Your best bet is taking inspiration from various Elixir projects using it, sadly.

In the last few months work on Rustler seems to have resumed so I hope we can expect a stable 0.22 version before the end of the year. This is important because 0.21 had pretty verbosive syntax requirements for the glue code and 0.22-rc introduced a much shorter and readable one.

This GitHub search can help send you in the right direction, hopefully.

EDIT: Interestingly enough (and I stand corrected), Rustler has a 0.22.0 GIT tag (and no GitHub release but that seems irrelevant?). But it does look like Rustler 0.22 is actually official, judging by its hex.pm page.

I was able to find this Medium article on getting started with Rustler.

Besides this, I do know that the maintainers are working on an improved page with more general guides next to the already-existing Elixir- and Rust module documentation pages. However, that seems to still be a ways off, unfortunately.

If you have any concrete questions, I’m sure we’ll be able to help you along here at the Elixir Forum. I’ve gone through the rodeo of making a NIF a couple of times now, and there are others who regularly use Rustler as well, so ask any questions you might have .

Check out this JSON library: rjs/lib.rs at master · yjh0502/rjs · GitHub