Set global state from router on_update

[wackazong]

How can I set a global state variable (using consume_context::<Signal<T>>()) in the router update callback? The update callback function is only Fn unfortunately, not FnMut.

[ealmloff]

Most methods to write to signals require &mut self to avoid overlapping reads and writes to the same signal, but you can opt-out of the extra checks with write_unchecked. If you only use that method inside the update function instead of write, it will implement Fn

[wackazong]

Ok, great, will do that.