diff --git a/includes/libstd/mem.pat b/includes/libstd/mem.pat
new file mode 100644
index 0000000..2c729a9
--- /dev/null
+++ b/includes/libstd/mem.pat
@@ -0,0 +1,7 @@
+namespace std::mem {
+  
+    fn eof() {
+        return $ >= std::mem::size();
+    };
+  
+}