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Reply to Preserving Core Data relationships in a merge policy
I'm using the following merge policy to skip certain attributes by being trumped. I didn't test it with relationships yet, but I don't see why it shouldn't work.It would be great if you give some feedback here when you test it.override func resolve(constraintConflicts list: [NSConstraintConflict]) throws { guard list.allSatisfy({ $0.databaseObject != nil }) else { print("NSMergeByKeepingPropertiesPolicy is only intended to work with database-level conflicts.") return try super.resolve(constraintConflicts: list) } for conflict in list { for conflictingObject in conflict.conflictingObjects { for key in conflictingObject.entity.attributesByName.keys { let databaseValue = conflict.databaseObject?.value(forKey: key) if key == #keypath(MyNSManagedObject.MyRelationshipIDontWantToBeUpdated) { continue } conflictingObject.setValue(databaseValue, forKey: key) } } } try super.resolve(constraintConflicts: list) }
May ’20
Reply to querying steps data without stopping query
Sorry, I have no experience with obj c."The way i plan to implement is to just observe if there are any changes. If there are then run the original query to retrieve those changes."That's exactly what HKObserverQuery does. See documentation: https://developer.apple.com/documentation/healthkit/hkobserverquery/executing_observer_queries-> "The observer query’s update handler does not receive any information about the change—just that a change occurred. You must execute another query, for example an HKSampleQuery or HKAnchoredObjectQuery, to access the changes."
Apr ’20
Reply to search array of HKQuantitySample (steps taken) with predicate for NSDates
If you are comparing against > previous day and < next day, it's perfectly correct to show the total of today and previous day. Because it includes the times. if your previous day is set to 0:00 and you check against > 0:00 then 0:01 already qualifies. Thats still data for yesterday, but thats what you asked for in your predicate. Please see my previous answer again. You first need to start of the day for today. Then startDate needs to be bigger or equal to that and smaller to start of next day. So if you want everything for today, you need:today at 00:00 <= startDate < tomorrow at 00:00
Apr ’20
Reply to UITableView sometimes not updating
Is your function "reloadTableData()" called if you search?In general I would not check in every function if user is filtering and then access different lists.I would always use self.filteredSectionCustomers and make sure, that if there is nothing in the search field, to simply copy your self.sectionCustomers to self.filteredSectionCustomers. This way self.filteredSectionCustomers is always correct filled. If you change self.filteredSectionCustomers you will also have to reload your tableview
Apr ’20
Reply to Case insensitive Entity constraints in Core Data
You could just add a 'name_lowercased' attribute to your data model and make this your unique constraint instead. You can fill your object property with your 'name' and a .lowercased() call then.After all the name "aPpleS" is different from "Apples".If you really don't want that, there also is the option to implement your own MergePolicy, but that seems to be too much for your case.
Apr ’20