diff --git a/include/tl/only_in_debug.h b/include/tl/only_in_debug.h
new file mode 100644
index 0000000..6699e34
--- /dev/null
+++ b/include/tl/only_in_debug.h
@@ -0,0 +1,7 @@
+#pragma once
+
+#ifdef _DEBUG
+#define TL_ONLY_IN_DEBUG(...) __VA_ARGS__
+#else
+#define TL_ONLY_IN_DEBUG(...)
+#endif