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.
圖像加註文字，穆傑塔巴‧哈梅內伊在過去20多年來一直被視為最有可能的接班人那麽，穆傑塔巴·哈梅內伊是什麼人？
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現年56歲的穆傑塔巴是一名教士，被形容為在其父掌權期間累積相當影響力與財富；他與保守派及負責維護國家伊斯蘭體制的伊斯蘭革命衛隊（IRGC）關係密切。
Indeed, Paramount is already in cost-cutting mode, after boss David Ellison merged it with his film studio Skydance last year. Many analysts are expecting further cuts, especially since Paramount took on debt to finance the deal.