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So I dragged a few files into a new Xcode project and notice that the files I dragged in had little 'A's next to them. Does anybody know what this means?
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Those letters beside files in the Project Navigator of Xcode show the status of files that are under version control systems, such as SVN or Git. So, for instance: M - means the file has changed and it should be merged into SCM. A - means this is a new file and should be added to SCM.
The main function in main. m calls the UIApplicationMain function within an autorelease pool.
It means they are not found on disk where your project believes they should be. Control-click and Show In Finder to see the folder location to locate the file and drag it back in to the project, and delete the bad reference.
Press and hold the ⌘ + shift and . keys at the same time. Then you can switch to view hidden/non-hidden files. Save this answer.
That is the SCM (git, SVN, etc.) status of the file. 'A' stands for Added, 'M' stands for Modified, and '?' stands for Unknown (i.e. untracked file).
Xcode 4 creates a git repo for new projects by default. You can disable this on the New Project dialog if you wish.
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