Question

 NSLog(@"Ci sono %d categorie",category.count);
 for(int c=0; c<category.count; c++){
 CategoryArray * element =[category objectAtIndex:c];
 NSLog(@"******************************");
 NSLog(@"Titolo %@",element.label);
 NSLog(@"Source %@",element.url);
 NSLog(@"******************************");
 [element release];

This is my code! I need to remove all duplicates array… I use this code but I don’t understand why it doesn’t work.

uniquearray = [[NSSet setWithArray:category] allObjects];

Answer 1

you can use following code.

NSMutableArray* filterResults = [[NSMutableArray alloc] init];
BOOL copy;

if (![category count] == 0) {
    for (CategoryArray *a1 in category) {
        copy = YES;
        for (CategoryArray *a2 in filterResults) {
            if ([a1.label isEqualToString:a2.label] && [a1.url isEqualToString:a2.url]) {
                copy = NO;
                break;
            }
        }
        if (copy) {
        [filterResults addObject:a1];
        }
    }
}

And you will get category array without duplicate values.
you can see Edit code. i think this will work.