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2014/10/15 ¤U¤È 10:14:18

iphone Programming Glossary: sortdescriptor1

Core Data Table View Section Sort by weekdays using NSSortDescriptor

http://stackoverflow.com/questions/2168141/core-data-table-view-section-sort-by-weekdays-using-nssortdescriptor

like this Which sorts alphabetically then by time NSString sectionKey nil switch tab case kByWeekA NSSortDescriptor sortDescriptor1 NSSortDescriptor alloc initWithKey @ day ascending NO NSSortDescriptor sortDescriptor2 NSSortDescriptor alloc initWithKey.. NSSortDescriptor alloc initWithKey @ starttime ascending YES NSArray sortDescriptors NSArray alloc initWithObjects sortDescriptor1 sortDescriptor2 nil fetchRequest setSortDescriptors sortDescriptors sortDescriptor1 release sortDescriptor2 release sortDescriptors.. NSArray alloc initWithObjects sortDescriptor1 sortDescriptor2 nil fetchRequest setSortDescriptors sortDescriptors sortDescriptor1 release sortDescriptor2 release sortDescriptors release sectionKey @ day break case kByWeekB NSSortDescriptor sortDescriptor1..

Core Data, try to use NSPredicate to filter a toMany relationship set but get the “to-many key not allowed here” error

http://stackoverflow.com/questions/3644849/core-data-try-to-use-nspredicate-to-filter-a-tomany-relationship-set-but-get-th

entityForName @ ThemeEntries inManagedObjectContext _context fetchRequest setEntity entity NSSortDescriptor sortDescriptor1 NSSortDescriptor alloc initWithKey @ relevancy ascending NO NSArray sortDescriptors NSArray alloc initWithObjects sortDescriptor1.. NSSortDescriptor alloc initWithKey @ relevancy ascending NO NSArray sortDescriptors NSArray alloc initWithObjects sortDescriptor1 nil fetchRequest setSortDescriptors sortDescriptors predictate filter NSPredicate predicate NSPredicate predicateWithFormat..