I recently updated to XCode7. And just noticed this new file
ObjectiveC.gcno in my project’s root. My go-to source for gitignore files doesn’t have it ignored. https://github.com/github/gitignore
It seems to be some sort of build artifact, but not sure. Should it be ignored??
My project has both Objective-C and Swift code together.
.GCNO files are files which are generated by Xcode in order to manage code coverage information.
You can read about it here in the Apple docs: Apple Documentation.
There is no problem to either ignore them or push them to your repository.