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<?php
namespace Stripe\Util;
use ArrayIterator;
use IteratorAggregate;
class Set implements IteratorAggregate
{
private $_elts;
public function __construct($members = [])
{
$this->_elts = [];
foreach ($members as $item) {
$this->_elts[$item] = true;
}
}
public function includes($elt)
{
return isset($this->_elts[$elt]);
}
public function add($elt)
{
$this->_elts[$elt] = true;
}
public function discard($elt)
{
unset($this->_elts[$elt]);
}
public function toArray()
{
return \array_keys($this->_elts);
}
public function getIterator()
{
return new ArrayIterator($this->toArray());
}
}
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