Initializing a new member variable in a C++ Struct query

Question

I am trying to initialize a new member variable in a struct and use it elsewhere,

This is the struct

struct Subscription
{
    const eprosima::xtypes::DynamicType *type;
    soss::TopicSubscriberSystem::SubscriptionCallback callback;
       
};

Subscription subscription{&message_type, callback, fields};

---

And I was told to,

"You will need to update the definition of the Subscription struct to match the way we are trying to initialize it there for the fields "

I hovered over the fields variable in the code which was inside a for loop elsewhere, then vscode told me the type is

std::map<std::string, std::string> fields

so that tells me the type of the new member variable I need to add to the Subscription struct

Just not sure what to add on the struct tho, any idea

Answer 1

Maybe I'm missing something here but did this occur to you?

struct Subscription
{
    const eprosima::xtypes::DynamicType *type;
    soss::TopicSubscriberSystem::SubscriptionCallback callback;
    std::map<std::string, std::string> fields;
};

That seems to be what you are being asked to do.