For service pack 1, Microsoft has introduced a new heuristic based on code size and whether or not the call is in a loop.

在Service Pack 1中，微软引入了一个新的基于代码尺寸的启发式算法，来判断调用是否处于一个循环中。

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Surprising results show that if you implement sizeof there is almost no difference in whether calculating the size of a loop in advance.

很奇怪的结果表明，如果你执行size of，那么是否预先计算循环的次数基本上没有什么区别。

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So when the program starts to loop through the files, perhaps to determine the directories overall size, it has to requery the file system one by one.

所以，在程序开始遍历这些文件的时候，假设为了确定目录的总大小，就必须逐一重新查询文件系统。

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Now this happens to be what we would call a linear process, because the number of times I go around the loop is directly related to the size of the argument. If I double 2 the argument, I'm going to double the number of times I go around the loop. If I increase it by five, 5 I'm going to increase by five the number of times I go around the loop.

这恰好是我们会成为,线性复杂度程序的一个例子,因为我要执行循环的次数是,和输入的参数的大小直接相关的,如果我将这个参数乘以,那么我就要将进行循环的次数也乘以2了，如果我把参数加上,那么循环的次数也要加上5了。

麻省理工公开课 - 计算机科学及编程导论课程节选

Experiments currently being undertaken at Stanford, and also by John Price, a physicist at the University of Colorado, will measure the force of gravity over a distance of less than a millimetre (the size of loop expected if there are only two extra gravity-swallowing dimensions).

ECONOMIST: A matter of gravity

Sinofsky explained that "you're in this loop" of ever increasing screen size, more battery to support it and, naturally, more weight.

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