Function init_with_listener 

pub fn init_with_listener(listener: Box<dyn LogListener>)

Initializes the logging system with a listener. Note that the init! macro is the preferred method to do this in the public API.

use breadcrumbs::{init_with_listener, LogListener};
struct MyLogListener;
 
impl LogListener for MyLogListener {
   fn on_log(&mut self, log: breadcrumbs::Log) {
      println!("{}", log);
  }
}
 
init_with_listener(Box::new(MyLogListener));