CoreData-processPendingChanges and save

Source: Internet
Author: User

processPendingChangesChanges the status chart of the current object;

processPendingChangesIt is similar to telling the word processor to update its internal status after editing the document, but not save it to the disk. Mostly used to update data on the user interface;

processPendingChangesIt is often used to run multiple contexts on a separate thread;

In MacOS, it plays a greater and more universal role;

saveSave to disk;

CallsaveWill be called automaticallyprocessPendingChanges;

We often use the save method when saving data to the database;

Save and processPendingChanges
All are NSManagedObjectContext class methods;

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