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Re: Calculate overlap between 2 ranges of numbers

by jdporter (Canon)
on Oct 22, 2011 at 21:40 UTC ( #933106=note: print w/replies, xml ) Need Help??


in reply to Calculate overlap between 2 ranges of numbers

You could use Set::IntSpan:

use Set::IntSpan; my $r1 = Set::IntSpan->new([ 5 .. 15 ]); my $r2 = Set::IntSpan->new([ 2 .. 20 ]); my $i = $r1->intersect($r2); if ( !$i->empty and ( $i->max - $i->min ) >= 5 ) # criteria { print "hit\n"; } else { print "miss\n"; }
I reckon we are the only monastery ever to have a dungeon stuffed with 16,000 zombies.

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[davido]: yeah, umount -f isn't powerful enough.
[tye]: probably something in the init subsystem that does the mounting that you could disable and reboot.
davido needs to close laptop to board flight home from yapc.
[davido]: I'll look into it in a few hours probably.
[davido]: when i do get to that point I think I'll do it in a vm snapshot just in case. :)
[oiskuu]: tye, you were right: loginuid/sessionid are part of task struct if compiled with AUDITSYSCALL. I have some doubts if you should actually depend on that feature.
[Corion]: oiskuu: Depends on what you want to do with that information
[tye]: I'm not depending on that feature. But I could in this environment. I'm using getlogin(). shrug
[Corion]: For benign logging (which user started this DB instance), it's OK
[tye]: We use auditd for security monitoring. So we can rely on auditing being enabled. I'm not sure who would want to not be able to audit. Maybe some VM inside another system with audit?

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