Download Safari Books Online apps: Apple iOS | Android

Entire Site

Safari Books Online

    Free Trial

    Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.


    • Create BookmarkCreate Bookmark
    • Create Note or TagCreate Note or Tag
    • PrintPrint
    Share this Page URL
    Help

    Challenges

    Add a Delete Selected Item button.

    Look up the NSError class reference in the developer documentation and create new NSError instances to hand back when saving and loading fails, as mentioned at the end of the chapter.


      

    You are currently reading a PREVIEW of this book.

                                                                                            

    Get instant access to over
    $1 million worth of books and videos.

      

    Start a Free Trial