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# SPLIT THE IP-ADDRESSES INTO FOUR =STRINGS= BY # THE PERIOD CHARACTER. my ($a1, $a2, $a3, $a4) = split('.', @$a);

The split built-in function does not use single-quotes around a  /PATTERN/ argument to 'meta-quote' the argument: the  '.' in the above really is trying to split on "any character except newline". Use  '\.' to split on a literal period.

>perl -wMstrict -le "my $s = 'a.bb.ccc.d'; ;; my @ra = split '.', $s; print 'naked dot'; printf qq{ '$_'} for @ra; print '@ra elements: ', scalar @ra; ;; @ra = split '\.', $s; print 'escaped dot'; printf qq{ '$_'} for @ra; " naked dot @ra elements: 0 escaped dot 'a' 'bb' 'ccc' 'd'

In reply to Re^2: Sort hash with values by AnomalousMonk
in thread Sort hash with values by Rahul Gupta

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