另一种常见的错误是混淆了前缀和标识符。

Another common mistake is to confuse a prefix with an identifier.

youdao

文件中的所有行都是使用唯一ID标记的，并且所有的行都标有错误消息的标识符和类。

All the lines in the file are tagged with a unique id and all lines are tagged with the identifier and class of the error message.

youdao

将一个以上的对象指定为相同(或没有指定)语言标识符是错误的做法。

It is a usage error to specify more than one object with the same (or missing) language identifier.

youdao

Spelling. These are just dumb little things to look for. Did you spell all the identifiers the way you think you did. The problem is, when you read code you see what you expect to see.

拼写错误，你可能得找找这些粗心的小错误,你是否拼对了标识符,问题是当你阅读代码的时候,你看到的都是你以为的。

麻省理工公开课 - 计算机科学及编程导论课程节选