On Oct 27, 1:10 pm, Terry Reedy <[EMAIL PROTECTED]> wrote: > [EMAIL PROTECTED] wrote: > > Robert Kern: > >> This is similar to implementing "Undo" functionality in applications.< > > > In a quite-high-level language (like Python, but not necessarily in > > Python itself) it may become eventually advantageous to add some (even > > limited) built-in form of undo. > > Right now, I believe, one could develop an undo module with undolist and > undodict classes that wrap instance mutations with an append to an > undoinfo list.
The trick would be forking instances, so that you could operate on separate histories/branches independently. Not necessary for most undo purposes, of course. -- http://mail.python.org/mailman/listinfo/python-list
