Question

How to create a thread in Rust

Answer 1

use std::thread;
use std::time::Duration;

fn main() {
   thread::spawn(|| {
      for i in 1..10 {
         println!("number {} - thread::spawn 1..10", i);
         thread::sleep(Duration::from_millis(1));
      }
   });
   for i in 1..5 {
      println!("number {} 1..5", i);
      thread::sleep(Duration::from_millis(2));
   }
}




/*
run:

number 1 1..5
number 1 - thread::spawn 1..10
number 2 - thread::spawn 1..10
number 2 1..5
number 3 - thread::spawn 1..10
number 4 - thread::spawn 1..10
number 3 1..5
number 5 - thread::spawn 1..10
number 6 - thread::spawn 1..10
number 4 1..5
number 7 - thread::spawn 1..10
number 8 - thread::spawn 1..10

*/

 

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Answer 2

use std::thread;
use std::time::Duration;

fn main() {
    let handle = thread::spawn(|| {
      for i in 1..10 {
         println!("number {} - thread::spawn 1..10", i);
         thread::sleep(Duration::from_millis(1));
      }
    });
    
    for i in 1..5 {
      println!("number {} 1..5", i);
      thread::sleep(Duration::from_millis(2));
    }
   
    handle.join().unwrap();
}




/*
run:

number 1 1..5
number 1 - thread::spawn 1..10
number 2 - thread::spawn 1..10
number 2 1..5
number 3 - thread::spawn 1..10
number 4 - thread::spawn 1..10
number 3 1..5
number 5 - thread::spawn 1..10
number 6 - thread::spawn 1..10
number 4 1..5
number 7 - thread::spawn 1..10
number 8 - thread::spawn 1..10
number 9 - thread::spawn 1..10

*/

 

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