Add a missing include

2017-05-28 00:53:33 -07:00
parent a79e8f3d95
commit 07bb5f1322
1 changed files with 1 additions and 0 deletions
@@ -5,6 +5,7 @@
 */

 #include <condition_variable>
+#include <functional>
 #include <algorithm>
 #include <iostream>
 #include <iomanip>