Updating attributes core data updating procedure huawei e220

// Assuming encapsulating Type has a reference to managed object context let new Entity = NSEntity Description.insert New Object For Entity For Name("My Entity", in Managed Object Context: self.managed Object Context) as!

This is the second article for our Core Data series.

Previously, we gave you a brief introduction of Core Data and created a simple app to store all your device information.

For information about the tutorial series, see the first tutorial in the series.

In the previous tutorials you worked with a simple data model that was composed of three entities.

If that happens we'll end up with a stale data visible on the screen.

The recommended approach to working around that in Core Data are notifications. We have to handle initial fetch and future updates in (two) completely different ways. It's not just me too, as it's against current development practices, such as FRP.

However, we only showed you how to insert records into data store through Core Data API and left out the update & delete operations.

Note: If this is the first time you learn about Core Data, we recommend you to read the first tutorial.

Let’s focus on the code of commit Editing Style method for deleting the managed object from database.

Like saving data, we first grab the manage object context.

When I started writing this article I planned to show how to use to elegantly handle the use case we're discussing.

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