Is that what you want? If it isn't, then you simply need to do a Schwartzian Transform

Using the Schwartzian Transform doesn't help at all. It's the generation of a comparable key that made the difference. 

sub ip_to_key { sprintf "%03d", split /\./, $_[0] }

my @sortedKeys =
    sort { ip_to_key($ipaddr{$a}) cmp ip_to_key($ipaddr{$b}) }
    keys %ipaddr;

[download]

The ST is an optimisation to get more speed out of it. If you really needed speed, this is much faster: 

my @sortedKeys =
    map substr($_, 4),
    sort
    map pack('C4', split(/\./, $ipaddr{$_})) . $_,
    keys %ipaddr;

[download]

In reply to Re^2: Save the resultant of " hash sorted by values " by ikegami
in thread Save the resultant of " hash sorted by values " by sundeep

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