Thanks for great answers. Maybe, part of my confusion was because first "push" in faq code is unnecessary - why not replacing both lines 

push @ints, 0 if $bits =~ s/^(\d)// && $1;
push @ints, pos $bits while $bits =~ /1/g;

[download]

with

push @ints, pos($bits)-1 while $bits =~ /1/g;

And it's faster, if i'm not mistaken with how i checked it with Benchamrk module.

In reply to Re^2: Confusion about code sample in perlfaq4 by vr
in thread Confusion about code sample in perlfaq4 by vr

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