Trait Observer 

pub trait Observer: Send {
    // Provided methods
    fn progress(&mut self, _progress: &Progress) { ... }
    fn diagnostic(&mut self, _diagnostic: &Diagnostic) { ... }
}

Receives a run’s events on the run’s thread. Both methods default to doing nothing.

Provided Methods

fn progress(&mut self, _progress: &Progress)

fn diagnostic(&mut self, _diagnostic: &Diagnostic)

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl Observer for ()

No events.

Implementors

impl<F: FnMut(&Progress) + Send> Observer for F

A closure observes progress only.