An accompanying repository to this blog post.
This is of course an extremely oversimplified example created for educational purposes, but still a valid one since adding any number of ports, adapters or use cases will follow basically the same pattern. Restructuring / refactoring the project in any way will not affect the responsibilities of it's components etc...
The bottom line is that you need too know your hexagon and everything else will come.
NOTE: Read the comments in the files.