I just wanted to highlight why it makes sense that assigning to
@_ doesn't write thru to the aliases.
my and local were already mentioned in my footnote, when using typeglobs I'd strongly suggest to prefer *b = \$a; over *b = *a;
But these mechanisms are no big help if you want named parameters in subs cause those are lexicals, (which should be the preferred variable flavor).
> I'd not be surprised at all if there were CPAN modules that implemented this.
see Data::Alias or Lexical::Alias and their discussion in PBP
Perl6 aims to handle aliasing consistently.
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