Photograph: Simon Hill
allocation+copy that the hand-optimized code always does at the end.
，这一点在夫子中也有详细论述
// Synchronously enqueue — this never applies backpressure
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.
In response, Deputy Andy Howell, Assistant Minister for Health and Social Services in Jersey, with responsibility for Women's Health said: "We are committed to strengthening services and support for women."