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<?php |
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namespace IlluminateAgnostic\Collection\Support; |
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use ArrayIterator; |
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use Closure; |
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use IlluminateAgnostic\Collection\Support\Traits\EnumeratesValues; |
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use IlluminateAgnostic\Collection\Support\Traits\Macroable; |
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use IteratorAggregate; |
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use stdClass; |
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class LazyCollection implements Enumerable |
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{ |
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use EnumeratesValues, Macroable; |
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/** |
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* The source from which to generate items. |
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* |
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* @var callable|static |
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*/ |
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public $source; |
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/** |
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* Create a new lazy collection instance. |
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* |
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* @param mixed $source |
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* @return void |
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*/ |
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public function __construct($source = null) |
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{ |
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if ($source instanceof Closure || $source instanceof self) { |
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$this->source = $source; |
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} elseif (is_null($source)) { |
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$this->source = static::empty(); |
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} else { |
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$this->source = $this->getArrayableItems($source); |
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} |
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} |
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/** |
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* Create a new instance with no items. |
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* |
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* @return static |
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*/ |
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public static function empty() |
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{ |
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return new static([]); |
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} |
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/** |
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* Create a new instance by invoking the callback a given amount of times. |
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* |
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* @param int $number |
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* @param callable $callback |
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* @return static |
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*/ |
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public static function times($number, callable $callback = null) |
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{ |
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if ($number < 1) { |
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return new static; |
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} |
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$instance = new static(function () use ($number) { |
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for ($current = 1; $current <= $number; $current++) { |
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yield $current; |
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} |
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}); |
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return is_null($callback) ? $instance : $instance->map($callback); |
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} |
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/** |
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* Create an enumerable with the given range. |
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* |
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* @param int $from |
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* @param int $to |
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* @return static |
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*/ |
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public static function range($from, $to) |
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{ |
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return new static(function () use ($from, $to) { |
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for (; $from <= $to; $from++) { |
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yield $from; |
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} |
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}); |
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} |
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/** |
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* Get all items in the enumerable. |
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* |
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* @return array |
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*/ |
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public function all() |
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{ |
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if (is_array($this->source)) { |
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return $this->source; |
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} |
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return iterator_to_array($this->getIterator()); |
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} |
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/** |
