我正在对初级(也许是高级)软件工程师所犯的常见错误和错误假设进行一些研究。

你坚持时间最长、最终被纠正的假设是什么?

例如,我误解了整数的大小不是标准的,而是取决于语言和目标。说起来有点尴尬,但事实就是这样。

坦率地说;你有什么坚定的信念?你大概坚持了多长时间?它可以是关于一种算法、一种语言、一个编程概念、测试,或者任何关于编程、编程语言或计算机科学的东西。


当前回答

您无法诊断生产中的“间歇性错误”。重新启动服务器是解决这个问题的唯一方法。

也许在我早期的ASP编码中更真实。但是有很多很好的分析工具可以发现内存泄漏和其他奇怪的问题。Perfmon还提供了许多良好的诊断数据。另外,您应该在应用程序中编写诊断日志。

其他回答

以前从未见过整数提升… 并认为'z'在这段代码中可以容纳255:

unsigned char x = 1;
unsigned char y = 2;
unsigned char z = abs(x - y);

z的正确值是1

我曾经认为我永远不会像微软开发人员那样编程,但现在我认为我可以写同样干净的代码,甚至更好。

XML名称空间(或者更糟,格式良好)在某种程度上比没有它们要困难得多。

一个非常常见的错误,甚至在W3C!

我仍然对以下的一些误解感到困扰——尽管我知道这些误解是正确的,但我仍然试图抓住它们不放:

All stakeholders will make decisions about software design objectively. Those that aren't embroiled in writing the code make all sorts of decisions based entirely on emotion that don't always make sense to us developers. Project budgets always make sense - I've seen companies that are quite happy to drop [just for example] $50,000 a month for years rather than pay $250,000 to have a project completed in 6 months. The government for one loses their annual budget if they don't spend it - so spend it they will, come hell or high water. It astounds me at how many project dollars are wasted on things like this. You should always use the right tools for the right job - sometimes this decision is not in your hands. Sometimes it comes down from on high that "thou shalt use X technology" for this project, leaving you thinking "WTF! Who came up with that ridiculous idea?"... the guy paying your paycheque, that's who, now get it done. Programming ideology comes first and foremost, everything else is secondary. In reality, deadlines and business objectives need to be met in order to get your paycheque. Sometimes you make the worst decisions because you just don't have time to do it the right way... just as sometimes that word is on the tip of your tongue but the minute it takes to recall it makes you choose a different and less ideal word. There isn't always time to do it right, sometimes there is only time to do it - however that may be. Hence oft' seen anti-patterns used by so called experienced developers who have to knock out a solution to a problem 10 minutes before the presentation deadline for the software being delivered to your best client tomorrow.

如果每一行都计算条件,如果你写这样的代码:

Dim a as Boolean = True
If a Then
    Console.WriteLine("1")
    a = False
    Console.WriteLine("2")
Else
    Console.WriteLine("3")
End If

那么输出将是:

1
3