(alias alias namespace-sym)
Add an alias in the current namespace to another namespace. Arguments are two symbols: the alias to be used, and the symbolic name of the target namespace. Use :as in the ns macro in preference to calling this directly.
(require 'clojure.string)
;;=> nil
(alias 'string 'clojure.string)
;;=> nil
(string/capitalize "hONdURas")
;;=> "Honduras"
;; The alias can also be created when the
;; namespace is required using the :as keyword.
(require '[clojure.string :as string])
(string/capitalize "hONdURas")
;;=> "Honduras"