Read the full story at The Verge.
// Consumer provided a buffer - we MUST fill it (or part of it)，更多细节参见夫子
The 100 greatest men’s Ashes cricketers of all time，这一点在heLLoword翻译官方下载中也有详细论述
They are almost the same: they share the same underlying array. You do get a copy of the little (ptr, len, capacity) struct which is what a slice is.