On Tue, 15 Jun 2004 00:17:55 +0900, you wrote:

>I think the best way to get the behaviour you want is to use a hash. 

it seems to be more  work (and lines of code) than  it needs to be for
just one variable.

i was surprised that ruby didn't have a simple undefine function. and
for the oo'ness of it, it could look like x.undefine. no more x :)