I can't think of a good one. Graph-like data structures is a common example of something that's a bit difficult in Rust - see https://stackoverflow.com/question

I can't think of a good one. Graph-like data structures is a common example of something that's a bit difficult in Rust - see https://stackoverflow.com/questions/34747464/implement-graph-like-data-structure-in-rust https://stackoverflow.com/questions/34747464/implement-graph.... But the answers there seem reasonable and I'm not a Rust expert. I guess my point is that nobody would even need to ask this question if the implementation was in C.