On Tue, Jun 21, 2016 at 05:47:59PM +0900, Simon Walter wrote: [cut]
> >Be careful, because conditional expressions in C are subject to > >"short-circuiting", meaning that only the minimum number of > >expressions sufficient to determine the value of a chain of && and || > >will be evaluated. In particular, a chain of || expressions will be > >evaluated until there is one that evaluates to TRUE (!=0), while a > >chain of && is evaluated until there is one of them which evaluates to > >false (==0). > > > > Isn't that how AND and OR work in most programming languages? Mind you, I am > not familiar with that many. I didn't say that short-circuiting is a peculiarity of C :) I simply said that short-circuiting is how C evaluates conditional expressions. There are many cases (such as that of FORTRAN) in which short-circuiting can be enabled or disabled at compile time, many other cases (e.g. most of the dialects of BASIC and some other esoteric languages) in which short-circuting does not exist, and many more cases in which the language supports both eager and short-circuit boolean operators (e.g., Java, Python, Perl, Ruby, etc.) Boolean expressions in C are always subject to short-circuting. HND KatolaZ -- [ ~.,_ Enzo Nicosia aka KatolaZ - GLUGCT -- Freaknet Medialab ] [ "+. katolaz [at] freaknet.org --- katolaz [at] yahoo.it ] [ @) http://kalos.mine.nu --- Devuan GNU + Linux User ] [ @@) http://maths.qmul.ac.uk/~vnicosia -- GPG: 0B5F062F ] [ (@@@) Twitter: @KatolaZ - skype: katolaz -- github: KatolaZ ] _______________________________________________ Dng mailing list [email protected] https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
