| public reduce ( callable $accumulator, mixed $seed = null ) : Rx\Observable\AnonymousObservable | ||
| $accumulator | callable | - An accumulator function to be invoked on each element. |
| $seed | mixed | [optional] - The initial accumulator value. |
| return | Rx\Observable\AnonymousObservable | - An observable sequence containing a single element with the final accumulator value. |
public function reduce(callable $accumulator, $seed = null)
{
return $this->lift(function () use($accumulator, $seed) {
return new ReduceOperator($accumulator, $seed);
});
}