save(completion:)

Saves any changes you’ve made in the data store.

Declaration

func save(completion: (@Sendable ((any Error)?) -> Void)? = nil)

func save() async throws

Parameters

completion:
A closure the method calls on completion of the save operation with an optional error value that indicates the reason for failure, if any.

Mentioned in

Recording student progress

Discussion

important:

You can call this method from synchronous code using a completion handler, as shown on this page, or you can call it as an asynchronous method that has the following declaration:

func save() async throws

For information about concurrency and asynchronous code in Swift, see Calling Objective-C APIs Asynchronously.