From c836e97de7da9ba0a85ff45fe15db5779bee1afb Mon Sep 17 00:00:00 2001
From: Dominic Hamon <dominic@google.com>
Date: Mon, 29 Jan 2018 08:26:59 -0800
Subject: [PATCH] Some small clang-tidy fixes

---
 src/statistics.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/statistics.cc b/src/statistics.cc
index 5932ad438..d2843679d 100644
--- a/src/statistics.cc
+++ b/src/statistics.cc
@@ -30,7 +30,7 @@ auto StatisticsSum = [](const std::vector<double>& v) {
 };
 
 double StatisticsMean(const std::vector<double>& v) {
-  if (v.size() == 0) return 0.0;
+  if (v.empty()) return 0.0;
   return StatisticsSum(v) * (1.0 / v.size());
 }
 
@@ -62,7 +62,7 @@ auto Sqrt = [](const double dat) {
 
 double StatisticsStdDev(const std::vector<double>& v) {
   const auto mean = StatisticsMean(v);
-  if (v.size() == 0) return mean;
+  if (v.empty()) return mean;
 
   // Sample standard deviation is undefined for n = 1
   if (v.size() == 1)