This error happens when you are migrating your code from Xcode 9 to Xcode 10+. It due to any class name is conflicting with existing apple ... ... <看更多>

I'm trying to get the output, but this is only returned when the process returns a 0 status code. It could be a handy property on the non zero ... ... <看更多>

Unix-like systems have a strong convention that an exit status of 0 denotes success, and any non-zero exit status denotes failure. Some, but not all, programs ... ... <看更多>

... <看更多>