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<?php |
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namespace Collections\Traits; |
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use Collections\Iterable; |
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use Collections\VectorInterface; |
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trait StrictIterableTrait |
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{ |
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use CommonMutableContainerTrait; |
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/** |
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* {@inheritDoc} |
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* @return $this |
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*/ |
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public function map(callable $callable) |
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{ |
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$res = new static(); |
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foreach ($this as $v) { |
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$res[] = $callable($v); |
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} |
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return $res; |
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} |
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/** |
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* {@inheritDoc} |
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* @return $this |
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*/ |
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public function mapWithKey($callback) |
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{ |
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$res = new static(); |
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foreach ($this as $k => $v) { |
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$res[$k] = $callback($k, $v); |
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} |
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return $res; |
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} |
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/** |
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* {@inheritDoc} |
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* @return $this |
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*/ |
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View Code Duplication |
public function filter(callable $callable) |
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{ |
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$res = new static(); |
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foreach ($this as $v) { |
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if ($callable($v)) { |
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$res[] = $v; |
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} |
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} |
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return $res; |
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} |
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/** |
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* {@inheritDoc} |
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* @return $this |
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*/ |
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View Code Duplication |
public function filterWithKey($callback) |
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{ |
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$res = new static(); |
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foreach ($this as $k => $v) { |
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if ($callback($k, $v)) { |
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$res[$k] = $v; |
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} |
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} |
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return $res; |
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} |
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/** |
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* {@inheritDoc} |
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* @return $this |
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*/ |
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View Code Duplication |
public function zip(Iterable $iterable) |
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{ |
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$res = new static(); |
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$it = $iterable->getIterator(); |
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foreach ($this as $v) { |
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if (!$it->valid()) { |
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break; |
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} |
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$res[] = new Pair($v, $it->current()); |
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$it->next(); |
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} |
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return $res; |
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} |
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/** |
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* {@inheritDoc} |
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* @return $this |
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*/ |
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public function take($size = 1) |
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{ |
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$res = new static(); |
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if ($size <= 0) { |
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return $res; |
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} |
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foreach ($this as $v) { |
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$res[] = $v; |
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if (--$size === 0) { |
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break; |
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} |
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} |
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return $res; |
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} |
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View Code Duplication |
public function takeWhile(callable $callable) |
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{ |
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$res = new static(); |
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foreach ($this as $v) { |
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if (!$callable($v)) { |
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break; |
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} |
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$res[] = $v; |
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} |
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return $res; |
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} |
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public function skip($n) |
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{ |
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$res = new static(); |
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foreach ($this as $v) { |
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if ($n <= 0) { |
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$res[] = $v; |
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} else { |
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--$n; |
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} |
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} |
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return $res; |
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} |
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public function skipWhile(callable $callable) |
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{ |
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$res = new static(); |
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$skip = true; |
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foreach ($this as $v) { |
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if ($skip) { |
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if ($callable($v)) { |
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continue; |
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} |
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$skip = false; |
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} |
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$res[] = $v; |
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} |
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return $res; |
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} |
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View Code Duplication |
public function slice($start, $length) |
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{ |
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$res = new static(); |
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if ($length <= 0) { |
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return $res; |
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} |
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foreach ($this as $v) { |
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if ($start !== 0) { |
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--$start; |
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continue; |
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} |
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$res[] = $v; |
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if (--$length === 0) { |
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break; |
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} |
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} |
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return $res; |
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} |
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public function concat(\Traversable $iterable) |
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{ |
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$res = []; |
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foreach ($this as $v) { |
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$res[] = $v; |
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} |
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foreach ($iterable as $v) { |
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$res[] = $v; |
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} |
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$this->container = $res; |
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return $this; |
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} |
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/** |
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* {@inheritDoc} |
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* @return $this |
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*/ |
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public function first() |
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{ |
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foreach ($this as $v) { |
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return $v; |
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} |
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return null; |
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} |
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/** |
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* {@inheritDoc} |
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* @return $this |
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*/ |
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public function last() |
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{ |
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$result = $this->toArray(); |
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return array_pop($result); |
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} |
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/** |
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* {@inheritDoc} |
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* @return $this |
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*/ |
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public function each(callable $callable) |
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{ |
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foreach ($this as $v) { |
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$callable($v); |
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} |
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return $this; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function exists(callable $fn) |
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{ |
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foreach ($this as $element) { |
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if ($fn($element)) { |
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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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View Code Duplication |
public function concatAll() |
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{ |
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/** @var VectorInterface $results */ |
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$results = new static(); |
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$this->each(function (Iterable $subArray) use ($results) { |
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$subArray->each(function ($item) use ($results) { |
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$results->add($item); |
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}); |
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}); |
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return $results; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function reduce(callable $callback, $initial = null) |
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{ |
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return array_reduce($this->toArray(), $callback, $initial); |
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} |
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} |
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