Final answer:
The student is instructed to create a templated class 'Set' using a 'has-a' relationship with an 'ArrayBag' class. They need to add an 'add' method that only adds unique items to the bag, reflecting the unique elements property of a mathematical set.
Step-by-step explanation:
The student is asking about creating a templated class Set in a programming context, specifically within object-oriented programming. The Set class should use another class called ArrayBag as a component for storing elements, demonstrating a composition relationship often described as "has-a". The public functionality required for the Set class is a method called add, which should add a new element to the Set. The method signature provided is bool add(const ItemType& newEntry).
A basic example of what this might look like in C++ is:
template<typename ItemType>
class Set {
private:
ArrayBag<ItemType> bag;
public:
bool add(const ItemType& newEntry) {
// Add item to bag, avoiding duplicates
if (!bag.contains(newEntry)) {
return bag.add(newEntry);
}
return false;
}
//... additional functions as necessary ...
};
This code snippet demonstrates a class template that defines an 'add' function, which returns a boolean indicating whether the addition of the new entry was successful. The add method involves checking if the item already exists within the bag to ensure each element in the Set is unique, following the mathematical definition of a set.