On Wed, Jan 03, 2007 at 08:46:28AM -0800, Marc Perkel wrote:
>
> David Saez Padros wrote:
> > ... you are doing something wrong, only numbers should be
> > comprable with numbers. ... If the string to compare is not a number
> > (including an empty string) this is an error ...
FWIW I concur with that. Performing numeric operations on non-numeric
operands is an error, and should be detected and stopped ASAP.
> A null and a blank string are not the same thing either. Are you going
> to treat strings that way too?
Not a fair comparison IMO, because although variables can be null, the result
of string expansion can (AFAIK) never be null. (e.g. h_Cc may be null, but
expanding $h_Cc: yields the empty string). Since the operands of string ops
(e.g. eq) are always acquired by first performing a string expansion, which
can *only* yield a (possibly empty) string, the operands can never be anything
but strings. Unless I've missed something.
--
Dave Evans
Power Internet
http://www.powernet.co.uk/~davide/about-powernet.txt
