I've used uthash in the past for a similar hash implementation. It certainly has its wrinkles, i.e. you may need to include several if you want to include an o

I've used uthash in the past for a similar hash implementation. It certainly has its wrinkles, i.e. you may need to include several if you want to include an object in multiple hashes... but it was fun to use and straightforward! https://troydhanson.github.io/uthash/ https://troydhanson.github.io/uthash/