Why an infinite loop with: while ( [managedObjectContext hasChanges] ) [managedObjectContext processPendingChanges]

Question

Should the following while statement not exit after a maximum of one execution?

while ( [self.managedObjectContext hasChanges] )
    [self.managedObjectContext processPendingChanges];

Answer 1

hasChanges remains true while the context has changes that have not been flushed to disk. What you're looking for is save:, which will call through to processPendingChanges in addition to writing changes in the context to disk and altering the changed state of the context.