Try Result + combinators + ? operator. https://learning-rust.github.io/docs/e6.combinators.html https://learning-rust.github.io/docs/e6.combinators.html https

Try Result + combinators + ? operator. https://learning-rust.github.io/docs/e6.combinators.html https://learning-rust.github.io/docs/e6.combinators.html https://learning-rust.github.io/docs/e5.error_and_none_propagation.html https://learning-rust.github.io/docs/e5.error_and_none_propa...