display time take

src/main.rs

@@ -13,12 +13,16 @@ mod prelude {
 
 use prelude::*;
 use clap::Parser;
+use std::time::Instant;
 
 #[derive(Parser, Debug)]
 struct Args {
     /// Number of threads
     #[clap(short, long, default_value_t = 1)]
     threads: usize,
+    /// Display stats after each propagation
+    #[clap(short, long)]
+    display: bool,
 }
 
 fn main() {
@@ -37,18 +41,21 @@ fn main() {
     let mut stats: [i32; 4];
     // = [0,0,0,0];
     let mut counter: u32 = 0;
+    let now = Instant::now();
     loop {
         counter += 1;
         stats = population.propagate_new(Some(args.threads));
         //population.display();
-        println!(
+        if args.display {
-            "Normal: {} Infecteds: {} Immunes: {} Deads: {}",
+            println!(
-            stats[0], stats[1], stats[2], stats[3]
+                "Normal: {} Infecteds: {} Immunes: {} Deads: {}",
-        );
+                stats[0], stats[1], stats[2], stats[3]
+            );
+        }
         if stats[1] == 0 {
             break;
         }
     }
-    println!("Propagation finished in {} steps", counter);
+    println!("Propagation finished in {} steps, {:?}", counter, now.elapsed());
     //population.display();
 }