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I am not sure if the following are errata but I thought they were worth highlighting.

For for chapter 15 I was working from the version of the code on GitHub (Chapter15.1.UpdatesNeedFixing) using Xcode 9.4.1 and I noticed that I was not seeing runtime issues relating to ambiguous layout as suggested in section 15.6.2 pages 467/468, the issue was there and being flagged in the size inspector, but no runtime issue was being displayed.

When running the unit tests from the branch for Chapter15.3.Tested the tests fail, as they do not reset the books array as described in one of errata items.

As described in the book (and in branch Chapter15.3.Tested), the UI tests will fail if there hasnt been a version of the application on the simulator before as the "onboarding" screen will be shown. I am not sure if this a realistic concern but thought it might be worth mentioning.

I have tried to learn iOS development from a couple of books before and this is the first time I have completed one.

Thank you