Code reviewHardcr-g377

Subject Use after freeLevel Senior–Staff~26 minCommon in Code quality & review interviewsIndustries Software development

Question

Review this Rust event registration. `Widget` registers a callback that reads its own `label`.

What a strong answer looks like

Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix — specific and kind.

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Code to reviewrust

1struct Widget { label: String }2 3impl Widget {4    fn register(&self, bus: &mut EventBus) {5        bus.on_click(Box::new(|| {6            println!("clicked {}", self.label); // borrows self7        }));8    }9}10// bus: on_click(&mut self, cb: Box<dyn Fn() + 'static>)

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