tasks = append(tasks, t)
With a thousand points, you barely notice the delay. With a million, you're doing a million distance calculations for every single query. On a phone updating the map as the user scrolls, that's untenable.
，更多细节参见旺商聊官方下载
View a PDF of the paper titled Package Managers \`a la Carte: A Formal Model of Dependency Resolution, by Ryan Gibb and 4 other authors，更多细节参见同城约会
这种供需错配，正是行业需要改变的核心痛点。