[Openmcl-devel] inverse function

[Raffael Cavallaro]

On Feb 13, 2010, at 2:30 PM, Taoufik Dachraoui wrote:

> If you record all side-effects it would be possible to revert back the side-effects.


Ron's example of delete-file would require that you maintain a cache of all deleted files indefinitely. More or less the defeats the purpose of delete-file, no?

Side effects have impacts beyond your lisp image, even beyond your machine. No amount of state saving will allow you to apply an inverse function of #'launch-all-intercontinental-ballistic-missiles.

warmest regards,

Ralph


Raffael Cavallaro
raffaelcavallaro at me.com