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<?php declare(strict_types=1); namespace Psl\Vec; use Psl\Iter; use Psl\Math; /** * Returns a list where each element is a pair that combines, pairwise, * the elements of the two given iterables. * * If the iterables are not of equal length, the result will have * the same number of elements as the shortest iterable. * * Elements of the longer iterable after the length of the shorter one * will be ignored. * * Examples: * * Vec\zip([1, 2, 3], [4, 5, 6]) * => Vec( * Arr(1, 4) * Arr(2, 5) * Arr(3, 6) * ) * * @template Tv * @template Tu * * @param iterable<Tv> $first * @param iterable<Tu> $second * * @return list<array{0: Tv, 1: Tu}> */ function zip(iterable $first, iterable $second): array { $one = namespace\values($first); $two = namespace\values($second); $result = []; $lesser_count = Math\minva(Iter\count($one), Iter\count($two)); for ($i = 0; $i < $lesser_count; ++$i) { $result[] = [$one[$i], $two[$i]]; } return $result; }
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