Retrieve varidic values from a query

[gtnardy]

Hello there @znone!

Is there a way to retrieve variadic values from a query, like in a variant way or even using a map of std::any? My intention is to dynamically iterate through the fields of a query.

For example:

db.query("select 0, 'hello world'", 
    [](const std::unordered_map<std::string, std::any>& record)
    {
         for (const auto& field : record)
             // get the field of any value
    }
 );

[znone]

This function has been implemented. You can try it.

db.query("select 0, 'hello world'", 
    [](const std::any& v1, const std::any& v2)
    {
          int i = std::get<int>(v1);
          std::string s = std::get<std::string>(v2);
    }
 );