I haven't seen details in an Apocalypse, but Damian's
Perl 6 overview has a bit about it. The Apocalypse
specifically mentions *compile-time* scope management,
but Damian is, uh, Damian. (DWIMery obviously. ;)
Is stuff like:
%MY::{'$lexical_var'} = \$other_var;
supposed to be a compile-time or run-time feature?
Modifying the caller's environment:
$lexscope = caller().{MY};
$lexscope{'&die'} = &die_hard;
is especially annoying because it means that I can't
trust lexical variables anymore. The one good thing
about Damian's caller() example is that it appears
in an import() function. That implies compile-time,
but isn't as clear as Larry's Apocalypse.
This feature has significant impact on all parts of
the implementation, so it would be nice if a little
more was known. A basic question: how much performance
is this feature worth?
- Ken
