add counter

bin/main.cpp

@@ -41,6 +41,13 @@ struct ForTypeTrace
   int a;
 };
 
+struct counter_test : public hack::utils::counter<int>
+{
+  counter_test() : id { ++hack::utils::counter<int>::id } { }
+  int id;
+
+};
+
 int main(int argc, char *argv[])
 {
   {// ex: string::split_str
@@ -218,4 +225,9 @@ int main(int argc, char *argv[])
     hack::log()(hack::security::is_string<decltype ('c')>::value);
     hack::log()(hack::security::is_string<decltype ("c")>::value);
   }
+
+  {
+    counter_test a, b, c;
+    hack::log()(c.id);
+  }
 }

src/utils/utils.hpp

@@ -62,4 +62,10 @@ namespace hack::utils
 
     return result;
   }
+
+  template<typename T, T value = 0>
+  struct counter 
+  {
+    inline static T id = value;
+  };
 }