Markus Klink justjoheinz

## 3nightclubs.scala
/**
 * Original source:
 * [[https://gist.github.com/oxbowlakes/970717]]
 *
 * Modifications:
 *  - use scala 7.0.5
 *  - use toValidationNel
 *  - use sequenceU and traverseU instead of the lambda trick
 *
 * Part Zero : 10:15 Saturday Night

## gist:7136932
package scalaio

import shapeless._, poly._

object list extends (Id ~> List) {
  def apply[T](t : T) = List(t)
}

object headOption extends (List ~> Option) {
  def apply[T](l : List[T]) = l.headOption
	/**
	* Original source:
	* [[https://gist.github.com/oxbowlakes/970717]]
	*
	* Modifications:
	* - use scala 7.0.5
	* - use toValidationNel
	* - use sequenceU and traverseU instead of the lambda trick
	*
	* Part Zero : 10:15 Saturday Night
	package scalaio

	import shapeless._, poly._

	object list extends (Id ~> List) {
	def apply[T](t : T) = List(t)
	}

	object headOption extends (List ~> Option) {
	def apply[T](l : List[T]) = l.headOption