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<?php namespace Arcanedev\Support;
use Illuminate\Support\Collection as IlluminateCollection;
/**
* Class Collection
*
* @package Arcanedev\Support
* @author ARCANEDEV <arcanedev.maroc@gmail.com>
*/
class Collection extends IlluminateCollection
{
/* ------------------------------------------------------------------------------------------------
| Custom Functions
| ------------------------------------------------------------------------------------------------
*/
/**
* Return only unique items from the collection array.
*
* @param string|callable|null $key
* @param bool $strict
*
* @return static
*/
public function unique($key = null, $strict = false)
{
if (is_null($key))
return new static(array_unique($this->items, SORT_REGULAR));
$key = $this->valueRetriever($key);
$exists = [];
return $this->reject(function ($item) use ($key, $strict, &$exists) {
if (in_array($id = $key($item), $exists, $strict)) {
return true;
}
$exists[] = $id;
});
}
/**
* Return only unique items from the collection array using strict comparison.
*
* @param string|callable|null $key
*
* @return static
*/
public function uniqueStrict($key = null)
{
return $this->unique($key, true);
}
/**
* Reset the collection.
*
* @return static
*/
public function reset()
{
$this->items = [];
return $this;
}
}
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