What are error handling patterns for Core Data in Swift?

In Swift, error handling in Core Data is essential for managing data persistence and ensuring a smooth user experience. Here are some common error handling patterns when working with Core Data:

Using do-catch: This allows you to handle errors gracefully by catching exceptions when saving or fetching data.
Custom Error Types: Define your own error types to categorize and clearly communicate different failure cases related to Core Data operations.
Optionals and Guard Statements: Utilize optionals and guard statements to handle situations where data might not be present, allowing you to respond accordingly.
Logging Errors: Implement logging to keep track of errors that occur during Core Data operations, which can be useful for debugging.
Displaying Alert Messages: Use alert controllers to inform users of any relevant issues, such as a failed data save.

Here's a simple example of error handling in a Core Data save operation:


        do {
            try context.save()
            print("Data saved successfully.")
        } catch let error as NSError {
            // Handle the error by logging it or presenting an alert to the user
            print("Could not save. \(error), \(error.userInfo)")
        }

Core Data Swift error handling do-catch custom error types optional guard statement logging errors alert messages

What are error handling patterns for Core Data in Swift?

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What are error handling patterns for Core Data in Swift?

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