Investigation under way after vehicle ploughs into building
{ createdAt: 1 },，这一点在谷歌浏览器下载中也有详细论述
Crucially, this distribution of border points is agnostic of routing speed profiles. It’s based only on whether a road is passable or not. This means the same set of clusters and border points can be used for all car routing profiles (default, shortest, fuel-efficient) and all bicycle profiles (default, prefer flat terrain, etc.). Only the travel time/cost values of the shortcuts between these points change based on the profile. This is a massive factor in keeping storage down – map data only increased by about 0.5% per profile to store this HH-Routing structure!。关于这个话题，谷歌浏览器下载提供了深入分析
遇到一个复杂的正则表达式或者是算法题，对着Google搜了半小时，结果复制过来的代码自己都看不懂，最后只能硬着头皮问同事。