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* Get the average value of a given key. |
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* |
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* @param callable|string|null $callback |
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* @return mixed |
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*/ |
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public function avg($callback = null) |
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{ |
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return $this->collect()->avg($callback); |
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} |
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/** |
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* Get the median of a given key. |
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* |
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* @param string|array|null $key |
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* @return mixed |
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*/ |
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public function median($key = null) |
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{ |
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return $this->collect()->median($key); |
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} |
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/** |
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* Get the mode of a given key. |
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* |
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* @param string|array|null $key |
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* @return array|null |
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*/ |
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public function mode($key = null) |
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{ |
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return $this->collect()->mode($key); |
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} |
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/** |
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* Collapse the collection of items into a single array. |
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* |
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* @return static |
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*/ |
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public function collapse() |
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{ |
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return new static(function () { |
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foreach ($this as $values) { |
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if (is_array($values) || $values instanceof Enumerable) { |
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foreach ($values as $value) { |
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yield $value; |
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} |
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} |
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} |
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}); |
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} |
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/** |
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* Determine if an item exists in the enumerable. |
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* |
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* @param mixed $key |
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* @param mixed $operator |
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* @param mixed $value |
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* @return bool |
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*/ |
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public function contains($key, $operator = null, $value = null) |
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{ |
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if (func_num_args() === 1 && $this->useAsCallable($key)) { |
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$placeholder = new stdClass; |
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return $this->first($key, $placeholder) !== $placeholder; |
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} |
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if (func_num_args() === 1) { |
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$needle = $key; |
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foreach ($this as $value) { |
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if ($value == $needle) { |
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return true; |
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} |
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} |
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return false; |
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} |
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return $this->contains($this->operatorForWhere(...func_get_args())); |
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} |
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/** |
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* Cross join the given iterables, returning all possible permutations. |
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* |
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* @param array ...$arrays |
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* @return static |
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*/ |
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public function crossJoin(...$arrays) |
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{ |
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return $this->passthru('crossJoin', func_get_args()); |
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} |
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/** |
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* Get the items that are not present in the given items. |
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* |
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* @param mixed $items |
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* @return static |
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*/ |
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public function diff($items) |
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{ |
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return $this->passthru('diff', func_get_args()); |
