Re: The Null Mull (or, when OO needs more O)

in reply to The Null Mull (or, when OO needs more O)

Since the undef SV is shared between all undefined values, one could modify undef using a feature in Perl 5.8. (I only thought of this because of the solution to #13 of How's your Perl? (II)).

At the beginning of your program (possibly in a BEGIN block) (completely untested):

&Internals::SvREADONLY(\undef, 0);
undef = Object::EveryMethod->new;
&Internals::SvREADONLY(\undef, 1);
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And override Object::EveryMethod for string/num/bool to behave like undef normally does.

"There is no shame in being self-taught, only in not trying to learn in the first place." -- Atrus, Myst: The Book of D'ni.

In Section Meditations