I'm not entirely sure you would necessarily need more lines of code to express it in python or Javascript, to be honest. I'll see if I can give it a shot this weekend. Curious to really know. You could certainly use more, but the same could be said of Haskel, as well.

But I'm not necessarily trying to make a claim that it can't be done in Haskel. More that I have not seen it done. You can claim that the final polish of the original is irrelevant, but I find that claim hard to believe. Especially since I have yet to see an example that has said polish.

Sadly, I don't know how you would really go about proving that one way or the other.