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} |
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/** |
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* Get the items that are not present in the given items, using the callback. |
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* |
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* @param mixed $items |
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* @param callable $callback |
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* @return static |
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*/ |
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public function diffUsing($items, callable $callback) |
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{ |
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return $this->passthru('diffUsing', func_get_args()); |
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} |
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/** |
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* Get the items whose keys and values are not present in the given items. |
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* |
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* @param mixed $items |
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* @return static |
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*/ |
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public function diffAssoc($items) |
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{ |
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return $this->passthru('diffAssoc', func_get_args()); |
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} |
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/** |
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* Get the items whose keys and values are not present in the given items. |
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* |
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* @param mixed $items |
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* @param callable $callback |
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* @return static |
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*/ |
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public function diffAssocUsing($items, callable $callback) |
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{ |
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return $this->passthru('diffAssocUsing', func_get_args()); |
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} |
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/** |
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* Get the items whose keys are not present in the given items. |
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* |
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* @param mixed $items |
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* @return static |
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*/ |
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public function diffKeys($items) |
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{ |
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return $this->passthru('diffKeys', func_get_args()); |
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} |
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/** |
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* Get the items whose keys are not present in the given items. |
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* |
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* @param mixed $items |
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* @param callable $callback |
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* @return static |
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*/ |
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public function diffKeysUsing($items, callable $callback) |
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{ |
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return $this->passthru('diffKeysUsing', func_get_args()); |
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} |
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/** |
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* Retrieve duplicate items. |
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* |
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* @param callable|null $callback |
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* @param bool $strict |
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* @return static |
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*/ |
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public function duplicates($callback = null, $strict = false) |
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{ |
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return $this->passthru('duplicates', func_get_args()); |
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} |
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/** |
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* Retrieve duplicate items using strict comparison. |
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* |
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* @param callable|null $callback |
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* @return static |
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*/ |
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public function duplicatesStrict($callback = null) |
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{ |
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return $this->passthru('duplicatesStrict', func_get_args()); |
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} |
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/** |
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* Get all items except for those with the specified keys. |
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* |
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* @param mixed $keys |
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* @return static |
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*/ |
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public function except($keys) |
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{ |
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return $this->passthru('except', func_get_args()); |
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} |
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/** |
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* Run a filter over each of the items. |
