gistfile1.txt

    super.validatePowerSource match {
      case Success(_) => this.successNel
      case f@Failure(_) => f
    }
    
    Attemt
    
  def singleValidation [A] (objectRef: A)(validation: ValidationNel[ValidationFailure, A]) = validation match {
    case Success(_)=> objectRef.successNel
    case f@Failure(_) => f
  }

def singleValidation[A](obj: A)(validationMethod: => ValidationNel[ValidationFailure, Any]): ValidationNel[ValidationFailure, A] = {
validationMethod match {
case Success() =>
obj.successNel
case f@Failure() =>
f
}
}

usage:

singleValidation(x) {
isPositive(x, "v", false)
}