It's worth noting that Conrod doesn't use any unsafe code [1]. In light of the "Why I'm dropping Rust" post, it's nice to see a proof point that it's possible,

It's worth noting that Conrod doesn't use any unsafe code [1]. In light of the "Why I'm dropping Rust" post, it's nice to see a proof point that it's possible, and easy, to write heterogeneous trees in Rust without using unsafe code. It looks like Conrod uses petgraph via the daggy crate [2]. [1]: https://github.com/PistonDevelopers/conrod/search?utf8=%E2%9C%93&q=unsafe https://github.com/PistonDevelopers/conrod/search?utf8=%E2%9... [2]: https://github.com/mitchmindtree/daggy https://github.com/mitchmindtree/daggy