Add pragma once

tylerkaraszewski · tylerkaraszewski · commit 2d9a0df95bb9 · 2020-09-30T08:49:45.000-07:00
diff --git a/SynchronizedMap.h b/SynchronizedMap.h
@@ -1,5 +1,6 @@
 // This is a class that's just a std::map that's thread-safe. It does not implement every std::map function, please add
 // them as needed.
+#pragma once
 template <typename T, typename U>
 class SynchronizedMap {
   public:
