Add missing optional

ds4dm · May 9, 2022 · 7472a00 · 7472a00
1 parent cef7794
commit 7472a00
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/libecole/include/ecole/dynamics/branching.hpp b/libecole/include/ecole/dynamics/branching.hpp
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <cstddef>
+#include <optional>
 
 #include <xtensor/xtensor.hpp>