Trait Subscriptor
blackboard
pub trait Subscriptor<T> { pub fn notify(&mut self, what: &mut T); }
To be implemented by subscriptors, any FnMut(&mut T) closure automatically implements this
pub fn notify(&mut self, what: &mut T)
impl<T, F> Subscriptor<T> for F where F: FnMut(&mut T),
Notifies the Subscriptor with a type