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Re: Parameter-driven confusion

by shmem (Chancellor)
on Dec 22, 2019 at 00:25 UTC ( #11110495=note: print w/replies, xml ) Need Help??


in reply to Parameter-driven confusion

What Ikegami says. And there's the "%v" template (vector flag) for sprintf. So, since this is in obfuscation, here's a golfed cidr calculator:

#!/usr/bin/perl # file cidr.pl $m=pack B32,pop=~'/'x$';printf"$` network %vd broadcast %vd netmask %v +d\n",($z=eval$`)&$m,$z|~$m,$m
Note the eval$` bit, which is essentially what happens in your code. Usage example:
shmem [qwurx] ~ > cidr.pl 172.16.242.150/27 172.16.242.150 network 172.16.242.128 broadcast 172.16.242.159 netmask + 255.255.255.224

This cidr appeared one long gone day on IRC in the perlgolf channel iirc.
I guess it is off the keyboard of tybalt89, but I might be wrong.

perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'

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