[wxperl-users] Re: Perl 5.8 (Marc)

[Mattia B. <mb...@ds...>]

> > Don't use UNIVERSAL::isa, its use is discouraged
> 
> Not arguing with you, but that's a new one on me.  What's your source?
IIRC perl5-porters

> I checked some in the Perl 5.8 doc and I did notice that:
> 
> 	use	UNIVERSAL qw(isa);
They surely talked about that. I probably remembered incorrectly that
using UNIVERSAL::isa was discouraged.

> (which I use a lot and have recommended, oops) is discouraged in favor of:
Me too...

> 	*isa = \&UNIVERSAL::isa;
This has a minor problem.
The problem is that some module may decide to override ->isa to make objects
appear to be in some class they are not blessed into. Using UNIVERSAL::isa
breaks that. Of course few modules actually do that so this is a minor problem.

Sorry for the confusion
Mattia