Extending thread implementation to get unique identifier directly

thread_number.rs

use std::thread;
use std::thread::JoinHandle;
use std::thread::ThreadId;

fn main() {
      let handle = thread::spawn(||{
        println!("Spawned thread {:?}",thread::current().id());});

      let handle2 = thread::spawn(||{
          println!("Spawned thread2 {:?}",thread::current().id());
      });
      trait ThreadCount {
          fn count(self) -> ThreadId;
      }

      impl<T> ThreadCount for JoinHandle<T> {
          fn count(self) -> ThreadId {
              self.thread().id()
          }
      }
  //Here instead getting thread count by handle.thread().id(), we do it with simply handle2.count()
    println!("handle {:?} {:?}",handle.thread().id(),handle2.count());
}