On Jul 10, 2011 2:09 AM, "David McClain" dbm@refined-audiometrics.com wrote:

Gensym can also be used to produce globally (session wide) unique objects.

But this is no different from other objects, such as a cons or array.

The primary difference between an uninterned symbol and any other object that has settable "slots" is its behavior as a form under evaluation. Arrays and most other objects self evaluate; a cons has complex interpretation as a form; but a symbol evaluates to its its current special or lexical value binding. That's why gensyms are mostly use as hygienic names in macro expansions.

There are other ways of doing whar a ge.sym does. Maybe later when I'm not typing on a tiny phone keyboad i'll show one.