On Jul 10, 2011 2:09 AM, "David McClain" <[email protected]> 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.
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