我正在使用Xcode 4.2，其中我创建了各种类，这些类显示了各种符号，如？，A，M和类的名称。项目运行得非常好。我仍然很想知道这些符号的含义。具有问号符号的类是否会在将来产生错误或警告？
答案 0 :(得分：20)
经过大量搜索后，我在“跟踪您的文件的SCM状态”部分下的this链接获得了答案。
M = Locally modified
U = Updated in repository
A = Locally added
D = Locally deleted
I = Ignored
R = Replaced in the repository
– = The contents of the folder have mixed status; display the contents to see individual status
? = Not under source control