[NSManagedObjectContext delete:]: unrecognized selector sent to instance

Question

core data getting on my nerves. i\' m deleting old data and want to insert new data received from server.

now the deleting part gives a \"sigabort\":

Answer 1

do it like this for deleting an object permanently

for (TEventContact *tmpCon in allCons)
{
    [context deleteObject:tmpCon] /// for deleting object in context
}    
[context save]; /// to reflect changes in database you need to save that context

without saving the context it doesn't reflect on data base and that may cause DIRTY_READ for another context