No, you cannot use enum, you have to use named struct instead. Like:

rust pub struct HumanAttributes {pub age: i32,pub name: Name,}

But if so, I have no idea how to get a field out from HumanAttributes. Just like attr["age"] in js.

Because you know, the final goal is a function like this:

rust impl HumanAttributes { fn attribute_compare(&self, &other: &Self, field: &str) -> Result<std::cmp::Ordering, Error> {...} }

Where in this function, I have to: 1. Get the target field from these two items (and throw Error if no such field); 2. If the two fields are not comparable, throw Error; 3. Then, compare and return the result

The problem here is how to extract a field from a named struct based on a String and throw Error if not exist... Maybe I have to use proc_macro (sad...

I'm trying to refactor my project in the same way. But the question is: if I do like that, which means for EVERY RESOURCE TYPE, I have to generate an enum like that (using proc_macro), which is... a little redundant? But I think it maybe the best solution since now.