gensym

creates a unique symbol, useful in macros

If an unqualified symbol is provided, that symbol will be used to clarify the uniquely generated symbol. This function provides the underlying behavior for hash-tailed symbols in syntax-highlighting macros.

An Example

(let [s (gensym 'var)]
  (list 'ale/let [s "hello"] s))

;; is equivalent to
``(let [var# "hello"] var#)

This example will return “hello”.