Code RoomClosure lifetime exceeds borrowed self

HardPrep Room Coding #2005

Closure lifetime exceeds borrowed self

Code reviewCode quality & reviewSenior–Staff~26 min

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

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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.

0:00 of about 26 min

Mark a line and say what kind of problem it is.0 findings

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 self

7 }));

8 }

9}

10// bus: on_click(&mut self, cb: Box<dyn Fn() + 'static>)

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