* The time complexity of the libc++ deque push_front implementation is O(log n) 1. https://1f604.blogspot.com/2021/11/the-libc-implementation-of-stl-deque.html 2. https://news.ycombinator.com/item?id=29367910 * optimizing memset and memcpy 1. https://twitter.com/nadavrot/status/1464364562409422852
