The Result type [https://doc.rust-lang.org/std/io/type.Result.html] in rust is
great! Combined with the ? operator
[https://doc.rust-lang.org/edition-guide/rust-2018/error-handling-and-panics/the-question-mark-operator-for-easier-error-handling.html]
, it makes error handling much more concise than other languages. Consider ? vs:
* Go: if err != nil { return nil, err }
* Java:try
