PurplePen.EventDB.ReplaceSpecial C# (CSharp) Method

        public void ReplaceSpecial(Id<Special> id, Special special)
        {
            specialStore.Replace(id, special);
        }

        // Change the set of courses that a special is on. If all the courses are in the new array, changes the special to display in
        // all courses.
        public static void ChangeDisplayedCourses(EventDB eventDB, Id<Special> specialId, CourseDesignator[] displayedCourses)
        {
            // Check if the array contains all of the courses.
            bool allCourses = true;
            Special special = (Special) eventDB.GetSpecial(specialId).Clone();

            foreach (Id<Course> courseId in eventDB.AllCourseIds) {
                if (Array.IndexOf(displayedCourses, new CourseDesignator(courseId)) < 0) {
                    allCourses = false;
                    break;
                }
            }

            if (special.kind == SpecialKind.Descriptions) {
                if (Array.IndexOf(displayedCourses, CourseDesignator.AllControls) < 0)
                    allCourses = false;   // all courses includes all controls only for descriptions.
            }

            special.allCourses = allCourses;
            if (allCourses)
                special.courses = null;
            else
                special.courses = displayedCourses;
            eventDB.ReplaceSpecial(specialId, special);

            // Descriptions special are unique per course -- enforce this.
            if (special.kind == SpecialKind.Descriptions)
                UpdateDescriptionCourses(eventDB, specialId);
        }