Best way to modify code without breaking stuff.

[André Malo]

Jesse Aldridge wrote:

> I've got a module that I use regularly.  I want to make some extensive
> changes to this module but I want all of the programs that depend on
> the module to keep working while I'm making my changes.  What's the
> best way to accomplish this?

Don't ;-)

If the changes are that extensive it might be considerable to write a new
module and switch the depending code to use that new module when you're
done and they're ready.

As mentioned in another posting revision control is a good thing as well.
Not just for that task.

nd