NSMutableArray check if object already exists
There is a very useful method for this in NSArray i.e. containsObject.
NSArray *array;array = [NSArray arrayWithObjects: @"Nicola", @"Margherita", @"Luciano", @"Silvia", nil];if ([array containsObject: @"Nicola"]) // YES{ // Do something}
I found a solution, may not be the most efficient of all, but atleast works
NSMutableArray *add=[[NSMutableArray alloc]init];for (Item *item in addList){ if ([appDelegate.list containsObject:item]) {} else [add addObject:item];}Then I iterate over the add array and insert items.
Use NSPredicate.
NSArray *list = [[appDelegate.list copy] autorelease];for (Item *item in addList) { NSPredicate *predicate = [NSPredicate predicateWithFormat:@"iName MATCHES %@", item.iName]; NSArray *filteredArray = [list filteredArrayUsingPredicate:predicate]; if ([filteredArray count] > 0) [appDelegate insertItem:item];}