But why do you want nested subs in the first place? You're not making closures, right? One common way to get "private" helper subs in your module is:

sub something_useful {
   my $x = _helper(shift);
   return $x;
}
sub _helper {
   ...
}

[download]

One major advantage is in testing: the helper subs can be called directly.

In reply to Re: Memory efficiency, anonymous vs named's vs local subroutines by Anonymous Monk
in thread Memory efficiency, anonymous vs named's vs local subroutines by thanos1983

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