async-trait VS rust-quiz

As of today, async functions in traits are not natively supported by Rust. Fortunately, David Tolnay got our back covered (one more time): we can use the async-trait crate.

You might want to check out https://github.com/dtolnay/async-trait to be able to declare async functions in a trait.

Also async-trait (GitHub), dtolnay has done some great work!

Does async-trait count as a trick or hack? It's not my hack, but it's a workaround/hack that I use every single day.

This macro goes a very long way toward solving the problem: https://github.com/dtolnay/async-trait

I'm still learning async to I cannot answer all the questions. First of all, I use this -> https://github.com/dtolnay/async-trait to take care of the async-inside-traits mess.

If you didn't like these because they're "trick" questions you likely also would not enjoy CppQuiz (https://cppquiz.org/)

However you might well enjoy https://dtolnay.github.io/rust-quiz/

Like the C++ quiz, "Undefined Behaviour" is a valid answer, however, the quiz questions are about safe Rust, so that answer is always wrong.

I still get more than half of them wrong unless given far too long to think about it.

Cool, but I feel like the current questions are super basic. Something you're able to answer after reading the book and toying with Rust on a weekend. Definitely needs some harder questions, maybe feel inspired by https://dtolnay.github.io/rust-quiz/?

> If we accept that Rust is indeed more difficult to learn than comparable systems programming languages

My problem is with "comparable systems programming languages". To me the only thing that fits there today is C++ and while a great many programming languages would be easier to learn than Rust, C++ is not one of them by a long shot.

I think the C++ Quiz https://cppquiz.org/ and the Rust Quiz https://dtolnay.github.io/rust-quiz/ illustrate handily. Neither of these languages is a walk in the park, but, notice they both have "Undefined behaviour" as a possible answer? Safe Rust doesn't actually have undefined behaviour, so you get to rule out one of the possibilities any time you don't see the "unsafe" keyword, which is in fact every time on the Rust Quiz. In C++ some of the quiz questions invoke UB, but good luck correctly guessing which ones.

Do you actually want to question all you know about Rust? Do this amazing quiz by the famed dtolnay.

If you want a correct and much harder Rust quiz, here you go.

⭐ Rust Quiz - David Tolnay

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/

Obligatory: https://dtolnay.github.io/rust-quiz/

There is also this quiz