编程术语
很久以前，我的大学教授定义了一个术语，表示变量定义与其用法之间的源代码行数。
该课程基本上认为，这两个值越接近，从长远来看就越容易维持。
我的 Google-Fu 一直很弱。
描述这种关系的术语是什么？
A long time ago, my college professor defined a term which meant the number of source lines between a variable definition and its usage.
The lesson basically argued that the closer the two values are, the easier it will be to maintain over the long run.
My Google-Fu has been weak.
What is the term that describes this relationship?
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在此页面上找到 http://www.ppig.org/papers/11th-douce。 pdf，在文档的第 6 页，它讨论了
对象关系度量，或ORM，并给出了定义和计算方法。我想这就是您可能正在寻找的。是代码空间复杂度吗？
Found on this page http://www.ppig.org/papers/11th-douce.pdf , on page 6 of the document it talks about
Object Relation Measure, orORM, and gives the definition and way to calculate it. I think this is what you might be looking for.is it Code spatial complexity ?
我在阅读 Code Complete 2 时第一次遇到这个概念。
我认为您正在寻找的术语在那本书中是“跨度”，它明确是对变量的引用之间的行数。在我的解释中，在连续行上声明和使用的变量的跨度为 0。
该概念也可重用于对该变量的其他引用，以提供更广泛的可维护性衡量标准 - 声明和首次使用之间的跨度可能为 0，但是如果 100 行后再次使用该变量，那仍然很糟糕。
I came across this concept for the first time whilst reading Code Complete 2.
I think the term you're looking for is 'span' in that book, which is explicitly the number of lines between references to a variable. In my interpretation, a variable declared and used on consecutive lines would have a span of 0.
The concept is reusable for other references to the variable too to give a wider measure of maintainability - the span between declaration and first use may be 0, but if the variable is then used again 100 lines later that's still pretty nasty.