struct Offering
{
    string       activity_code;
    session_type session_code;

    string activity_session_code() const;

    bool operator==(const Offering& other) const;
};

Represents a single offering of a course.

string activity_code;

The activity code of the course.

session_type session_code;

The session (fall, spring, or full-year) in which the course is offered.

string activity_session_code() const;

Get the combined activity/session code for this offering.

bool operator==(const Offering& other) const;

Compare this offering to another for equality. Two offerings are equal if their activity codes and session codes are equal.