On Tuesday, 24 August 2010, at 13:32:06 (+1000), David Seikel wrote: > I'm going to agree that !! is unreadable. Um, does that mean > negate the negation, hence do nothing, or is their an obscure !! > operator I have somehow missed in my decades of C programming? > > Don't think I have ever seen it before, so would not count is as "well > known C practice". No doubt for the same reason that double negatives > are discouraged in English. Not being equal to NULL says something, > negating the negation is just noise.
Double negation insures that whatever the compiler's default boolean value is (sometimes 1, sometimes -1, but theoretically could be whatever non-zero value it wants, so long as it's consistent) gets assigned/tested. The double negation insures that any true value gets negated to false then negated again to the compiler's inate true value. Unfortunately raster thinks anyone who prefers the original notation over !! simply doesn't know the above and thus needs to learn something. So we're all just morons who don't know anything, and raster is always right. Again. Michael -- Michael Jennings (a.k.a. KainX) http://www.kainx.org/ <m...@kainx.org> Linux Server/Cluster Admin, LBL.gov Author, Eterm (www.eterm.org) ----------------------------------------------------------------------- "Come stand a little bit closer. Breathe in and get a bit higher. You'll never know what hit you when I get to you." -- Savage Garden, "I Want You" ------------------------------------------------------------------------------ Sell apps to millions through the Intel(R) Atom(Tm) Developer Program Be part of this innovative community and reach millions of netbook users worldwide. Take advantage of special opportunities to increase revenue and speed time-to-market. Join now, and jumpstart your future. http://p.sf.net/sfu/intel-atom-d2d _______________________________________________ enlightenment-devel mailing list enlightenment-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
