diff --git a/source/util.cc b/source/util.cc
index 18b5446..ed9a3ce 100644
--- a/source/util.cc
+++ b/source/util.cc
@@ -1,6 +1,5 @@
 #include "util.h"
 
-
 array<vector<string>, 5> read_csv(const string& filename) {
     array<vector<string>, 5> array_vectors;
     vector<string> vec_option;
diff --git a/source/util.h b/source/util.h
index 23b89fb..54b56fd 100644
--- a/source/util.h
+++ b/source/util.h
@@ -11,6 +11,11 @@
 
 using namespace std;
 
+template<typename Type>
+    struct Result{
+        Type response;
+        int error;
+};
 
 struct Passwd {
     string user;