Just a quick warning: if the string contains 0s, the chop solution stops as soon as one is found. Also chop does not set $_ to the removed character.

A version that fixes both problems, and is still faster than unpack is 

my $s = reverse $string;
my $c;
$c = chop $s while length $s;

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Perl 6 - second systems done right

In reply to Re^2: Efficient walk/iterate along a string by moritz
in thread Efficient walk/iterate along a string by gje21c

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