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Buy from Amazon $49.99$21.99 $40.00 $30.00 $20.00 May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May 2016 $40.51, Apr 29 - May 1$35.26, Apr 29 4:04 pm$35.22, Apr 29 4:04 pm$40.51, Apr 29 - May 1$35.78, May 1 2:11 am$35.73, May 1 - May 22$41.91, May 3 - May 6$35.77, May 3 6:32 pm$35.73, May 1 - May 22$41.91, May 3 - May 6$35.78, May 6 - May 17$35.73, May 1 - May 22$43.33, May 10 - May 13$35.78, May 6 - May 17$35.73, May 1 - May 22$44.76, May 17 - May 22$35.78, May 6 - May 17$35.73, May 1 - May 22$44.76, May 17 - May 22$35.77, May 22 1:37 am$35.73, May 1 - May 22$45.31, May 26 - May 30$35.55, May 26 4:36 am$35.50, May 26 4:36 am$45.31, May 26 - May 30$35.30, May 30 - Jun 4$35.25, May 30 6:02 pm$35.30, May 30 - Jun 4$35.25, May 30 6:02 pm$34.99, Jun 4 - Jun 27$35.25, May 30 6:02 pm$35.09, Jun 8 6:00 pm$34.99, Jun 4 - Jun 27$34.99, Jun 4 - Jun 27$34.97, Jun 12 - Jun 16$34.92, Jun 12 - Jun 16$35.44, Jun 20 - Jun 23$34.99, Jun 4 - Jun 27$34.92, Jun 12 - Jun 16$35.17, Jun 27 - Jul 6$34.99, Jun 4 - Jun 27$34.92, Jun 12 - Jun 16$46.07, Jul 1 9:24 pm$35.17, Jun 27 - Jul 6$35.12, Jul 1 9:24 pm$35.17, Jun 27 - Jul 6$35.12, Jul 1 9:24 pm$34.80, Jul 6 - Jul 11$36.45, Jul 11 11:26 pm$34.80, Jul 6 - Jul 11$34.72, Jul 11 11:26 pm$46.07, Jul 14 - Aug 1$36.18, Jul 14 1:44 am$34.47, Jul 14 1:44 am$46.07, Jul 14 - Aug 1$35.68, Jul 17 5:26 pm$35.68, Jul 17 5:26 pm$46.07, Jul 14 - Aug 1$35.45, Jul 21 9:23 am$35.45, Jul 21 9:23 am$46.07, Jul 14 - Aug 1$35.78, Jul 24 11:30 pm$35.73, Jul 24 - Aug 12$46.07, Jul 14 - Aug 1$37.88, Jul 28 - Aug 1$35.73, Jul 24 - Aug 12$45.61, Aug 4 5:01 pm$37.73, Aug 4 5:01 pm$35.73, Jul 24 - Aug 12$45.15, Aug 8 - Aug 19$37.56, Aug 8 10:11 am$35.73, Jul 24 - Aug 12$45.15, Aug 8 - Aug 19$37.28, Aug 12 4:59 am$35.73, Jul 24 - Aug 12$45.15, Aug 8 - Aug 19$35.74, Aug 15 10:46 pm$35.69, Aug 15 10:46 pm$45.15, Aug 8 - Aug 19$35.50, Aug 19 5:10 pm$35.45, Aug 19 5:10 pm$35.45, Aug 19 5:10 pm$34.75, Aug 23 10:46 am$31.61, Aug 23 - Sep 19$34.76, Aug 27 5:43 am$31.61, Aug 23 - Sep 19$27.62, Aug 27 - Jan 18$36.04, Aug 30 11:29 pm$31.61, Aug 23 - Sep 19$27.62, Aug 27 - Jan 18$35.34, Sep 3 7:36 pm$31.61, Aug 23 - Sep 19$27.62, Aug 27 - Jan 18$31.61, Aug 23 - Sep 19$27.62, Aug 27 - Jan 18$26.04, Sep 7 5:22 pm$36.40, Sep 11 2:31 pm$31.61, Aug 23 - Sep 19$27.62, Aug 27 - Jan 18$31.61, Aug 23 - Sep 19$27.62, Aug 27 - Jan 18$25.09, Sep 15 11:23 am$31.61, Aug 23 - Sep 19$27.62, Aug 27 - Jan 18$26.04, Sep 19 - Sep 28$39.57, Sep 23 - Sep 24$27.62, Aug 27 - Jan 18$26.04, Sep 19 - Sep 28$40.17, Sep 28 - Oct 2$27.62, Aug 27 - Jan 18$26.04, Sep 19 - Sep 28$40.17, Sep 28 - Oct 2$27.62, Aug 27 - Jan 18$25.09, Oct 2 8:58 pm$39.76, Oct 6 11:24 pm$27.62, Aug 27 - Jan 18$26.04, Oct 6 - Oct 15$40.36, Oct 11 - Oct 15$27.62, Aug 27 - Jan 18$26.04, Oct 6 - Oct 15$39.95, Oct 18 - Oct 22$35.78, Oct 18 - Oct 22$27.62, Aug 27 - Jan 18$39.55, Oct 26 - Oct 30$27.62, Aug 27 - Jan 18$25.09, Oct 26 3:34 pm$39.55, Oct 26 - Oct 30$27.62, Aug 27 - Jan 18$26.04, Oct 30 2:52 pm$39.65, Nov 3 - Nov 7$35.52, Nov 3 2:33 pm$27.62, Aug 27 - Jan 18$39.65, Nov 3 - Nov 7$35.04, Nov 7 5:20 pm$27.62, Aug 27 - Jan 18$39.75, Nov 11 8:10 pm$27.62, Aug 27 - Jan 18$26.04, Nov 11 8:10 pm$39.85, Nov 16 - Nov 20$34.90, Nov 16 - Nov 24$27.62, Aug 27 - Jan 18$40.35, Nov 24 7:46 pm$34.90, Nov 16 - Nov 24$27.62, Aug 27 - Jan 18$40.94, Nov 29 - Dec 4$33.44, Nov 29 - Dec 4$27.62, Aug 27 - Jan 18$41.53, Dec 9 12:52 pm$33.88, Dec 9 12:52 pm$27.62, Aug 27 - Jan 18$42.11, Dec 14 1:02 pm$32.13, Dec 14 1:02 pm$27.62, Aug 27 - Jan 18$42.68, Dec 19 - Dec 24$27.62, Aug 27 - Jan 18$26.04, Dec 19 - Jan 8$43.25, Dec 29 10:16 am$27.62, Aug 27 - Jan 18$26.04, Dec 19 - Jan 8$43.81, Jan 3 - Jan 13$27.62, Aug 27 - Jan 18$26.04, Dec 19 - Jan 8$43.81, Jan 3 - Jan 13$27.62, Aug 27 - Jan 18$21.99, Jan 13 - Apr 16$43.37, Jan 18 - Jan 23$27.62, Aug 27 - Jan 18$21.99, Jan 13 - Apr 16$43.37, Jan 18 - Jan 23$31.61, Jan 23 - Jan 28$21.99, Jan 13 - Apr 16$42.93, Jan 28 4:34 am$31.61, Jan 23 - Jan 28$21.99, Jan 13 - Apr 16$42.50, Feb 2 - Feb 7$35.60, Feb 2 3:56 am$21.99, Jan 13 - Apr 16$42.50, Feb 2 - Feb 7$36.86, Feb 7 5:55 am$21.99, Jan 13 - Apr 16$42.07, Feb 12 9:39 am$37.12, Feb 12 9:39 am$21.99, Jan 13 - Apr 16$41.65, Feb 17 - Feb 23$36.77, Feb 17 7:45 pm$21.99, Jan 13 - Apr 16$41.65, Feb 17 - Feb 23$36.40, Feb 23 9:14 am$21.99, Jan 13 - Apr 16$41.23, Feb 28 4:53 pm$36.26, Feb 28 4:53 pm$21.99, Jan 13 - Apr 16$40.81, Mar 12 1:55 pm$35.63, Mar 12 1:55 pm$21.99, Jan 13 - Apr 16$39.99, Mar 24 11:53 am$35.74, Mar 24 11:53 am$21.99, Jan 13 - Apr 16$40.09, Apr 5 12:54 am$36.05, Apr 5 12:54 am$21.99, Jan 13 - Apr 16$49.99, Apr 16 4:29 pm$36.03, Apr 16 4:29 pm$21.99, Jan 13 - Apr 16 221,4851,784,907 1,953,125 1,562,500 1,171,875 781,250 390,625 0 May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May 2016

