Objective-C LanguageNSPredicate


Syntax

  • CONTAINS operator : It allows to filter objects with matching subset.

    NSPredicate *filterByName = [NSPredicate predicateWithFormat:@"self.title CONTAINS[cd] %@",@"Tom"];

  • LIKE : Its simple comparison filter.

    NSPredicate *filterByNameCIS = [NSPredicate predicateWithFormat:@"self.title LIKE[cd] %@",@"Tom and Jerry"];

  • = operator : It returns all the objects with matching filter value.

    NSPredicate *filterByNameCS = [NSPredicate predicateWithFormat:@"self.title = %@",@"Tom and Jerry"];

  • IN operator : It allows you to filter objects with specific filter set.

    NSPredicate *filterByIds = [NSPredicate predicateWithFormat:@"self.id IN %@",@[@"7CDF6D22-8D36-49C2-84FE-E31EECCECB79", @"7CDF6D22-8D36-49C2-84FE-E31EECCECB76"]];

  • NOT IN operator : It allows you to find Inverse objects with specific set.

    NSPredicate *filterByNotInIds = [NSPredicate predicateWithFormat:@"NOT (self.id IN %@)",@[@"7CDF6D22-8D36-49C2-84FE-E31EECCECB79", @"7CDF6D22-8D36-49C2-84FE-E31EECCECB76"]];

Remarks

For more details read NSPredicate in Apple documentation