Inheritance in perl is a cooperative enterprise.
Modules need to be designed to allow inheritance.
Modules can also be designed to disallow inheritance.
I don't know if the implementation has changed since
then, but some time ago I
had this problem with Bit::Vector.
in reply to Re: Why is a hash the default "object" in oo perl?
in thread Why is a hash the default "object" in oo perl?
I have had trouble figuring out which modules are
designed to support inheritance. I end up looking
at implementations to try to figure it out.
The 'hidden implementation' idea of OO isn't a reality
in many common perl modules.
To me this appears to be a side effect
of the TIMTOWTDIness of perl OO.
When I am evaluating a module implementation with the
idea that I might want to inherit from it,
my favorite thing to find is a blessed hashref
without a fancy OO-helper module.
As Zaxo says, it is
easy to use and works well.
It should work perfectly the first time! - toma