title: Generate unique temporary file paths
body: <p>I want to generate unique file paths in Objective-C. I looked at <code>NSTemporaryDirectory()</code> but the closest I could get was to <a href="https://stackoverflow.com/questions/215820/how-do-i-create-a-temporary-file-with-cocoa/">this</a> and <a href="http://cocoawithlove.com/2009/07/temporary-files-and-folders-in-cocoa.html" rel="nofollow noreferrer">this</a>. But in the second one they create such a file. I do not want to create it, I just want an NSString for a unique writable path... I don't need paths to folders, just files. How is this possible?</p>