abstract class Flaggable[T] extends AnyRef

A type class providing evidence for parsing type T as a flag value.

Any class that is to be provided as a flaggable value must have an accompanying implicit Flaggable (contained within a companion object of the class in question) for converting a string to an object of that type. For instance, to make a hypothetical type called Foo flaggable:

class Foo {
  ...
}

object Foo {
  implicit val flagOfFoo = new Flaggable[Foo] {
    def parse(v: String): Foo = {
      ...
    }
  }
}

For simple implicit definitions based on existing String => T functions, use the Flaggable.mandatory function:

object Foo {
  def parse(v: String): Foo = {
     ...
  }

  implicit val ofFoo = Flaggable.mandatory(Foo.parse(_))
}

[1] https://en.wikipedia.org/wiki/Type_class

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Instance Constructors

  1. new Flaggable()

Abstract Value Members

  1. abstract def parse(s: String): T

    Parse a string (i.e.

    Parse a string (i.e. a value set on the command line) into an object of type T.

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. final def asInstanceOf[T0]: T0
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  5. def clone(): AnyRef
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    protected[java.lang]
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    @native() @throws( ... )
  6. def default: Option[T]

    An optional default value for the Flaggable.

  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[java.lang]
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    @throws( classOf[java.lang.Throwable] )
  10. final def getClass(): Class[_]
    Definition Classes
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    Annotations
    @native()
  11. def hashCode(): Int
    Definition Classes
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    @native()
  12. final def isInstanceOf[T0]: Boolean
    Definition Classes
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  13. final def ne(arg0: AnyRef): Boolean
    Definition Classes
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  14. final def notify(): Unit
    Definition Classes
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    @native()
  15. final def notifyAll(): Unit
    Definition Classes
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    @native()
  16. def show(t: T): String

    Create a string-representation of an object of type T.

    Create a string-representation of an object of type T. Used in Flag.toString.

  17. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
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  18. def toString(): String
    Definition Classes
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  19. final def wait(): Unit
    Definition Classes
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    @throws( ... )
  20. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
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    @throws( ... )
  21. final def wait(arg0: Long): Unit
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