/**
* @chainable
* @category Collections
* @param array $xs
* @param callable|string $f
* @return Iterator
*/
public static function sortBy($xs, $f)
{
return new Iterator\DeferIterator(function () use($xs, $f) {
return new \ArrayIterator(ArrayImpl::sortBy($xs, $f));
});
}
/**
* Alias: select
*
* @chainable
* @category Collections
* @param array $xs
* @param callable|string $f
* @return Generator
*/
public static function sortBy($xs, $f)
{
foreach (ArrayImpl::sortBy($xs, $f) as $k => $x) {
(yield $k => $x);
}
}
