A thin abstraction over polymorphic environments for Rust.

I’ve recently put together a rather small Rust crate haz meant to support passing a subset of data around while satisfying the following requirements:

  • not commit to a particular representation,
  • not yield access to more information than what called functions need,
  • not require to pass each field explicitly at call-site.

Essentially, the library reduces to the Has<Component> trait:

trait Has<Component> {
    fn access(&self) -> &Component;
}

Whereby implementing Has<Component> for Container we state that Container can lend read-only access to Component.

Moreover, there’s a macro to ease implementation and a few helper functions offering different syntax styles for usage.

I’m yet to decide whether that’s an idea which I should further pursue. Nevertheless, the code is openly available should you want to give it a go.

Please check out the documentation at github or crates.io for more information.

I’ll forward to your feedback!