もうそう

PatternMatch.m

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    //
    // We NEED this kind of pattern matcher, don't we!? ;(
    //
    match(@[segue.identifier, segue.sourceViewController, segue.destinationViewController])
    {
        case @[@"Special", _, _]: ^(_, _, _){
            [self doSomething];
        }
        case @[_, [MyViewController class], [MyDetailViewController class]]: ^(_, _, MyDetailViewController *vc){
            vc.someInfo = self.someInfo;
        }
        case @[_, [MyViewController class], [MyModalViewController class]]: ^(_, _, MyModalViewController *vc){
            vc.someInfo = self.someInfo;
        }
    }
}