diff --git a/.gitignore b/.gitignore
index 48d1285..4b06a99 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 .idea/
+*.orig
 *.toml
 boost_*
 Resources
diff --git a/include/Defer.h b/include/Defer.h
new file mode 100644
index 0000000..c037cac
--- /dev/null
+++ b/include/Defer.h
@@ -0,0 +1,18 @@
+#pragma once
+
+#include <functional>
+
+template <typename FnT>
+class Defer final {
+public:
+    Defer(FnT fn)
+        : mFunction([&fn] { (void)fn(); }) { }
+    ~Defer() {
+        if (mFunction) {
+            mFunction();
+        }
+    }
+
+private:
+    std::function<void()> mFunction;
+};