| public mapWithIndex ( callable $selector ) : Rx\Observable\AnonymousObservable | ||
| $selector | callable | |
| return | Rx\Observable\AnonymousObservable | |
public function mapWithIndex(callable $selector)
{
$index = 0;
return $this->map(function ($value) use($selector, &$index) {
return call_user_func_array($selector, [$index++, $value]);
});
}