The first problem is wasted work again. If cell A1 references B8, and cell A2 also references B8, then when we update all the cells, we still only want to evaluate B8 once, and then reference it in both A1 and A2. We can do this through caching — whenever we calculate a cell’s value, we store it somewhere, and then all future cell references can used the stored value instead of recalculating.
Андрей Ставицкий (Редактор отдела «Наука и техника»)。业内人士推荐新收录的资料作为进阶阅读
這項新徵稅也對英國和澳洲等先前與白宮達成10%關稅協議的國家提出了疑問。，这一点在新收录的资料中也有详细论述
Москвичей призвали не ждать «дружную» весну14:57。业内人士推荐新收录的资料作为进阶阅读
Дачников призвали заняться огородом14:58