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* |
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* @param callable|null $callback |
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* @return static |
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*/ |
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public function filter(callable $callback = null) |
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{ |
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if (is_null($callback)) { |
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$callback = function ($value) { |
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return (bool) $value; |
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}; |
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} |
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return new static(function () use ($callback) { |
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22 |
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foreach ($this as $key => $value) { |
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if ($callback($value, $key)) { |
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yield $key => $value; |
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} |
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} |
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}); |
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} |
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/** |
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* Get the first item from the enumerable passing the given truth test. |
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* |
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* @param callable|null $callback |
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* @param mixed $default |
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* @return mixed |
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*/ |
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public function first(callable $callback = null, $default = null) |
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{ |
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$iterator = $this->getIterator(); |
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if (is_null($callback)) { |
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3 |
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if (! $iterator->valid()) { |
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return value($default); |
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} |
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2 |
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return $iterator->current(); |
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} |
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7 |
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foreach ($iterator as $key => $value) { |
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7 |
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if ($callback($value, $key)) { |
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return $value; |
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} |
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} |
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346
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return value($default); |
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} |
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349
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/** |
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* Get a flattened list of the items in the collection. |
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* |
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* @param int $depth |
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* @return static |
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*/ |
355
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3 |
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public function flatten($depth = INF) |
356
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{ |
357
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$instance = new static(function () use ($depth) { |
358
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3 |
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foreach ($this as $item) { |
359
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3 |
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if (! is_array($item) && ! $item instanceof Enumerable) { |
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3 |
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yield $item; |
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3 |
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} elseif ($depth === 1) { |
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2 |
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yield from $item; |
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} else { |
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3 |
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yield from (new static($item))->flatten($depth - 1); |
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} |
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} |
367
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3 |
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}); |
368
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3 |
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return $instance->values(); |
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} |
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/** |
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* Flip the items in the collection. |
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* |
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* @return static |
376
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*/ |
377
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1 |
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public function flip() |
378
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{ |
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return new static(function () { |
380
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1 |
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foreach ($this as $key => $value) { |
381
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1 |
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yield $value => $key; |
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} |
383
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1 |
