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.
With rare exceptions, phones are pretty boring these days. The good news is, a boatload of those rare exceptions are about to show up at once, courtesy of Mobile World Congress.
。safew官方版本下载是该领域的重要参考
Андрей Ставицкий (Редактор отдела «Наука и техника»)
Москвичи пожаловались на зловонную квартиру-свалку с телами животных и тараканами18:04