On the hashes part, it's tricky when reading the method itself what the options are. For example, many of the Rails helper methods that take html_options ={} ar

On the hashes part, it's tricky when reading the method itself what the options are. For example, many of the Rails helper methods that take html_options ={} are only documented in one place. So it's cleaner from the side of invoking the method, but relies on the developer of the method to heavily document what the hash's options are. That's the only thing I've noticed.