[RndTbl] Funny comment
Chris Lawson
cl at foo.tinfoilhat.ca
Mon Mar 9 00:49:25 CDT 2015
More on secret perl operators: http://search.cpan.org/~book/perlsecret-1.012/lib/perlsecret.pod
Heed the word of warning!
Chris
On Sat, 28 Feb 2015, Trevor Cordes wrote:
> I had to confirm what $x=!!$y meant in perl. Remarkably, typing !! or
> "!!" or \!\! into google gives you nothing. Had to use English.
>
> Got this:
>
> http://stackoverflow.com/questions/2168406/what-does-double-exclamation-point-mean
>
> The +42 answer is quite good. Exec summary: !! is good for cleaning vars
> into 1 (true) or '' (false), which is important to keep warnings from
> complaining about undef vars.
>
> Anyhow, read the comments in the +42 answer. Hehehe.
>
> Let the flamewars begin!
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