Container for non empty values. Uses Equal and Monoid type classes from Scalaz.

NonEmpty.scala

import scalaz.{Equal, Monoid}
import scalaz.Scalaz._

final case class NonEmpty[A] private[NonEmpty](value: A)

object NonEmpty {
  def wrap[A: Monoid: Equal](value: A): Option[NonEmpty[A]] =
    if (implicitly[Monoid[A]].zero === value)
      None
    else
      Some(new NonEmpty(value))
}