Allow ranges of values, not just references

1 files changed, 4 insertions, 4 deletions

diff --git a/geom_matching/wasserstein/include/wasserstein.h b/geom_matching/wasserstein/include/wasserstein.h
index d8d6b2e..5be7691 100644
--- a/geom_matching/wasserstein/include/wasserstein.h
+++ b/geom_matching/wasserstein/include/wasserstein.h
@@ -106,11 +106,11 @@ namespace ws
 
         std::map<PointType, int> m1, m2;
 
-        for(const auto& pair1 : dgm1) {
+        for(auto&& pair1 : dgm1) {
             m1[pair1]++;
         }
 
-        for(const auto& pair2 : dgm2) {
+        for(auto&& pair2 : dgm2) {
             m2[pair2]++;
         }
 
@@ -296,7 +296,7 @@ wasserstein_cost(const PairContainer& A,
     std::vector<RealType> x_plus_B, x_minus_B, y_plus_B, y_minus_B;
     // loop over A, add projections of A-points to corresponding positions
     // in B-vector
-    for(auto& pair_A : A) {
+    for(auto&& pair_A : A) {
         a_empty = false;
         RealType x = Traits::get_x(pair_A);
         RealType y = Traits::get_y(pair_A);
@@ -315,7 +315,7 @@ wasserstein_cost(const PairContainer& A,
         }
     }
     // the same for B
-    for(auto& pair_B : B) {
+    for(auto&& pair_B : B) {
         b_empty = false;
         RealType x = Traits::get_x(pair_B);
         RealType y = Traits::get_y(pair_B);