manual-unwrap-or-default

Prefer unwrapOrDefault over equivalent Result pattern matching

Branching on a Result to select its successful payload or the payload type's default manually unwraps the Result.
Instead, you SHOULD use unwrapOrDefault to state the defaulting operation directly.

- Category: style
- Level: warning
- Fix: automatic
- Scope: module

Reported

function value<T: Default>(result: Result<T, string>): T {
    return match (result) {
        Ok { value } => value
        Err { error: _ } => T.default()
    };
}
Accepted

function value<T: Default>(result: Result<T, string>): T {
    return result.unwrapOrDefault();
}
Prior art

- Clippy · manualunwrapordefault

language/linter/src/rules/style/manualunwrapordefault.rs:8