Some websites that I love to visit.
(A Few) Advanced Variable Types in Rust
For Rust has a variety of variable types, everything can easily mixed up in my head for when to use RefCell, Rc, Arc, and so forth. When that happens, I always visit page to remember what each means, and it's been helping me whole a lot.
Wrapper Types in Rust: Choosing Your Guarantees
Another webpage that I always look up for various Rust variable types.