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protected

The protected keyword is an inheritance-aware visibility modifier. A protected member is visible inside the declaring type and within its subtypes, but not to unrelated external code.

Syntax & Example​

class Base {
    protected fn hook() {
        print("base hook");
    }
}

class Derived extends Base {
    pub fn run() {
        self.hook(); // visible to subtypes
    }
}

Use Cases​

  • Sharing members with subclasses while keeping them from general callers.
  • Providing overridable extension points for derived types.

See also: private, public.