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Learning Core Data for iOS: A Hands-On Guide to Building Core Data Applications by Tim Roadley

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15. Taming iCloud

Only those who attempt the absurd can achieve the impossible.

Albert Einstein

In Chapter 14, the basic steps to integrate Core Data with iCloud were demonstrated. However, a few areas still need to be addressed to ensure that the user’s iCloud experience is as seamless as possible. For example, when the iCloud account changes or iCloud ‘Documents and Data’ is disabled, then Core Data should be reset and an appropriate persistent store loaded in response. In addition, when multiple iCloud-enabled devices are in play, there is a risk that some data may be duplicated. Techniques for handling data duplication will be discussed as they are implemented in Grocery Dude. You’ll also be shown how to seed iCloud from data found in the ...

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