jcwren (whose nick I CONTINUALLY mistype as 'jcrewn')
suggested I define the limits of this function. It takes
domain names, dotted IP addresses, and large decimal numbers.
It RETURNS dotted IP addresses though.
require "IPsort.pl"; # assuming that's where you put it
@IPs = IPsort(qw(
12.43.12.65 48.23.6.1 4.1.64.23 www.bergen.org 84394239
));
$_="goto+F.print+chop;\n=yhpaj";F1:eval | [reply] [d/l] |
japhy's code is certainly very quick, Benchmarking about
43% better than anything I could come up with on short notice.
The 'radix_sort' is obviously more efficient for this kind of
application than the built in sort of Perl.
However, under Perl 5.6 + strict + '-w', the following change
is required to avoid compilation errors:
sub IPsort {
map inet_ntoa($_),
IP_radix_sort
map inet_aton($_),
@_;
}
The alternative code which Benchmarks in at #2, but has
the advantage of simplicity:
sub byip { inet_ntoa($a) cmp inet_ntoa($b) }
foreach (sort byip @ip_list) ...
BTW, I tested both with 100_000 random IP addresses by 10
runs (approx 86 to 150s per test).
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