From e5b5df1261dd30dab2d2f55aeb253b2f751f5fb6 Mon Sep 17 00:00:00 2001
From: zero-systems <60021149+zero-systems@users.noreply.github.com>
Date: Wed, 22 Jan 2020 07:35:22 +1000
Subject: [PATCH] Optimize vector fill in builder. (#89)

* optimize vector fill
---
 actix-server/src/builder.rs | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/actix-server/src/builder.rs b/actix-server/src/builder.rs
index df733759..0f3722c9 100644
--- a/actix-server/src/builder.rs
+++ b/actix-server/src/builder.rs
@@ -263,12 +263,14 @@ impl ServerBuilder {
             info!("Starting {} workers", self.threads);
 
             // start workers
-            let mut workers = Vec::new();
-            for idx in 0..self.threads {
-                let worker = self.start_worker(idx, self.accept.get_notify());
-                workers.push(worker.clone());
-                self.workers.push((idx, worker));
-            }
+            let workers = (0..self.threads)
+                .map(|idx| {
+                    let worker = self.start_worker(idx, self.accept.get_notify());
+                    self.workers.push((idx, worker.clone()));
+
+                    worker
+                })
+                .collect();
 
             // start accept thread
             for sock in &self.sockets {
@@ -380,7 +382,7 @@ impl ServerBuilder {
                                             .await;
                                             System::current().stop();
                                         }
-                                        .boxed(),
+                                            .boxed(),
                                     );
                                 }
                                 ready(())