language-agnostic - 无论使用何种语言，每行代码的错误数量都是恒定的

Question

我听说有人说(虽然我不记得具体是谁)，无论使用什么语言，每行代码的错误数量大致恒定。支持这一点的研究是什么？

编辑添加 :我无权访问它，但显然是 this paper 的作者
“询问了用不同编程语言编写的程序每行代码 (LOC) 的错误数量是否相同的问题。”

Answer 1

在他的书中Code Complete (引自第 2 版)，在“开发人员测试”一章中，Steve McConnell 引用了一些跨多种语言的研究:

• Industry average experience is about 1-25 errors per 1000 lines of code for delivered software. The software has usually been developed using a hodgepodge of techniques (Boehm 1981, Gremillion 1984, Yourdon 1989a, Jones 1998, Jones 2000, Weber 2003). Cases that have one-tenth as many errors as this are rare; cases that have 10 times more tend not to be reported. (They probably aren't ever completed!)

• The Applications Division at Microsoft experiences about 10–20 defects per 1000 lines of code during in-house testing and 0.5 defects per 1000 lines of code in released product (Moore 1992). The technique used to achieve this level is a combination of the code-reading techniques described in Other Kinds of Collaborative Development Practices, and independent testing.

• Harlan Mills pioneered "cleanroom development," a technique that has been able to achieve rates as low as 3 defects per 1000 lines of code during in-house testing and 0.1 defects per 1000 lines of code in released product (Cobb and Mills 1990).

这些研究的范围从 Java 等高级语言，到 C++ 和 C，一直到汇编。考虑到 Code Complete 作为一门学科对软件工程的巨大影响，我怀疑它负责普及这个想法。