Avoid copy in features loop

mapbox · May 6, 2016 · e02380a · e02380a
1 parent 7d75833
commit e02380a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/include/supercluster.hpp b/include/supercluster.hpp
@@ -91,7 +91,7 @@ class Supercluster {
 #endif
         // generate a cluster object for each point
         std::size_t i = 0;
-        for (auto f : features) {
+        for (const auto &f : features) {
             const auto &p = f.geometry.get<GeoJSONPoint>();
             Cluster c = { lngX(p.x), latY(p.y), 1, i++ };
             clusters.push_back(c);