From 978b70c9986b466408537ae78854348c4994acb0 Mon Sep 17 00:00:00 2001
From: "Daniel J. Hofmann" <daniel@trvx.org>
Date: Thu, 28 Jan 2016 16:57:05 +0100
Subject: [PATCH] Adds a comment as to why the char to typed enum class
 transformation is not possible

---
 include/extractor/travel_mode.hpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/extractor/travel_mode.hpp b/include/extractor/travel_mode.hpp
index 1de8c2266..af16bcaee 100644
--- a/include/extractor/travel_mode.hpp
+++ b/include/extractor/travel_mode.hpp
@@ -6,6 +6,8 @@ namespace osrm
 namespace extractor
 {
 
+// This is a char instead of a typed enum, so that we can
+// pack it into e.g. a "TravelMode mode : 4" packed bitfield
 using TravelMode = unsigned char;
 }
 }