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<?php
namespace Palmtree\Chrono\Traits;
trait Immutable
{
abstract public function createClone();
/**
* @param int $value
* @param string $period
*
* @return self
*/
public function add(int $value, string $period)
return $this->cloneCall(__FUNCTION__, \func_get_args());
}
public function subtract(int $value, string $period)
protected function cloneCall($method, $params = [])
$clone = $this->createClone();
$closure = function () use ($method, $params) {
return parent::$method(...$params);
};
$closure->bindTo($clone)();
return $clone;
palmtreephp /
chrono
