Re: mixed numeric and string SVs.

[David Mitchell]

> >1. We no longer save conversions, so
> >     $i="3"; $j+=$i for (...);
> >does an aton() or similar each time round the loop
> 
> Well just the 1st time - then it is a number...

Err, option (1) was explicity suggesting we *dont* save the result
of the conversion, so aton() *would* have to be called each time.
(I didnt think this was sensible, I was just suggesting it
for completeness...)