Challenge: Type-Erased Container

[farhangamary]

Create a class TypeErasedContainer that can hold any type of container (like std::vector, std::set, std::list, etc.) without knowing the type at compile time. The class should allow you to add different containers, store them, and iterate over the elements. This should be accomplished using type erasure techniques in C++.

The core idea is that TypeErasedContainer should be able to hold any container type and provide a uniform way to interact with its elements. The key operations should include:

• Adding a container to the TypeErasedContainer.
• Iterating through the elements of the container in the order they were added.
• Ensuring that both heterogeneous and homogeneous containers can be handled correctly.

Requirements:

• Use C++'s type erasure to handle different container types.
• The TypeErasedContainer should support any container type, including but not limited to std::vector , std::set , std::list , etc.
• The container should allow iterating through its elements in a uniform way.
• Implement proper testing for various edge cases.

Test Cases:
Test Case 1: Adding Different Container Types
Test that multiple container types can be added to the TypeErasedContainer and iterated correctly.
Hint: Verify the correct behavior when mixing containers like std::vector and std::set .

Test Case 2: Adding Same Type of Containers
Test that multiple containers of the same type (e.g., std::vector<int>) are added and iterated correctly.
Hint: Ensure that all elements from both containers are iterated in the expected order.

Test Case 3: Adding a Single Container Type and Iteration
Test that a single container type (e.g., std::list<double> ) works as expected.
Hint: Verify that all elements of the container are correctly iterated.

Test Case 4: Adding Empty Container
Test that an empty container (e.g., std::vector<int>{} ) doesn't cause any issues when added to the TypeErasedContainer.
Hint: Ensure that no elements are present for empty containers.

Test Case 5: Adding and Removing Elements
Test the ability to dynamically add and remove elements from the container.
Hint: Verify the correct handling of dynamic modifications to the container (adding/removing elements).

A better solution will make the TypeErasedContainer as generic as possible.
Think about how you can abstract the container operations (like iteration) while not knowing the container's type at compile time.