It's Clojure syntax for keyword namespace alias.

since it's special character I can't search :: on clojure docs neither github or google. could you give me a hint how can I learn about it more

I don't understand why :: necessary or how to use it 🙂

https://blog.jeaye.com/2017/10/31/clojure-keywords/

Also consider reading something like Clojure for the Brave and True or any Clojure book really. In the meantime: https://www.braveclojure.com/do-things/

There is a section on keywords there

thank you .craftybones

:welcome 🙂

Also @UJ35GLZU7: https://clojure.org/guides/faq

thank you it was really helpful 🙂