Thanks Ken,

you are right, it's possible to use my $var; in non-void context, actually I'm regularly prepending warn for debugging.°

> While these features remain experimental, they're rather unwieldy and probably easy to get wrong:

They are indeed not nice to activate, I'd probably write a module bundling those four steps to avoid boilerplate.

But the feature is very nice in many circumstances, Brian d Foy² lists some here:

it's also very handy when working with aliases, and one doesn't want to litter ones code with cryptic $_[N°]

D:\tmp\pm>perl -Mfeature=:all -M-warnings
sub uc_name { my \$name = \$_[0]; $name = uc $name }
$n="ken";
uc_name($n);
say $n
__END__
KEN

[download]

FWIW Perl4 had an aliasing feature with *type-globs, but this was restricted to package vars.

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

°) actually I'm even putting the warn into the line before, like this I'm flexible with (un)commenting it.

# warn
  my $x = ...;

[download]

²) corrected spelling twice (= deux fois ;)

In reply to Re^2: POD for use feature 'declared_refs' wrong by LanX
in thread POD for use feature 'declared_refs' wrong by LanX

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