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<?php |
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declare(strict_types=1); |
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namespace CCT\Component\Collections\Interactors; |
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class ArraySegregator extends AbstractInteractor |
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{ |
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/** |
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* Pops one or more elements from the end of the elements. |
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* |
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* @return void |
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*/ |
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public function pop(): void |
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{ |
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array_pop($this->elements); |
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} |
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/** |
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* Shifts the first element from the array. |
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* |
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* @return void |
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*/ |
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public function shift(): void |
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{ |
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array_shift($this->elements); |
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} |
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/** |
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* Applies the given function to each element in the collection and returns |
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* a new collection with the elements returned by the function. |
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* |
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* @param \Closure $func |
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* |
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* @return array |
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*/ |
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public function map(\Closure $func): array |
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{ |
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return array_map($func, $this->elements); |
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} |
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/** |
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* Returns all the elements of this collection that satisfy the predicate p. |
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* The order of the elements is preserved. |
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* |
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* @param \Closure $p The predicate used for filtering. |
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* |
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* @return array A collection with the results of the filter operation. |
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*/ |
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public function filter(\Closure $p): array |
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{ |
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return array_filter($this->elements, $p); |
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} |
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/** |
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* Partitions this collection in two collections according to a predicate. |
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* Keys are preserved in the resulting collections. |
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* |
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* @param \Closure $p The predicate on which to partition. |
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* |
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* @return array[] An array with two elements. The first element contains the collection |
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* of elements where the predicate returned TRUE, the second element |
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* contains the collection of elements where the predicate returned FALSE. |
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*/ |
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public function partition(\Closure $p): array |
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{ |
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$matches = $noMatches = []; |
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foreach ($this->elements as $key => $element) { |
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if ($p($key, $element)) { |
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$matches[$key] = $element; |
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} else { |
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$noMatches[$key] = $element; |
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} |
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} |
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return [$matches, $noMatches]; |
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} |
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/** |
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* Extracts a slice of $length elements starting at position $offset from the Collection. |
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* |
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* If $length is null it returns all elements from $offset to the end of the Collection. |
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* Keys have to be preserved by this method. Calling this method will only return the |
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* selected slice and NOT change the elements contained in the collection slice is called on. |
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* |
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* @param int|null $limit The maximum number of elements to return, or null for no limit. |
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* @param int $offset The offset to start from. |
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* |
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* @return array |
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*/ |
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public function take(int $limit = null, int $offset = 0): array |
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{ |
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return array_slice($this->elements, $offset, $limit, true); |
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} |
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} |
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cct-marketing /
collections
