConverter[A] extends AnyRef

Converter from list of plain strings to something meaningful.

Self Type
ValueConverter[A]
Source
ValueConverter.scala
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Abstract Value Members

  1. abstract val argType: V

    Type of parsed argument list.

  2. abstract def parse(s: List[(String, List[String])]): Either[String, Option[A]]

    Takes a list of arguments to all option invocations: for example, "-a 1 2 -a 3 4 5" would produce List(("a",List(1,2)),("a",List(3,4,5))).

    Takes a list of arguments to all option invocations: for example, "-a 1 2 -a 3 4 5" would produce List(("a",List(1,2)),("a",List(3,4,5))).

    • parse returns Left, if there was an error while parsing.
    • if no option was found, it returns Right(None).
    • if option was found, it returns Right(...).

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
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  2. final def ##(): Int
    Definition Classes
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  3. final def ==(arg0: Any): Boolean
    Definition Classes
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  4. def argFormat(name: String): String

    Transformation of argument name to argument definition in help.

  5. final def asInstanceOf[T0]: T0
    Definition Classes
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  6. def clone(): AnyRef
    Attributes
    protected[lang]
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    @throws( ... ) @native()
  7. final def eq(arg0: AnyRef): Boolean
    Definition Classes
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  8. def equals(arg0: Any): Boolean
    Definition Classes
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  9. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
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    Annotations
    @throws( classOf[java.lang.Throwable] )
  10. def flatMap[B](fn: (A) ⇒ Either[String, Option[B]]): ValueConverter[B]

    Map the converter to another value.

    Map the converter to another value. This method is different from .map because it can return an error (without resorting to exceptions, returning Left(msg)) or can filter out unsupported values (by returning Right(None)).

  11. final def getClass(): Class[_]
    Definition Classes
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    @native()
  12. def hashCode(): Int
    Definition Classes
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    @native()
  13. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  14. def map[B](fn: (A) ⇒ B): ValueConverter[B]

    Maps the converter to another value:

    Maps the converter to another value:

    intConverter.map(_+2) // and you get a "biased converter"
  15. final def ne(arg0: AnyRef): Boolean
    Definition Classes
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  16. final def notify(): Unit
    Definition Classes
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    Annotations
    @native()
  17. final def notifyAll(): Unit
    Definition Classes
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    @native()
  18. def parseCached(s: List[(String, List[String])]): Either[String, Option[A]]
  19. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
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  20. def toString(): String
    Definition Classes
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  21. final def wait(): Unit
    Definition Classes
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    @throws( ... )
  22. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
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    @throws( ... )
  23. final def wait(arg0: Long): Unit
    Definition Classes
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    @throws( ... ) @native()

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