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The best way to start is probably Rust By Example https://doc.rust-lang.org/stable/rust-by-example/ and Rustlings https://github.com/rust-lang/rustlings/ . The key is to do the exercises "the hard way" and get some familiarity with the mechanics of coding in Rust. Once you've done that, reading TRPL will make a lot more sense.
The best way to start is probably Rust By Example https://doc.rust-lang.org/stable/rust-by-example/ and Rustlings https://github.com/rust-lang/rustlings/ . The key is to do the exercises "the hard way" and get some familiarity with the mechanics of coding in Rust. Once you've done that, reading TRPL will make a lot more sense.
One surprise perhaps is that both Python and C++ have multiple inheritance whereas Rust doesn't have implementation inheritance at all (Rust's traits can inherit but data structures and implementations cannot).
Both C++ and Rust have similar Quiz sites:
https://dtolnay.github.io/rust-quiz/
dead_code is required because Rust compiles each integration test as a separate crate. This causes spurious warnings to be emitted if you want to share code between tests. See https://github.com/rust-lang/rust/issues/46379
Modules and crates continues to be one of the most confusing aspects of Rust, for me at least.
This kind of already exists in the form of #[no_panic] [1]?
> If the function does panic (or the compiler fails to prove that the function cannot panic), the program fails to compile with a linker error that identifies the function name.
1: https://github.com/dtolnay/no-panic
