CI 3 RC Session unset in associative array

Ok, thank you. For those who read this later, the doc change is as followed, quoted from the commit link:

Previously, this method used to accept an associative array of
+ ``'key' => 'dummy value'`` pairs for unsetting multiple keys. That
+ however makes no sense and you now have to pass *only* the keys, as
+ the elements of an array.
+
+ ::
+
+ // Old
+ $this->session->unset_userdata(array('item' => '', 'item2' => ''));
+
+ // New
+ $this->session->unset_userdata(array('item', 'item2'));

CI 3.1 Kubuntu 19.04 Apache 5.x  Mysql 5.x PHP 5.x PHP 7.x
Remember: Obfuscation is a bad thing.
Clarity is desirable over Brevity every time.