On 27 Oct 2008, at 3:28 am, Michael Ash wrote:
For this particular case, it would be roughly just as fast and more reliable to do something like: if([myNumber objCType][0] == 'f') The type encoding characters are documented here: http://developer.apple.com/documentation/Cocoa/Conceptual/ObjectiveC/Articles/chapter_13_section_9.html
Cool, thanks.
Also note that NSNumber is smart enough to automatically convert its internal representation to whatever you ask for. So for example if 'double' encompasses every value you might need, then it's safe to simply use [myNumber doubleValue] even if you created it as an int or float value.
Understood, though in fact that's a slight hindrance in my case. Given an arbitrary NSNumber, I need to know its type - int, bool or float at the very least. If it gets converted to some other representation internally, it means that I could find types "mutating" from float to double, say.
Still, I have it working and it seems to be OK for now. I can live with float->double for example, though bool->int would be a problem. However it seems that doesn't occur.
thanks, Graham _______________________________________________ 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 [EMAIL PROTECTED]
