| public average ( ) : Rx\Observable\AnonymousObservable | ||
| return | Rx\Observable\AnonymousObservable | |
public function average()
{
return $this->defaultIfEmpty(Observable::error(new \UnderflowException()))->reduce(function ($a, $x) {
static $count = 0;
static $total = 0;
$count++;
$total += $x;
return $total / $count;
}, 0);
}