switch.m

static NSDictionary *titleMapping = nil;
if (!titleMapping) {
 NSString *(^const format)(NSUInteger, NSString *, NSString *) = ^(NSUInteger value, NSString *singular, NSString *plural) {
    return [NSString stringWithFormat:@"%d %@", value, (value == 1 ? singular : plural)];
  };

  titleMapping = @{
    @"Scratches" : ^(MyClass *target) {
      return format([target numberOfScratches], @"Scratch", @"Scratches");
    },
    @"Dents" : ^(MyClass *target) {
      return format([target numberOfDents], @"Dent", @"Dents");
    },
    @"Painted Panels" : ^(MyClass *target) {
      return format([target numberOfPaintedPanels], @"Painted Panel", @"Painted Panels");
    },
    @"Chips" : ^(MyClass *target) {
      return format([target numberOfChips], @"Chip", @"Chips");
    },
    @"Tires" : ^(MyClass *target) {
      return format([target numberOfTires], @"Tire", @"Tires");
    }
  };
}

  NSString *(^getTitle)(MyClass *target) = titleMapping[title];
  return getTitle ? getTitle(self) : nil;