On Mon, Apr 27, 2009 at 19:05, Quincey Morris <quinceymor...@earthlink.net>wrote:
> On Apr 27, 2009, at 08:10, Martijn van Exel wrote: > > currentNode.lat = (double)[attributeDict objectForKey:key]; >> ... >> Member 'lat' is a double. The above does not work. 'Pointer value used >> where >> float was expected'. So I should dereference? >> >> currentNode.lat = (double *)[attributeDict >> objectForKey:key]; >> > > "Dereference" is the wrong word. What you actually did was *cast*, but that > was the wrong thing to do anyway. > > The result of [attributeDict objectForKey:key] is always an object pointer > (id, NSString*, NSNumber*, etc), never a scalar (int, double, etc). There > are three possibilities here: > [...] Quincey, Thanks for the help. The 'doubleValue' is what I was looking for. Unrelated: one of the XML attributes that needed parsing was a ISO8601 style date string, for which neither NSDate nor NSDateFormatter curiously does not seem to provide a parser. Some looking around provided http://boredzo.org/iso8601parser/ which seems to do the job, but I have to read up on the ISO8601 date format to tell whether the time zone is handled correctly. Thanks again. Martijn _______________________________________________ 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
