我有一个同事，他坚持认为他的代码不需要注释，这是“自文档”。
我已经审阅了他的代码，虽然它比我看到的其他人编写的代码更清晰，但我仍然不同意自文档化代码与经过注释和文档化的代码一样完整和有用。
帮我理解一下他的观点。
什么是自文档代码 它真的能取代注释良好和文档化的代码吗 在某些情况下，它是否比有良好文档和注释的代码更好 是否存在代码不可能在没有注释的情况下自文档化的例子
也许这只是我自身的局限性，但我看不出这怎么能成为一种好的练习。
这并不是一个争论——请不要提出为什么注释良好并有文档记录的代码是高优先级的原因——有很多资源都表明了这一点，但它们对我的同行来说并没有说服力。我认为我需要更全面地了解他的观点，才能说服他。如果你有必要，可以提出一个新的问题，但不要在这里争论。
另外，那些反对自我记录代码的人——这主要是为了帮助我理解自我记录代码传播者的观点(即积极的方面)。
当前回答
我想他可能想说的是，如果注释解释了代码的功能，那么就应该重写，以明确它的意图。这就是他所说的自文档代码。这通常意味着简单地用描述性函数名将长函数分解成逻辑上的小块。
这并不意味着代码不应该被注释。这意味着注释应该提供代码以这种方式编写的原因。
其他回答
This is an excellent question. It traces back to the first programming language that allowed comments, I'm sure. The code certainly should be as self-documenting as possible. Comments that point out the obvious, should be eliminated. Comments that make it easier to understand the intent, purpose, and use of a given method or section of code can be invaluable to those of us dolts that may be less familiar with the language or code in question. Structured comments that allow for the generation of API documentation are a good example. Just don't comment an IF statement that checks to see if a checkbox is checked and tell me that you're checking to see if the checkbox is checked. Restating the obvious in a comment is the worst waste keystrokes in our universe.
//For example, the above text deals with what is a useful comment
I think its a matter of the right amount of documentation, rather than all or none. If the parameters to a function are well named, you often don't have to say exactly what they are, e.g. char *CustomerName is pretty obvious. If you use assert value ranges for parameters, you don't have to document those ranges as well. IMO, documentation should cover everything which is less than obvious and hence needs some explanation, and most code needs some documentation. Personally, I'd rather see an illustrative example of how a given function works than descriptive documentation, in most cases.
为了文档而编写文档可能会浪费时间，因为文档需要维护，以便与代码库保持同步。如果没有人会从阅读中受益，那就不要写。
这里的输入似乎非常复杂:)
我使用伪代码编程过程进行新的开发，这实际上使我的代码自文档化。我只在写新代码时才开始写伪代码，然后在上面扩展。我不是说这是最佳实践或类似的东西，我只是强调一个我认为有用的技巧，如果你知道你的代码需要大量的文档，如果它要交给第三方，审查者等等……它偶尔也会在我还没写一行代码的时候就给我指出一些问题。
' check database is available
' if it is then allow the procedure
' if it isnt roll back and tidy up
' move onto something else
变成了;
' check database is available
if checkDBStateResult(currentDB) = Open then
' if it is then allow the procedure
proc.Ok = True
else
' if it isnt roll back
proc.Ok = False
CleanUp()
end if
我会扭转局面。
问问自己在他的代码中有什么不理解的，然后让他把这些记录下来。也许你也可以告诉我们一些。
在顺序:
Self-documenting code is code that clearly expresses its intent to the reader. Not entirely. Comments are always helpful for commentary on why a particular strategy was chosen. However, comments which explain what a section of code is doing are indicative of code that is insufficiently self-documenting and could use some refactoring.. Comments lie and become out of date. Code always tells is more likely to tell the truth. I've never seen a case where the what of code couldn't be made sufficiently clear without comments; however, like I said earlier, it is sometimes necessary/helpful to include commentary on the why.
然而，需要注意的是，真正的自文档化代码需要大量的自我和团队纪律。您必须学会以声明的方式编程，并且必须非常谦虚，避免使用“聪明”的代码，而应该使用那些似乎任何人都可以编写的代码。
