Example for on_event

[flying-sheep]

Hi! I’m a Rust noob so forgive me:

If I follow the advice in the example and try to convert to on_event, I end up with something like:

central.start_scan().unwrap();
central.on_event(Box::new(|e: CentralEvent| match e {
    CentralEvent::DeviceDiscovered(addr) => {
        central.peripheral(addr).map(|lamp| {
            lamp.connect().unwrap();
            ...
        });
    },
    _ => {},
}));
// end of main()

Which results in

error[E0597]: `central` does not live long enough
  --> src/main.rs:38:13
   |
36 |       central.on_event(Box::new(|e: CentralEvent| match e {
   |                        -        ----------------- value captured here
   |  ______________________|
   | |
37 | |         CentralEvent::DeviceDiscovered(addr) => {
38 | |             central.peripheral(addr).map(|lamp| {
   | |             ^^^^^^^ borrowed value does not live long enough
39 | |                 lamp.connect().unwrap();
...  |
55 | |         _ => {},
56 | |     }));
   | |______- cast requires that `central` is borrowed for `'static`
57 |   }
   |   - `central` dropped here while still borrowed

How do I correctly box this?