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Update Collection.php #189

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6 changes: 3 additions & 3 deletions src/Collect/Support/Collection.php
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Original file line number Diff line number Diff line change
Expand Up @@ -376,7 +376,7 @@ public function except($keys)
* @param (callable(TValue, TKey): bool)|null $callback
* @return static
*/
public function filter(callable $callback = null)
public function filter(?callable $callback = null)
{
if ($callback) {
return new static(Arr::where($this->items, $callback));
Expand All @@ -394,7 +394,7 @@ public function filter(callable $callback = null)
* @param TFirstDefault|(\Closure(): TFirstDefault) $default
* @return TValue|TFirstDefault
*/
public function first(callable $callback = null, $default = null)
public function first(?callable $callback = null, $default = null)
{
return Arr::first($this->items, $callback, $default);
}
Expand Down Expand Up @@ -741,7 +741,7 @@ public function keys()
* @param TLastDefault|(\Closure(): TLastDefault) $default
* @return TValue|TLastDefault
*/
public function last(callable $callback = null, $default = null)
public function last(?callable $callback = null, $default = null)
{
return Arr::last($this->items, $callback, $default);
}
Expand Down