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}); |
384
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} |
385
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386
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/** |
387
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* Get an item by key. |
388
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* |
389
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* @param mixed $key |
390
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* @param mixed $default |
391
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* @return mixed |
392
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*/ |
393
|
7 |
|
public function get($key, $default = null) |
394
|
|
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{ |
395
|
7 |
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if (is_null($key)) { |
396
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1 |
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return; |
397
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|
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} |
398
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|
399
|
6 |
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foreach ($this as $outerKey => $outerValue) { |
400
|
6 |
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if ($outerKey == $key) { |
401
|
6 |
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return $outerValue; |
402
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} |
403
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} |
404
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|
405
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return value($default); |
406
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} |
407
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|
408
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/** |
409
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|
|
* Group an associative array by a field or using a callback. |
410
|
|
|
* |
411
|
|
|
* @param array|callable|string $groupBy |
412
|
|
|
* @param bool $preserveKeys |
413
|
|
|
* @return static |
414
|
|
|
*/ |
415
|
10 |
|
public function groupBy($groupBy, $preserveKeys = false) |
416
|
|
|
{ |
417
|
10 |
|
return $this->passthru('groupBy', func_get_args()); |
418
|
|
|
} |
419
|
|
|
|
420
|
|
|
/** |
421
|
|
|
* Key an associative array by a field or using a callback. |
422
|
|
|
* |
423
|
|
|
* @param callable|string $keyBy |
424
|
|
|
* @return static |
425
|
|
|
*/ |
426
|
4 |
|
public function keyBy($keyBy) |
427
|
|
|
{ |
428
|
|
|
return new static(function () use ($keyBy) { |
429
|
4 |
|
$keyBy = $this->valueRetriever($keyBy); |
|
|
|
|
430
|
|
|
|
431
|
4 |
|
foreach ($this as $key => $item) { |
432
|
4 |
|
$resolvedKey = $keyBy($item, $key); |
433
|
|
|
|
434
|
4 |
|
if (is_object($resolvedKey)) { |
435
|
1 |
|
$resolvedKey = (string) $resolvedKey; |
436
|
|
|
} |
437
|
|
|
|
438
|
4 |
|
yield $resolvedKey => $item; |
439
|
|
|
} |
440
|
4 |
|
}); |
441
|
|
|
} |
442
|
|
|
|
443
|
|
|
/** |
444
|
|
|
* Determine if an item exists in the collection by key. |
445
|
|
|
* |
446
|
|
|
* @param mixed $key |
447
|
|
|
* @return bool |
448
|
|
|
*/ |
449
|
2 |
|
public function has($key) |
450
|
|
|
{ |
451
|
2 |
|
$keys = array_flip(is_array($key) ? $key : func_get_args()); |
452
|
2 |
|
$count = count($keys); |
453
|
|
|
|
454
|
2 |
|
foreach ($this as $key => $value) { |
455
|
2 |
|
if (array_key_exists($key, $keys) && --$count == 0) { |
456
|
2 |
|
return true; |
457
|
|
|
} |
458
|
|
|
} |
459
|
|
|
|
460
|
2 |
|
return false; |
461
|
|
|
} |
462
|
|
|
|
463
|
|
|
/** |
464
|
|
|
* Concatenate values of a given key as a string. |
465
|
|
|
* |
466
|
|
|
* @param string $value |
467
|
|
|
* @param string $glue |
468
|
|
|
* @return string |
469
|
|
|
*/ |
470
|
1 |
|
public function implode($value, $glue = null) |
471
|
|
|
{ |
472
|
1 |
|
return $this->collect()->implode(...func_get_args()); |
473
|
|
|
} |
474
|
|
|
|
475
|
|
|
/** |
476
|
|
|
* Intersect the collection with the given items. |
477
|
|
|
* |
478
|
|
|
* @param mixed $items |
479
|
|
|
* @return static |
480
|
|
|
*/ |
481
|
2 |
|
public function intersect($items) |
482
|
|
|
{ |
483
|
2 |
|
return $this->passthru('intersect', func_get_args()); |
484
|
|
|
} |
485
|
|
|
|
486
|
|
|
/** |
487
|
|
|
* Intersect the collection with the given items by key. |
488
|
|
|
* |
489
|
|
|
* @param mixed $items |
490
|
|
|
* @return static |
491
|
|
|
*/ |
492
|
2 |
|
public function intersectByKeys($items) |
493
|
|
|
{ |
494
|
2 |
|
return $this->passthru('intersectByKeys', func_get_args()); |
495
|
|
|
} |
496
|
|
|
|
497
|
|
|
/** |
498
|
|
|
* Determine if the items is empty or not. |
499
|
|
|
* |
500
|
|
|
* @return bool |
501
|
|
|
*/ |
502
|
12 |
|
public function isEmpty() |
503
|
|
|
{ |
504
|
12 |
|
return ! $this->getIterator()->valid(); |
|
|
|
|
505
|
|
|
} |
506
|
|
|
|
507
|
|
|
/** |
508
|
|
|
* Join all items from the collection using a string. The final items can use a separate glue string. |
509
|
|
|
* |
510
|
|
|
* @param string $glue |
511
|
|
|
* @param string $finalGlue |
512
|
|
|
* @return string |
513
|
|
|
*/ |
514
|
1 |
|
public function join($glue, $finalGlue = '') |
515
|
|
|
{ |
516
|
1 |
|
return $this->collect()->join(...func_get_args()); |
517
|
|
|
} |
518
|
|
|
|
519
|
|
|
/** |
520
|
|
|
* Get the keys of the collection items. |
521
|
|
|
* |
522
|
|
|
* @return static |
523
|
|
|
*/ |
524
|
3 |
|
public function keys() |
525
|
|
|
{ |
526
|
|
|
return new static(function () { |
527
|
3 |
|
foreach ($this as $key => $value) { |
528
|
3 |
|
yield $key; |
529
|
|
|
} |
530
|
3 |
|
}); |
531
|
|
|
} |
532
|
|
|
|
533
|
|
|
/** |
534
|
|
|
* Get the last item from the collection. |
535
|
|
|
* |
536
|
|
|
* @param callable|null $callback |
537
|
|
|
* @param mixed $default |
538
|
|
|
* @return mixed |
539
|
|
|
*/ |
540
|
4 |
|
public function last(callable $callback = null, $default = null) |
541
|
|
|
{ |
542
|
4 |
|
$needle = $placeholder = new stdClass; |
543
|
|
|
|
544
|
4 |
|
foreach ($this as $key => $value) { |
545
|
3 |
|
if (is_null($callback) || $callback($value, $key)) { |
546
|
2 |
|
$needle = $value; |
547
|
|
|
} |
548
|
|
|
} |
549
|
|
|
|
550
|
4 |
|
return $needle === $placeholder ? value($default) : $needle; |
551
|
|
|
} |
552
|
|
|
|
553
|
|
|
/** |
554
|
|
|
* Get the values of a given key. |
555
|
|
|
* |
556
|
|
|
* @param string|array $value |
557
|
|
|
* @param string|null $key |
558
|
|
|
* @return static |
559
|
|
|
*/ |
560
|
4 |
|
public function pluck($value, $key = null) |
561
|
|
|
{ |
562
|
