Robin Houston wrote: > On Tue, Nov 27, 2001 at 07:02:50PM +0100, Newton, Philip wrote: > > (And I'm not sure whether $x is distinguishable from ($x = > > undef). Hm... > > They don't seem to be currently distinguishable AFAICT.
Hm... (Thinks and tries a couple of things with Devel::Peek) so the representation I guessed apparently comes only when the scalar held a value at some point but was then assigned undef... it often keeps the data (e.g. IV = 42 or PV => "Buffy\0") but the POK and ROK flags are turned off (you get a line "FLAGS = ()") which makes the undef. The scalar itself is then not an SvNULL but an SvPVNV or SvIV or SvRV or whatever it was previously. But a variable that never got assigned a value, and one that got assigned undef, appear to look identical, as .robin. and mstevens showed. Mildly interesting. I don't think it's helping Red any, though :) Cheers, Philip -- Philip Newton <[EMAIL PROTECTED]> All opinions are my own, not my employer's. If you're not part of the solution, you're part of the precipitate.
