The title should be "Useful Swift Things". I assumed it would be about useful tips and tricks about using iOS on an iPhone.

I'd like to know what sort of "tips and tricks" you expected to be hosted inside of a Github repository.

Have you not come across any of the awesome-* repos?

I personally thought it was one of them but for iOS

e.g. https://github.com/awesome-selfhosted/awesome-selfhosted