On 30 Jun 2010, at 17:37, Michael Ash wrote: > While we're being pedantic, note that == is not always the same as > "binary equivalence". For example, 0.0 == -0.0, and x != x when x = > NAN.
That's a good point. I spoke inaccurately. > Using == can make sense when you know that your values are exact > integers, which is not an uncommon scenario, but neither is it the > usual one. It may also make sense sometimes with floating point values. An example might be where you have an object that you're using as the key for an NSDictionary; in that case, your -isEqual: method may well want to do a proper equality test. These are, however, special situations. Kind regards, Alastair. -- http://alastairs-place.net _______________________________________________ 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
