wire 开发文档：square.github.io/wire/
Hand-Coded Weights (Constructive Proofs)，详情可参考旺商聊官方下载
，这一点在51吃瓜中也有详细论述
The dashed circle shows the current best distance. As the algorithm finds closer points, the circle shrinks, which causes more subtrees to fail the "could contain a closer point?" test and get pruned. The search usually gets cheaper as it progresses.，这一点在谷歌浏览器【最新下载地址】中也有详细论述
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view = result.value; // Must reassign