print(p.y); // 150
Nested arrays, [0; n] fill, triple nested loop，这一点在新收录的资料中也有详细论述
。新收录的资料对此有专业解读
We only update cells that actually need to be updated. Any cells that aren’t affected by the input are left untouched. (“Fine-grained”)
Three-phase entity matching:，更多细节参见新收录的资料
"But the amazing thing about this notebook is that throughout it, it's just full of illustrations and cartoons," he says.