Le 3 août 2011 à 16:40, Thomas Davie a écrit : > > On 3 Aug 2011, at 15:15, Scott Ribe wrote: > >> On Aug 3, 2011, at 7:54 AM, Thomas Davie wrote: >> >>> Not really – both C ands are the same and… they're just operating on >>> different representations of booleans. >> >> No, they're not the same at all. One is a bitwise operation on binary ints. > > Yes – it performs the logical and operation on booleans represented by bits > (lots of booleans at once in this instance). The other performs the same > logical and operation on booleans represented by entire ints. Same op, > different representations. >
They are 2 different operators. One important difference for instance is that if you write if (a() & b()), both a() and b() will always be executed, while if you write if (a() && b()), b() will be executed only if a() is true. -- Jean-Daniel _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