|
|
return new static(function () use ($value, $key) { |
563
|
4 |
|
[$value, $key] = $this->explodePluckParameters($value, $key); |
564
|
|
|
|
565
|
4 |
|
foreach ($this as $item) { |
566
|
4 |
|
$itemValue = data_get($item, $value); |
567
|
|
|
|
568
|
4 |
|
if (is_null($key)) { |
569
|
4 |
|
yield $itemValue; |
570
|
|
|
} else { |
571
|
2 |
|
$itemKey = data_get($item, $key); |
572
|
|
|
|
573
|
2 |
|
if (is_object($itemKey) && method_exists($itemKey, '__toString')) { |
574
|
|
|
$itemKey = (string) $itemKey; |
575
|
|
|
} |
576
|
|
|
|
577
|
2 |
|
yield $itemKey => $itemValue; |
578
|
|
|
} |
579
|
|
|
} |
580
|
4 |
|
}); |
581
|
|
|
} |
582
|
|
|
|
583
|
|
|
/** |
584
|
|
|
* Run a map over each of the items. |
585
|
|
|
* |
586
|
|
|
* @param callable $callback |
587
|
|
|
* @return static |
588
|
|
|
*/ |
589
|
68 |
|
public function map(callable $callback) |
590
|
|
|
{ |
591
|
|
|
return new static(function () use ($callback) { |
592
|
68 |
|
foreach ($this as $key => $value) { |
593
|
65 |
|
yield $key => $callback($value, $key); |
594
|
|
|
} |
595
|
68 |
|
}); |
596
|
|
|
} |
597
|
|
|
|
598
|
|
|
/** |
599
|
|
|
* Run a dictionary map over the items. |
600
|
|
|
* |
601
|
|
|
* The callback should return an associative array with a single key/value pair. |
602
|
|
|
* |
603
|
|
|
* @param callable $callback |
604
|
|
|
* @return static |
605
|
|
|
*/ |
606
|
4 |
|
public function mapToDictionary(callable $callback) |
607
|
|
|
{ |
608
|
4 |
|
return $this->passthru('mapToDictionary', func_get_args()); |
609
|
|
|
} |
610
|
|
|
|
611
|
|
|
/** |
612
|
|
|
* Run an associative map over each of the items. |
613
|
|
|
* |
614
|
|
|
* The callback should return an associative array with a single key/value pair. |
615
|
|
|
* |
616
|
|
|
* @param callable $callback |
617
|
|
|
* @return static |
618
|
|
|
*/ |
619
|
5 |
|
public function mapWithKeys(callable $callback) |
620
|
|
|
{ |
621
|
|
|
return new static(function () use ($callback) { |
622
|
5 |
|
foreach ($this as $key => $value) { |
623
|
5 |
|
yield from $callback($value, $key); |
624
|
|
|
} |
625
|
5 |
|
}); |
626
|
|
|
} |
627
|
|
|
|
628
|
|
|
/** |
629
|
|
|
* Merge the collection with the given items. |
630
|
|
|
* |
631
|
|
|
* @param mixed $items |
632
|
|
|
* @return static |
633
|
|
|
*/ |
634
|
3 |
|
public function merge($items) |
635
|
|
|
{ |
636
|
3 |
|
return $this->passthru('merge', func_get_args()); |
637
|
|
|
} |
638
|
|
|
|
639
|
|
|
/** |
640
|
|
|
* Recursively merge the collection with the given items. |
641
|
|
|
* |
642
|
|
|
* @param mixed $items |
643
|
|
|
* @return static |
644
|
|
|
*/ |
645
|
3 |
|
public function mergeRecursive($items) |
646
|
|
|
{ |
647
|
3 |
|
return $this->passthru('mergeRecursive', func_get_args()); |
648
|
|
|
} |
649
|
|
|
|
650
|
|
|
/** |
651
|
|
|
* Create a collection by using this collection for keys and another for its values. |
652
|
|
|
* |
653
|
|
|
* @param mixed $values |
654
|
|
|
* @return static |
655
|
|
|
*/ |
656
|
2 |
|
public function combine($values) |
657
|
|
|
{ |
658
|
|
|
return new static(function () use ($values) { |
659
|
2 |
|
$values = $this->makeIterator($values); |
|
|
|
|
660
|
|
|
|
661
|
2 |
|
$errorMessage = 'Both parameters should have an equal number of elements'; |
662
|
|
|
|
663
|
2 |
|
foreach ($this as $key) { |
664
|
2 |
|
if (! $values->valid()) { |
665
|
|
|
trigger_error($errorMessage, E_USER_WARNING); |
666
|
|
|
|
667
|
|
|
break; |
668
|
|
|
} |
669
|
|
|
|
670
|
2 |
|
yield $key => $values->current(); |
671
|
|
|
|
672
|
2 |
|
$values->next(); |
673
|
|
|
} |
674
|
|
|
|
675
|
2 |
|
if ($values->valid()) { |
676
|
|
|
trigger_error($errorMessage, E_USER_WARNING); |
677
|
|
|
} |
678
|
2 |
|
}); |
679
|
|
|
} |
680
|
|
|
|
681
|
|
|
/** |
682
|
|
|
* Union the collection with the given items. |
683
|
|
|
* |
684
|
|
|
* @param mixed $items |
685
|
|
|
* @return static |
686
|
|
|
*/ |
687
|
3 |
|
public function union($items) |
688
|
|
|
{ |
689
|
3 |
|
return $this->passthru('union', func_get_args()); |
690
|
|
|
} |
691
|
|
|
|
692
|
|
|
/** |
693
|
|
|
* Create a new collection consisting of every n-th element. |
694
|
|
|
* |
695
|
|
|
* @param int $step |
696
|
|
|
* @param int $offset |
697
|
|
|
* @return static |
698
|
|
|
*/ |
699
|
1 |
|
public function nth($step, $offset = 0) |
700
|
|
|
{ |
701
|
|
|
return new static(function () use ($step, $offset) { |
702
|
1 |
|
$position = 0; |
703
|
|
|
|
704
|
1 |
|
foreach ($this as $item) { |
705
|
1 |
|
if ($position % $step === $offset) { |
706
|
1 |
|
yield $item; |
707
|
|
|
} |
708
|
|
|
|
709
|
1 |
|
$position++; |
710
|
|
|
} |
711
|
1 |
|
}); |
712
|
|
|
} |
713
|
|
|
|
714
|
|
|
/** |
715
|
|
|
* Get the items with the specified keys. |
716
|
|
|
* |
717
|
|
|
* @param mixed $keys |
718
|
|
|
* @return static |
719
|
|
|
*/ |
720
|
1 |
|
public function only($keys) |
721
|
|
|
{ |
722
|
1 |
|
if ($keys instanceof Enumerable) { |
723
|
1 |
|
$keys = $keys->all(); |
724
|
1 |
|
} elseif (! is_null($keys)) { |
725
|
1 |
|
$keys = is_array($keys) ? $keys : func_get_args(); |
726
|
|
|
} |
727
|
|
|
|
728
|
|
|
return new static(function () use ($keys) { |
729
|
1 |
|
if (is_null($keys)) { |
730
|
1 |
|
yield from $this; |
731
|
|
|
} else { |
732
|
1 |
|
$keys = array_flip($keys); |
|
|
|
|
733
|
|
|
|
734
|
1 |
|
foreach ($this as $key => $value) { |
735
|
1 |
|
if (array_key_exists($key, $keys)) { |
736
|
1 |
|
yield $key => $value; |
737
|
|
|
|
738
|
1 |
|
unset($keys[$key]); |
739
|
|
|
|
740
|
1 |
|
if (empty($keys)) { |
741
|
1 |
|
break; |
742
|
|
|
} |
743
|
|
|
} |
744
|
|
|
} |
745
|
|
|
} |
746
|
1 |
|
}); |
747
|
|
|
} |
748
|
|
|
|
749
|
|
|
/** |
750
|
|
|
* Push all of the given items onto the collection. |
751
|
|
|
* |
752
|
|
|
* @param iterable $source |
753
|
|
|
* @return static |
754
|
|
|
*/ |
755
|
15 |
|
public function concat($source) |
756
|
|
|
{ |
757
|
|
|
return (new static(function () use ($source) { |
758
|
15 |
|
yield from $this; |
759
|
15 |
|
yield from $source; |
760
|
15 |
|
}))->values(); |
761
|
|
|
} |
762
|
|
|
|
763
|
|
|
/** |
764
|
|
|
* Get one or a specified number of items randomly from the collection. |
765
|
|
|
* |
766
|
|
|
* @param int|null $number |
767
|
|
|
* @return static|mixed |
768
|
|
|
* |
769
|
|
|
* @throws \InvalidArgumentException |
770
|
|
|
*/ |
771
|
3 |
|
public function random($number = null) |
772
|
|
|
{ |
773
|
3 |
|
$result = $this->collect()->random(...func_get_args()); |
774
|
|
|
|
775
|
2 |
|
return is_null($number) ? $result : new static($result); |
776
|
|
|
} |
777
|
|
|
|
778
|
|
|
/** |
779
|
|
|
* Reduce the collection to a single value. |
780
|
|
|
* |
