trondkr/testFiletree — pull request #1 by mahal (2014-03-03 17:37:02+00:00)
Title: don't cache as much metadata, use the cached NSURL resources, do a concurrent enumeration

protect access to self.dict with @synchronized, see http://codereview.stackexchange.com/questions/39435/how-to-make-this-recursive-function-thread-safe