Hello,
The filenames in the C++ source tree are a bit ad hoc and inconsistent. Sometimes they use hyphens for word separation, sometimes underscores. In ARROW-4648 it was proposed that we unify C++ file naming, therefore there are two possible options: only hyphens, or only underscores. What are your preferences? Personally, I have a slight preference for hyphens, especially as they are already used in binary names. Regards Antoine.
