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<?php |
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namespace Equip; |
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use function Equip\Arr\to_array; |
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class Chain |
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{ |
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/** |
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* Create a new chain from a source. |
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* |
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* @param array|Traversable $source |
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* |
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* @return static |
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*/ |
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public static function from($source) |
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{ |
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return new static(to_array($source)); |
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} |
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/** |
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* @var array |
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*/ |
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private $source; |
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/** |
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* @param array $source |
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*/ |
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public function __construct(array $source) |
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{ |
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$this->source = $source; |
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} |
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/** |
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* Get the current source. |
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* |
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* @return array |
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*/ |
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public function toArray() |
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{ |
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return $this->source; |
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} |
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/** |
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* Check if a key is defined in the source. |
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* |
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* @param mixed $needle |
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* |
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* @return boolean |
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*/ |
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public function hasKey($needle) |
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{ |
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return array_key_exists($needle, $this->source); |
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} |
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/** |
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* Check if a value is defined in the source. |
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* |
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* @param mixed $needle |
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* |
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* @return boolean |
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*/ |
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public function hasValue($needle) |
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{ |
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return in_array($needle, $this->source); |
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} |
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/** |
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* Get a copy with only values. |
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* |
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* @return static |
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*/ |
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public function values() |
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{ |
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$copy = clone $this; |
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$copy->source = array_values($this->source); |
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return $copy; |
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} |
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/** |
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* Get a copy with only keys. |
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* |
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* @return static |
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*/ |
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public function keys() |
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{ |
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$copy = clone $this; |
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$copy->source = array_keys($this->source); |
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return $copy; |
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} |
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/** |
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* Get a copy merged with new values. |
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* |
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* @param array $values |
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* |
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* @return static |
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*/ |
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public function merge(array $values) |
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{ |
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$copy = clone $this; |
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$copy->source = array_merge($this->source, $values); |
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return $copy; |
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} |
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/** |
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* Get a copy intersected with new values. |
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* |
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* @param array $values |
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* |
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* @return static |
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*/ |
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public function intersect(array $values) |
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{ |
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$copy = clone $this; |
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$copy->source = array_intersect($this->source, $values); |
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return $copy; |
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} |
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/** |
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* Get a copy diffed with other values. |
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* |
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* @param array $values |
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* |
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* @return static |
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*/ |
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public function diff(array $values) |
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{ |
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$copy = clone $this; |
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$copy->source = array_diff($this->source, $values); |
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return $copy; |
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} |
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/** |
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* Get a copy with only unique values. |
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* |
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* @return static |
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*/ |
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public function unique() |
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{ |
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$copy = clone $this; |
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$copy->source = array_unique($this->source); |
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return $copy; |
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} |
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/** |
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* Reduce the array with a callback. |
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* |
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* @param callable $fn |
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* @param mixed $initial |
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* |
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* @return mixed |
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*/ |
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public function reduce(callable $fn, $initial = null) |
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{ |
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return array_reduce($this->source, $fn, $initial); |
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} |
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/** |
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* Get a copy filtered with a callback. |
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* |
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* @param callable $fn |
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* |
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* @return static |
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*/ |
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public function filter(callable $fn) |
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{ |
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$copy = clone $this; |
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$copy->source = array_filter($this->source, $fn); |
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return $copy; |
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} |
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/** |
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* Get a copy mapped with a callback. |
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* |
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* @param callable $fn |
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* |
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* @return static |
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*/ |
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public function map(callable $fn) |
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{ |
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$copy = clone $this; |
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$copy->source = array_map($fn, $this->source); |
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return $copy; |
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} |
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} |
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equip /
assist