781
|
|
|
* @param callable $callback |
782
|
|
|
* @param mixed $initial |
783
|
|
|
* @return mixed |
784
|
|
|
*/ |
785
|
7 |
|
public function reduce(callable $callback, $initial = null) |
786
|
|
|
{ |
787
|
7 |
|
$result = $initial; |
788
|
|
|
|
789
|
7 |
|
foreach ($this as $value) { |
790
|
6 |
|
$result = $callback($result, $value); |
791
|
|
|
} |
792
|
|
|
|
793
|
7 |
|
return $result; |
794
|
|
|
} |
795
|
|
|
|
796
|
|
|
/** |
797
|
|
|
* Replace the collection items with the given items. |
798
|
|
|
* |
799
|
|
|
* @param mixed $items |
800
|
|
|
* @return static |
801
|
|
|
*/ |
802
|
3 |
|
public function replace($items) |
803
|
|
|
{ |
804
|
|
|
return new static(function () use ($items) { |
805
|
3 |
|
$items = $this->getArrayableItems($items); |
|
|
|
|
806
|
|
|
|
807
|
3 |
|
foreach ($this as $key => $value) { |
808
|
3 |
|
if (array_key_exists($key, $items)) { |
809
|
2 |
|
yield $key => $items[$key]; |
810
|
|
|
|
811
|
2 |
|
unset($items[$key]); |
812
|
|
|
} else { |
813
|
3 |
|
yield $key => $value; |
814
|
|
|
} |
815
|
|
|
} |
816
|
|
|
|
817
|
3 |
|
foreach ($items as $key => $value) { |
818
|
|
|
yield $key => $value; |
819
|
|
|
} |
820
|
3 |
|
}); |
821
|
|
|
} |
822
|
|
|
|
823
|
|
|
/** |
824
|
|
|
* Recursively replace the collection items with the given items. |
825
|
|
|
* |
826
|
|
|
* @param mixed $items |
827
|
|
|
* @return static |
828
|
|
|
*/ |
829
|
3 |
|
public function replaceRecursive($items) |
830
|
|
|
{ |
831
|
3 |
|
return $this->passthru('replaceRecursive', func_get_args()); |
832
|
|
|
} |
833
|
|
|
|
834
|
|
|
/** |
835
|
|
|
* Reverse items order. |
836
|
|
|
* |
837
|
|
|
* @return static |
838
|
|
|
*/ |
839
|
1 |
|
public function reverse() |
840
|
|
|
{ |
841
|
1 |
|
return $this->passthru('reverse', func_get_args()); |
842
|
|
|
} |
843
|
|
|
|
844
|
|
|
/** |
845
|
|
|
* Search the collection for a given value and return the corresponding key if successful. |
846
|
|
|
* |
847
|
|
|
* @param mixed $value |
848
|
|
|
* @param bool $strict |
849
|
|
|
* @return mixed |
850
|
|
|
*/ |
851
|
3 |
|
public function search($value, $strict = false) |
852
|
|
|
{ |
853
|
3 |
|
$predicate = $this->useAsCallable($value) |
854
|
2 |
|
? $value |
855
|
|
|
: function ($item) use ($value, $strict) { |
856
|
3 |
|
return $strict ? $item === $value : $item == $value; |
857
|
3 |
|
}; |
858
|
|
|
|
859
|
3 |
|
foreach ($this as $key => $item) { |
860
|
3 |
|
if ($predicate($item, $key)) { |
861
|
2 |
|
return $key; |
862
|
|
|
} |
863
|
|
|
} |
864
|
|
|
|
865
|
2 |
|
return false; |
866
|
|
|
} |
867
|
|
|
|
868
|
|
|
/** |
869
|
|
|
* Shuffle the items in the collection. |
870
|
|
|
* |
871
|
|
|
* @param int $seed |
872
|
|
|
* @return static |
873
|
|
|
*/ |
874
|
1 |
|
public function shuffle($seed = null) |
875
|
|
|
{ |
876
|
1 |
|
return $this->passthru('shuffle', func_get_args()); |
877
|
|
|
} |
878
|
|
|
|
879
|
|
|
/** |
880
|
|
|
* Skip the first {$count} items. |
881
|
|
|
* |
882
|
|
|
* @param int $count |
883
|
|
|
* @return static |
884
|
|
|
*/ |
885
|
5 |
|
public function skip($count) |
886
|
|
|
{ |
887
|
|
|
return new static(function () use ($count) { |
888
|
5 |
|
$iterator = $this->getIterator(); |
889
|
|
|
|
890
|
5 |
|
while ($iterator->valid() && $count--) { |
891
|
4 |
|
$iterator->next(); |
892
|
|
|
} |
893
|
|
|
|
894
|
5 |
|
while ($iterator->valid()) { |
895
|
5 |
|
yield $iterator->key() => $iterator->current(); |
896
|
|
|
|
897
|
4 |
|
$iterator->next(); |
898
|
|
|
} |
899
|
5 |
|
}); |
900
|
|
|
} |
901
|
|
|
|
902
|
|
|
/** |
903
|
|
|
* Get a slice of items from the enumerable. |
904
|
|
|
* |
905
|
|
|
* @param int $offset |
906
|
|
|
* @param int $length |
907
|
|
|
* @return static |
908
|
|
|
*/ |
909
|
8 |
|
public function slice($offset, $length = null) |
910
|
|
|
{ |
911
|
8 |
|
if ($offset < 0 || $length < 0) { |
912
|
4 |
|
return $this->passthru('slice', func_get_args()); |
913
|
|
|
} |
914
|
|
|
|
915
|
4 |
|
$instance = $this->skip($offset); |
916
|
|
|
|
917
|
4 |
|
return is_null($length) ? $instance : $instance->take($length); |
918
|
|
|
} |
919
|
|
|
|
920
|
|
|
/** |
921
|
|
|
* Split a collection into a certain number of groups. |
922
|
|
|
* |
923
|
|
|
* @param int $numberOfGroups |
924
|
|
|
* @return static |
925
|
|
|
*/ |
926
|
7 |
|
public function split($numberOfGroups) |
927
|
|
|
{ |
928
|
7 |
|
return $this->passthru('split', func_get_args()); |
929
|
|
|
} |
930
|
|
|
|
931
|
|
|
/** |
932
|
|
|
* Chunk the collection into chunks of the given size. |
933
|
|
|
* |
934
|
|
|
* @param int $size |
935
|
|
|
* @return static |
936
|
|
|
*/ |
937
|
3 |
|
public function chunk($size) |
938
|
|
|
{ |
939
|
3 |
|
if ($size <= 0) { |
940
|
2 |
|
return static::empty(); |
941
|
|
|
} |
942
|
|
|
|
943
|
|
|
return new static(function () use ($size) { |
944
|
1 |
|
$iterator = $this->getIterator(); |
945
|
|
|
|
946
|
1 |
|
while ($iterator->valid()) { |
947
|
1 |
|
$chunk = []; |
948
|
|
|
|
949
|
1 |
|
while (true) { |
950
|
1 |
|
$chunk[$iterator->key()] = $iterator->current(); |
951
|
|
|
|
952
|
1 |
|
if (count($chunk) < $size) { |
953
|
1 |
|
$iterator->next(); |
954
|
|
|
|
955
|
1 |
|
if (! $iterator->valid()) { |
956
|
1 |
|
break; |
957
|
|
|
} |
958
|
|
|
} else { |
959
|
1 |
|
break; |
960
|
|
|
} |
961
|
|
|
} |
962
|
|
|
|
963
|
1 |
|
yield new static($chunk); |
964
|
|
|
|
965
|
1 |
|
$iterator->next(); |
966
|
|
|
} |
967
|
1 |
|
}); |
968
|
|
|
} |
969
|
|
|
|
970
|
|
|
/** |
971
|
|
|
* Sort through each item with a callback. |
972
|
|
|
* |
973
|
|
|
* @param callable|null $callback |
974
|
|
|
* @return static |
975
|
|
|
*/ |
976
|
2 |
|
public function sort(callable $callback = null) |
977
|
|
|
{ |
978
|
2 |
|
return $this->passthru('sort', func_get_args()); |
979
|
|
|
} |
980
|
|
|
|
981
|
|
|
/** |
982
|
|
|
* Sort the collection using the given callback. |
983
|
|
|
* |
984
|
|
|
* @param callable|string $callback |
985
|
|
|
* @param int $options |
986
|
|
|
* @param bool $descending |
987
|
|
|
* @return static |
988
|
|
|
*/ |
989
|
4 |
|
public function sortBy($callback, $options = SORT_REGULAR, $descending = false) |
990
|
|
|
{ |
991
|
4 |
|
return $this->passthru('sortBy', func_get_args()); |
992
|
|
|
} |
993
|
|
|
|
994
|
|
|
/** |
995
|
|
|
* Sort the collection in descending order using the given callback. |
996
|
|
|
* |
997
|
|
|
* @param callable|string $callback |
998
|
|
|
* @param int $options |
999
|
|
|
* @return static |
1000
|
|
|
*/ |
1001
|
1 |
|
public function sortByDesc($callback, $options = SORT_REGULAR) |
1002
|
|
|
{ |
1003
|
1 |
|
return $this->passthru('sortByDesc', func_get_args()); |
1004
|
|
|
} |