Price Details

New

Latest $49.99 Apr 16, '16
Highest $49.99 Apr 16, '16
Lowest $31.61 Aug 23, '15
Average $40.04 (30d avg)
$41.45 (90d avg)
$41.38 (180d avg)
$40.55 (Lifetime average)
Added Apr 29, 2015

3rd Party New

Latest $36.03 Apr 16, '16
Highest $37.12 Feb 12, '16
Lowest $27.62 Aug 27, '15
Average $35.90 (30d avg)
$35.13 (90d avg)
$31.37 (180d avg)
$32.17 (Lifetime average)
Added Apr 29, 2015

3rd Party Used

Latest $21.99 Apr 16, '16
Highest $37.88 Jul 28, '15
Lowest $21.99 Jan 13, '16
Average $21.99 (30d avg)
$21.99 (90d avg)
$26.15 (180d avg)
$29.83 (Lifetime average)
Added Apr 29, 2015

Sales Rank

30 day average: 1,083,975
90 day average: 1,214,400

Product Description

explains how to build apps in Objective-C and Swift that persist and use data most effectively including the popular Core Data framework. Covering common and advanced persistence patterns, this book prepares any iOS developer to store and retrieve data accurately and efficiently. This book starts by giving you a solid grounding in Core Data, providing a foundation for the rest of the book. With this knowledge, you'll have all you need to master Core Data and power your data-driven applications. You'll see how to work with SQLite and how to create an efficient data model to represent your data. Once you've established your data model, you'll learn how to work with data objects and refine result sets to get the most out of the stored data.The advanced portions of the book begin by showing you how to tune your apps' performance and memory usage, to give you a truly professional edge. You'll see how to version and migrate your data as well, to ensure your data stays organized and efficient. Finally, the book covers managing table views with NSFetchedResultsController.

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