[ any isNil ifTrue: anyBlock ] bpattern
Virtual memory is conceptually simple but potentially devastating to performance. Every memory access must go through segmentation (add segment base, check limit) and then paging (look up the page table). Naively, paging alone requires two additional memory reads per access -- one for the page directory entry, one for the page table entry.
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雜誌形容兩人的關係帶有交易性質：「克林頓被愛潑斯坦吸引的原因很簡單：他有一架飛機。」
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