duplicate, please check before submitting:<p><a href="https://news.ycombinator.com/item?id=23273615" rel="nofollow">https://news.ycombinator.com/item?id=23273615</a><p><a href="https://news.ycombinator.com/item?id=23272222" rel="nofollow">https://news.ycombinator.com/item?id=23272222</a>