Like Future.sequence but discards all Future.failure results

HappySequence.scala

def happySequence[A](source: Seq[Future[A]]) = {

  val optioned = source.map { f =>
    f.map(Option.apply).recover {
      case _ => None
    }
  }     
  
  Future.sequence(optioned).map(_.flatten)  
}

/* Example Usage */

val f1 = Future.successful(1)              
val f2 = Future.successful(2)        
val f3 = Future.failed(new Exception())    

val l1 = List(f1, f2, f3)         
  
val fl = happySequence(l1)      
fl.onComplete(ff => println(ff))

// Optional: 
Thread.sleep(10)