Given the NSPathUtilities.h function NSTemporaryDirectory and the NSProcessInfo method globallyUniqueString described in this chapter, add a category called TempFiles to NSString,and in it define a...

Given the NSPathUtilities.h function NSTemporaryDirectory and the NSProcessInfo method globallyUniqueString described in this chapter, add a category called TempFiles to NSString,and in it define a method called temporaryFileName that returns a different, unique filename every time it is invoked.