gistfile1.scala

import scalaz._
import Scalaz._

object validationFailFast {

  case object ParseError

  case class Person(firstName: String, lastName: String)

  val success1 = "first".success[ParseError.type].toValidationNel
  val success2 = "last".success[ParseError.type].toValidationNel

  val result = (success1 |@| success2) {  Person(_ , _) }
  println(result)
  // prints : Success(Person(first,last))
}