How can I create an empty hash-map in clojure

Question

It gives me a ArrayMap as I code

(class (hash-map))

But it comes out a HashMap when I code:

(class (hash-map "" ""))

Question is "How can I create an empty hash-map"?

Answer 1

Another possibility is to use pre-defined EMPTY field:

user=> (clojure.lang.PersistentHashMap/EMPTY)
{}

In my opinion it is better shows your intent.