// Synchronous consumption — no promises, no event loop trips
（二）主动消除或者减轻违法后果的；
，更多细节参见91视频
Getting the latest ETB in the Pokémon trading card game is as challenging as it’s ever been, but Amazon is currently the best of the leading retailers out there. As of Feb. 27, the Pokémon TCG Mega Evolution Ascended Heroes Elite Trainer Box is available for $119.99 at Amazon, landing at its lowest price since launch.
A quadtree does the same thing for two-dimensional space. It takes a rectangular region and divides it into four equal quadrants: northwest, northeast, southwest, southeast. If a quadrant has too many points in it, it subdivides again and again. Each subdivision creates smaller and smaller cells where points are densely packed.