We want to take XML data and convert it to an NSDictionary object, but we don't want to manually iterate over the XML. Is there an easy way to do this? How are you doing web services for your iPhone app?
Do you control the web service? If so, throw XML out the window. The open source JSON Framework on Google Code kicks ass. My iPhone app, Graffitio (http://graffit.io), uses Rails on the server side spitting out JSON to the iPhone app. Its awesome.
If you are asking specifically about Xcode (the IDE), I know it parses XML because it syntax-colors XML files that I open, and its code-folding brackets support hierarchies of open/close tags.
If its a restful web service you could try http://github.com/yfactorial/objectiveresource/tree/master . It's basically a port of Active Resource to Obj C. You can use it if its not a restful service you just have to override some functions.