Instead of verbose conditional logic, prefer Rust's Option combinators like `map`, `and_then`, and `filter` for handling potentially null values. This creates more concise, readable code that expresses intent clearly and reduces the chance of null-related bugs. For example, replace: ```rust let result = if let Some(value) = optional_value { Some(process(value)) } else { None }; ``` With: ```rust let result = optional_value.map(process); ``` Similarly, when handling multiple optional values, use `and_then` instead of nested if-lets: ```rust // Instead of this let session_cookie = if let Ok(TypedHeader(cookie)) = TypedHeader::::from_request(req).await { cookie.get(AXUM_SESSION_COOKIE_NAME).map(|x| x.to_owned()) } else { None }; // Prefer this let session_cookie = Option::>::from_request(req).await .and_then(|cookie| Some(cookie.get(AXUM_SESSION_COOKIE_NAME)?.to_owned())); ``` When validating values that might fail, explicitly set to None on failure: ```rust self.filename = if let Ok(filename) = value.try_into() { Some(filename) } else { trace!("Attachment filename contains invalid characters"); None }; ``` Using Option combinators not only makes code more concise but also makes the intent clearer and reduces the chance of null-handling mistakes.