1.22.2.4

ManifestValueConverter.scala
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			package net.shrine.utilities.scallop

			import scala.reflect.runtime.universe._
			import org.rogach.scallop.ValueConverter
			import org.rogach.scallop.ArgType

			/**
			* @author clint
			* @date Mar 26, 2013
			*/
			abstract class ManifestValueConverter[A : TypeTag] extends ValueConverter[A] {
			val parseFirst: Parser[A]

			override def parse(s: List[(String, List[String])]): Either[String, Option[A]] = {
			s.headOption.collect(parseFirst).getOrElse(Left(""))
			}

			override val tag: TypeTag[A] = typeTag[A]

			/** Type of parsed argument list. */
			override val argType: ArgType.V = ArgType.LIST
			}