#includeusing namespace boost::parameter; parameter_list params; params = params(int(42), 3.14, "hello world"); params = params.append("another string");
#includeIn this example, we create a JSON object `obj` with a single key-value pair. We then use the `as_object()` method to convert the JSON value into a JSON object, and then use the `append()` method to add another key-value pair to the object. Overall, the `append()` method is a useful function for dynamically building lists of parameters or values in C++.using namespace web; json::value obj; obj["name"] = json::value::string(U("John")); obj.as_object().append(std::make_pair(U("age"), json::value::number(30)));