From b89f989055e52e2d9fe88923acbc8fd5f0019e4f Mon Sep 17 00:00:00 2001
From: Monty Taylor <mordred@inaugust.com>
Date: Sat, 9 Feb 2019 21:51:43 +0000
Subject: [PATCH] Pass input string by const reference

We're not mutating the string, so it can be const. And we can pass
by reference instead of by value to avoid the copy.
---
 zuul-preview/main.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/zuul-preview/main.cc b/zuul-preview/main.cc
index 908da95..fb497bf 100644
--- a/zuul-preview/main.cc
+++ b/zuul-preview/main.cc
@@ -23,7 +23,7 @@
 
 using namespace std;
 
-vector<string> split(string in)
+vector<string> split(const string &in)
 {
   istringstream stream(in);
   vector<string> parts;