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Re: [css-selectors] Proposal: Logical Combinators / Sets

From: Brian Kardell <bkardell@gmail.com>
Date: Wed, 13 Mar 2013 15:57:48 -0400
Message-ID: <CADC=+jcwR40UYs2+cGU0JVtAvq7L0b7_wJ9Scdn+h2YgtN-fYQ@mail.gmail.com>
To: "liam@w3.org" <liam@w3.org>
Cc: Henrik Andersson <henke@henke37.cjb.net>, François REMY <francois.remy.dev@outlook.com>, Bjoern Hoehrmann <derhoermi@gmx.net>, "www-style@w3.org" <www-style@w3.org>
On Wed, Mar 13, 2013 at 3:53 PM, Liam R E Quin <liam@w3.org> wrote:

> On Wed, 2013-03-13 at 20:01 +0100, Henrik Andersson wrote:
>
> > Boolean algebra says that you can fake and using or. !(!X || !Y) == X &&
> > Y It works in the other direction too. !(!X && !Y) == X || Y
>
> For some definition of "you" that probably excludes many Web
> designers :-)
>
> Best,
>
> Liam
>
> --
> Liam Quin - XML Activity Lead, W3C, http://www.w3.org/People/Quin/
> Pictures from old books: http://fromoldbooks.org/
> Ankh: irc.sorcery.net irc.gnome.org freenode/#xml
>
>

Yeah - also why I avoided :xor and stuff :)  Much simpler to explain "only
if all of these are true" "only if none of these are true" etc.


-- 
Brian Kardell :: @briankardell :: hitchjs.com
Received on Wednesday, 13 March 2013 19:58:17 GMT

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