http://www.perlmonks.org?node_id=109590


in reply to Re: Re (tilly) 1: (Golf) Strings-to-Array
in thread (Golf) Strings-to-Array

In Perl 5.6.0 if you passed in literal strings, you got an error about, "Modification of a read-only value attempted". Recopying @_ fixed that.

And the time when $s and $s.0 are different in boolean context is when $s is "0". So when you remove those two characters, you get a bug.

UPDATE
An example that shows the bug:

print map "$_\n", r("0a1", "b0", "0");