I have had questions like yours before, by the way (see http://stackoverflow.com/questions/24173094/c-polymorphic-in..., for example), and I kind of agree that it shouldn't have been closed like that. C++ is a confusing language and there was indeed a good amount to learn from the answer to your question. But you definitely could have handled it much better; get some feedback and maybe edit or make a new post with that feedback and you'd be good to go!
All this is going to trying to show you that your attitude is a little belligerent (it's showing on this HN thread again, even), and changing it goes a long way. I've come to the conclusion that the people on my class's forum and you don't really realize that there's something wrong with how you're communicating. But being polite isn't very hard, and I think you almost managed to do it in that SO thread. Take some time to work on your attitude, and you will get much further :)
Please don't take this in the wrong way. It's up to you to change if you'd like; I'm pointing out the benefits and you don't have to if you don't want to.