None working attempt at using cxx.

src/test.cpp

@@ -4,10 +4,15 @@
 
 int main(int argc, char *argv[])
 {
-    double result = add(1.0, 2.0);
-    std::cout << result << std::endl;
+    const auto my_string = OptionalString::some(rust::String("test"));
+    if(my_string->is_some())
+    {
+        auto as_string = my_string->value();
+        std::cout << as_string.c_str() << std::endl;
+    }
+
+    auto my_map = StringMap::build();
+    my_map->insert(rust::String("a"), rust::String("b"));
 
-    const auto my_struct = MyStruct_build(3.0, 4.0);
-    std::cout << my_struct->sum() << std::endl;
     return 0;
 }