Re: Truth and Falsehood

[jo37]

The "special false" is dual valued. You can reproduce it like this:

$false = '';
$foo = $false + 0;

(Which gives a warning.) Now "$false" is exactly the same as "not 1".

Or more explicit:

use Scalar::Util 'dualvar';
$false = dualvar(0, '');

[haukex]

Or just !1 ;-)