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<?php /** * SCSSPHP * * @copyright 2018-2020 Anthon Pang * * @license http://opensource.org/licenses/MIT MIT * * @link http://scssphp.github.io/scssphp */ namespace ScssPhp\ScssPhp\Util; /** * @internal */ final class IterableUtil { /** * @template T * * @param iterable<T> $list * @param callable(T): bool $callback * * @param-immediately-invoked-callable $callback */ public static function any(iterable $list, callable $callback): bool { foreach ($list as $item) { if ($callback($item)) { return true; } } return false; } /** * @template T * * @param iterable<T> $list * @param callable(T): bool $callback * * @param-immediately-invoked-callable $callback */ public static function every(iterable $list, callable $callback): bool { foreach ($list as $item) { if (!$callback($item)) { return false; } } return true; } /** * @template T * * @param iterable<T> $iterable * @return T|null */ public static function firstOrNull(iterable $iterable): mixed { foreach ($iterable as $item) { return $item; } return null; } /** * Returns the first `T` returned by $callback for an element of $iterable, * or `null` if it returns `null` for every element. * * @template T * @template E * @param iterable<E> $iterable * @param callable(E): (T|null) $callback * * @return T|null * * @param-immediately-invoked-callable $callback */ public static function search(iterable $iterable, callable $callback) { foreach ($iterable as $element) { $value = $callback($element); if ($value !== null) { return $value; } } return null; } }
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