Variance in Rust

I recently presented a slideshow on the subject of "Variance in Rust: Covariant, Contravariant, and Invariant".  My thanks to Cameron Dershem, the Organizer of the Indy Rust Meetup, for inviting me to speak to the group.  This was an updated version of the talk that I gave to Dallas Rust User Meetup (DRUM) a few weeks before.

In my talk, I introduced the terminology and showed some basic code examples.  An ending slide includes links to where I learned about this topic so that interested Rustaceans can dig in deeper.  You can download the presentation slides in PDF format from my Rust and WebAssembly research page.