From e15b90af9fdf3fea57f33bfcd24df4d3e1ae582d Mon Sep 17 00:00:00 2001
From: Patrick Brosi <info@patrickbrosi.de>
Date: Mon, 7 Feb 2022 09:35:28 +0100
Subject: [PATCH] comment

---
 src/shapevl/Collector.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/shapevl/Collector.cpp b/src/shapevl/Collector.cpp
index 071fed9..f75e940 100644
--- a/src/shapevl/Collector.cpp
+++ b/src/shapevl/Collector.cpp
@@ -394,6 +394,8 @@ std::map<string, double> Collector::getStats() {
 
   if (_distDiffs.size()) {
     auto i = _distDiffs.begin() + _distDiffs.size() / 2;
+
+    // std::nth_element makes a partial sort of the first n elements
     std::nth_element(_distDiffs.begin(), i, _distDiffs.end());
 
     stats["median-dist-diff"] = *i;