Rust Result Error Handling. In languages like Java JS Python etc you usually throw exceptions and return successful values. The unwrap method abstracts away the case analysisThis is precisely the thing that makes unwrap ergonomic to use.
If it is an Err no further elements are taken and the Err is returned. In them so its. One of them is a nice error-handling exception-like system.
Pub enum Result T E Ok T Err E This use lets us write OkHappy instead of ResultOkHappy as we need to do with other enums by default.
Error handling in Rust can be clumsy if you cant use the question-mark operator. Pub use Result Ok Err. In languages like Java JS Python etc you usually throw exceptions and return successful values. Should no Err occur the sum of all elements is returned.