1005
|
|
|
|
1006
|
|
|
/** |
1007
|
|
|
* Sort the collection keys. |
1008
|
|
|
* |
1009
|
|
|
* @param int $options |
1010
|
|
|
* @param bool $descending |
1011
|
|
|
* @return static |
1012
|
|
|
*/ |
1013
|
1 |
|
public function sortKeys($options = SORT_REGULAR, $descending = false) |
1014
|
|
|
{ |
1015
|
1 |
|
return $this->passthru('sortKeys', func_get_args()); |
1016
|
|
|
} |
1017
|
|
|
|
1018
|
|
|
/** |
1019
|
|
|
* Sort the collection keys in descending order. |
1020
|
|
|
* |
1021
|
|
|
* @param int $options |
1022
|
|
|
* @return static |
1023
|
|
|
*/ |
1024
|
1 |
|
public function sortKeysDesc($options = SORT_REGULAR) |
1025
|
|
|
{ |
1026
|
1 |
|
return $this->passthru('sortKeysDesc', func_get_args()); |
1027
|
|
|
} |
1028
|
|
|
|
1029
|
|
|
/** |
1030
|
|
|
* Take the first or last {$limit} items. |
1031
|
|
|
* |
1032
|
|
|
* @param int $limit |
1033
|
|
|
* @return static |
1034
|
|
|
*/ |
1035
|
5 |
|
public function take($limit) |
1036
|
|
|
{ |
1037
|
5 |
|
if ($limit < 0) { |
1038
|
1 |
|
return $this->passthru('take', func_get_args()); |
1039
|
|
|
} |
1040
|
|
|
|
1041
|
|
|
return new static(function () use ($limit) { |
1042
|
4 |
|
$iterator = $this->getIterator(); |
1043
|
|
|
|
1044
|
4 |
|
while ($limit--) { |
1045
|
4 |
|
if (! $iterator->valid()) { |
1046
|
1 |
|
break; |
1047
|
|
|
} |
1048
|
|
|
|
1049
|
4 |
|
yield $iterator->key() => $iterator->current(); |
1050
|
|
|
|
1051
|
4 |
|
if ($limit) { |
1052
|
3 |
|
$iterator->next(); |
1053
|
|
|
} |
1054
|
|
|
} |
1055
|
4 |
|
}); |
1056
|
|
|
} |
1057
|
|
|
|
1058
|
|
|
/** |
1059
|
|
|
* Pass each item in the collection to the given callback, lazily. |
1060
|
|
|
* |
1061
|
|
|
* @param callable $callback |
1062
|
|
|
* @return static |
1063
|
|
|
*/ |
1064
|
|
|
public function tapEach(callable $callback) |
1065
|
|
|
{ |
1066
|
|
|
return new static(function () use ($callback) { |
1067
|
|
|
foreach ($this as $key => $value) { |
1068
|
|
|
$callback($value, $key); |
1069
|
|
|
|
1070
|
|
|
yield $key => $value; |
1071
|
|
|
} |
1072
|
|
|
}); |
1073
|
|
|
} |
1074
|
|
|
|
1075
|
|
|
/** |
1076
|
|
|
* Reset the keys on the underlying array. |
1077
|
|
|
* |
1078
|
|
|
* @return static |
1079
|
|
|
*/ |
1080
|
46 |
|
public function values() |
1081
|
|
|
{ |
1082
|
|
|
return new static(function () { |
1083
|
46 |
|
foreach ($this as $item) { |
1084
|
46 |
|
yield $item; |
1085
|
|
|
} |
1086
|
46 |
|
}); |
1087
|
|
|
} |
1088
|
|
|
|
1089
|
|
|
/** |
1090
|
|
|
* Zip the collection together with one or more arrays. |
1091
|
|
|
* |
1092
|
|
|
* e.g. new LazyCollection([1, 2, 3])->zip([4, 5, 6]); |
1093
|
|
|
* => [[1, 4], [2, 5], [3, 6]] |
1094
|
|
|
* |
1095
|
|
|
* @param mixed ...$items |
1096
|
|
|
* @return static |
1097
|
|
|
*/ |
1098
|
1 |
|
public function zip($items) |
1099
|
|
|
{ |
1100
|
1 |
|
$iterables = func_get_args(); |
1101
|
|
|
|
1102
|
|
|
return new static(function () use ($iterables) { |
1103
|
|
|
$iterators = Collection::make($iterables)->map(function ($iterable) { |
1104
|
1 |
|
return $this->makeIterator($iterable); |
1105
|
1 |
|
})->prepend($this->getIterator()); |
1106
|
|
|
|
1107
|
1 |
|
while ($iterators->contains->valid()) { |
1108
|
1 |
|
yield new static($iterators->map->current()); |
1109
|
|
|
|
1110
|
1 |
|
$iterators->each->next(); |
1111
|
|
|
} |
1112
|
1 |
|
}); |
1113
|
|
|
} |
1114
|
|
|
|
1115
|
|
|
/** |
1116
|
|
|
* Pad collection to the specified length with a value. |
1117
|
|
|
* |
1118
|
|
|
* @param int $size |
1119
|
|
|
* @param mixed $value |
1120
|
|
|
* @return static |
1121
|
|
|
*/ |
1122
|
1 |
|
public function pad($size, $value) |
1123
|
|
|
{ |
1124
|
1 |
|
if ($size < 0) { |
1125
|
1 |
|
return $this->passthru('pad', func_get_args()); |
1126
|
|
|
} |
1127
|
|
|
|
1128
|
|
|
return new static(function () use ($size, $value) { |
1129
|
1 |
|
$yielded = 0; |
1130
|
|
|
|
1131
|
1 |
|
foreach ($this as $index => $item) { |
1132
|
1 |
|
yield $index => $item; |
1133
|
|
|
|
1134
|
1 |
|
$yielded++; |
1135
|
|
|
} |
1136
|
|
|
|
1137
|
1 |
|
while ($yielded++ < $size) { |
1138
|
1 |
|
yield $value; |
1139
|
|
|
} |
1140
|
1 |
|
}); |
1141
|
|
|
} |
1142
|
|
|
|
1143
|
|
|
/** |
1144
|
|
|
* Get the values iterator. |
1145
|
|
|
* |
1146
|
|
|
* @return \Traversable |
1147
|
|
|
*/ |
1148
|
195 |
|
public function getIterator() |
1149
|
|
|
{ |
1150
|
195 |
|
return $this->makeIterator($this->source); |
1151
|
|
|
} |
1152
|
|
|
|
1153
|
|
|
/** |
1154
|
|
|
* Count the number of items in the collection. |
1155
|
|
|
* |
1156
|
|
|
* @return int |
1157
|
|
|
*/ |
1158
|
9 |
|
public function count() |
1159
|
|
|
{ |
1160
|
9 |
|
if (is_array($this->source)) { |
1161
|
4 |
|
return count($this->source); |
1162
|
|
|
} |
1163
|
|
|
|
1164
|
5 |
|
return iterator_count($this->getIterator()); |
1165
|
|
|
} |
1166
|
|
|
|
1167
|
|
|
/** |
1168
|
|
|
* Make an iterator from the given source. |
1169
|
|
|
* |
1170
|
|
|
* @param mixed $source |
1171
|
|
|
* @return \Traversable |
1172
|
|
|
*/ |
1173
|
195 |
|
protected function makeIterator($source) |
1174
|
|
|
{ |
1175
|
195 |
|
if ($source instanceof IteratorAggregate) { |
1176
|
28 |
|
return $source->getIterator(); |
1177
|
|
|
} |
1178
|
|
|
|
1179
|
195 |
|
if (is_array($source)) { |
1180
|
133 |
|
return new ArrayIterator($source); |
1181
|
|
|
} |
1182
|
|
|
|
1183
|
156 |
|
return $source(); |
1184
|
|
|
} |
1185
|
|
|
|
1186
|
|
|
/** |
1187
|
|
|
* Explode the "value" and "key" arguments passed to "pluck". |
1188
|
|
|
* |
1189
|
|
|
* @param string|array $value |
1190
|
|
|
* @param string|array|null $key |
1191
|
|
|
* @return array |
1192
|
|
|
*/ |
1193
|
4 |
|
protected function explodePluckParameters($value, $key) |
1194
|
|
|
{ |
1195
|
4 |
|
$value = is_string($value) ? explode('.', $value) : $value; |
1196
|
|
|
|
1197
|
4 |
|
$key = is_null($key) || is_array($key) ? $key : explode('.', $key); |
1198
|
|
|
|
1199
|
4 |
|
return [$value, $key]; |
1200
|
|
|
} |
1201
|
|
|
|
1202
|
|
|
/** |
1203
|
|
|
* Pass this lazy collection through a method on the collection class. |
1204
|
|
|
* |
1205
|
|
|
* @param string $method |
1206
|
|
|
* @param array $params |
1207
|
|
|
* @return static |
1208
|
|
|
*/ |
1209
|
68 |
|
protected function passthru($method, array $params) |
1210
|
|
|
{ |
1211
|
|
|
return new static(function () use ($method, $params) { |
1212
|
67 |
|
yield from $this->collect()->$method(...$params); |
1213
|
68 |
|
}); |
1214
|
|
|
} |
1215
|
|
|
} |
1216
|
|
|
|
Adding a
@return
annotation to a constructor is not recommended, since a constructor does not have a meaningful return value.Please refer to the PHP core documentation on constructors.