the first append allocates a backing store of length 4 from the stack.
There's a tradeoff: a lower capacity means you can skip more space during queries (you zoom in faster), but the tree has more nodes and uses more memory. A higher capacity means fewer nodes but each node requires checking more points linearly. As a starting point, capacities between 4 and 16 are reasonable defaults, though the best value depends on your data distribution and query patterns.
，推荐阅读Line官方版本下载获取更多信息
当下，餐饮行业正处于洗牌迭代的关键时期，关店潮与新机遇并存。每一名从业者都见证了行业红利的爆发，也亲历了市场的波动与挑战。
FT Edit: Access on iOS and web