loophp\collection\Operation\Nth::__invoke()

Complexity

Conditions	1
Paths	1

Size

Total Lines	25
Code Lines	9

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	12
CRAP Score	1

Importance

Changes

0

<?php
    public function __invoke(): Closure
    {
        return
            /**
             * @return Closure(int): Closure(iterable<TKey, T>): Generator<TKey, T>
             */
            static fn (int $step): Closure =>
                /**
                 * @return Closure(iterable<TKey, T>): Generator<TKey, T>
                 */
                static function (int $offset) use ($step): Closure {
                    /** @var Closure(iterable<TKey, T>): Generator<TKey, T> $pipe */
                    $pipe = (new Pipe())()(
                        (new Pack())(),
                        (new Filter())()(
                            /**
                             * @param array{0: TKey, 1: T} $value
                             */
                            static fn (array $value, int $key): bool => (($key % $step) === $offset)
                        ),
                        (new Unpack())()
                    );

                    // Point free style.
                    return $pipe;
                };