Quite often Clojure hackers need to interoperate with various Java classes. To do that they have to import those classes into the namespace. It is easy if you know the full name of the class, together with its package, but what if you don't? In that case you have to google where the sought class is located, and then type in the whole path to it.
Java developers who use any decent IDE are not familiar with such problem. They just type in the short name of the class, and the auto-completion offers them the list of all classes short name of which matches what they typed in. But can we have something like that for Clojure? Of course we can!
It will work only inside the :import block of namespace declaration since it
uses Compliment context parsing to figure out where the completion was called.
This feature will soon land to CIDER. You can try it out right now if you use
the bleeding edge cider-nrepl (that is, 0.9.0-SNAPSHOT), and also update the
ac-cider from MELPA to the latest version.