I am having problems with my NSPredicate

Question

I'm trying the following comparison but it does not work.

What is the appropriate syntax to use both the or/and operator within the same context?

NSPredicate* predicate = [NSPredicate predicateWithFormat:@"((day || day2 ==%@) && CourseTitle==%@)",day,courseSelected];
rows = [[courseArray filteredArrayUsingPredicate:predicate]retain];

Answer 1

Try:

NSPredicate* predicate = [NSPredicate predicateWithFormat:@"(((day == %@) OR (day2 == %@)) && CourseTitle==%@)",day, day, courseSelected];
rows = [[courseArray filteredArrayUsingPredicate:predicate]retain];