Collections
A tiny collection library enabling array_* like operations on generators and other traversables.
Collection interface
interface Collection extends IteratorAggregate
{
public function merge(Collection $other): Collection;
public function filter(callable $f): Collection;
public function map(callable $f): Collection;
/**
* @param mixed $initial
* @param callable $f
*
* @return mixed
*/
public function reduce($initial, callable $f);
}Collection implementations
LazyCollection
The lazy collection implementation postpones evaluation of elements until it's necessary.
use Zalas\Collection\LazyCollection;
$c = (new LazyCollection(new \ArrayIterator([1, 2, 3, 4])))
->filter(fn (int $e) => 0 === $e % 2)
->map(fn (int $e) => $e * 2)
;In legacy PHP versions:
use Zalas\Collection\LazyCollection;
$c = (new LazyCollection(new \ArrayIterator([1, 2, 3, 4)))
->filter(function (int $e) {
return 0 === $e % 2;
})
->map(function (int $e) {
return $e * 2;
})
;Installation
composer require zalas/collections
Contributing
Please read the Contributing guide to learn about contributing to this project. Please note that this project is released with a Contributor Code of Conduct. By participating in this project you agree to abide by its terms.
