No. The functions wern't written that way, so they won't do that. However, it's often trivial to make the builtins work on arrays using map and apply.

Examples using a function that returns the transformed value: 

@new = map lc, @old;
@new = map ord, @old;
@new = map { sprintf('%02X', $_) } @old;

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Examples using a function that transforms the value in-place: 

use List::MoreUtils qw( apply );
@new = apply { chomp; } @old;
@new = apply { tr/a-z/n-za-m/; } @old;

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It's particularly easy when the the function uses $_ when no argument is supplied. You can make your own functions work on $_ by using the following pattern: 

sub func {
   for (my $s = @_ ? $_[0] : $_) {
      ... do something with $_ ...
      return $_;
   }
}

$new = func($old);
@new = map func, @old;

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In reply to Re: modifying perl functions without having to write own functions... by ikegami
in thread modifying perl functions without having to write own functions... by argv

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