title: How do I check if the time I picked after selecting with datePickerView is within a range (12:00-14:30) on Swift? I have no idea how to start
body: <p><a href="http://i.stack.imgur.com/P0gHI.png" rel="nofollow">This is the screenshot of the UI. Once select book, if the time is not within range, there would be an alertView popup.</a></p>