Filtering NSArray with predicate

MBArrayFilter

- (void)test {
  NSArray *test = @[@"ASDASD", @"BAQWEQWE", @"ASDQWEQEW", @"RTYTYERTRWEEWR", @"NBVBCVVA"];
  for (unichar i = 'a'; i <= 'z' ; i++) {
    NSPredicate *filterPredicate = [NSPredicate predicateWithBlock:^BOOL(NSString *evaluatedObject, NSDictionary *bindings) {
      return tolower([evaluatedObject characterAtIndex:0]) == i;
    }];
    NSArray *filteredArray = [test filteredArrayUsingPredicate:filterPredicate];
  }
}