@jlp765 - good catch. I thought of that, too (I actually wrote that `memSlices` stuff), and almost went back and added a note later, but you beat me to it.
I still am unaware about relative timings on platforms other than what I personally use and would be interested to hear reports, but on Linux/glibc `memSlices` (or more generally `mmap+memchr` however that is invoked) is always fastest in my tests.
