From 45574e53aec7c9e4b40bb5254039d43539051aa2 Mon Sep 17 00:00:00 2001
From: Henry Zimmerman <hgzimmerman@users.noreply.github.com>
Date: Wed, 4 Dec 2019 16:00:37 -0500
Subject: [PATCH] improve speed of to_string for Classes (#772)

---
 src/virtual_dom/mod.rs | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/src/virtual_dom/mod.rs b/src/virtual_dom/mod.rs
index 81aaa8f0c..bb31fd3ed 100644
--- a/src/virtual_dom/mod.rs
+++ b/src/virtual_dom/mod.rs
@@ -84,13 +84,11 @@ impl Classes {
 
 impl ToString for Classes {
     fn to_string(&self) -> String {
-        let mut buf = String::new();
-        for class in &self.set {
-            buf.push_str(class);
-            buf.push(' ');
-        }
-        buf.pop();
-        buf
+        self.set
+            .iter()
+            .map(String::as_str)
+            .collect::<Vec<&str>>()
+            .join(" ")
     }
 }