You can find theory questions here

1. Implement std::variant
2. Implement std::any
3. Implement std::optional
4. Implement a circular queue with the following methods
   • resize
   • push_back
   • pop_back
   • push_front
   • pop_front
   • iterator
5. Zip muliple same sized compile time vectors into a single vector by multiplying all the elements at each index
6. Remove adjacent duplicates from a compile time vector
7. Perpend a number to a compile time vector
8. Implement the following specializations of print function
   • For integral types
   • Class has a iterator
9. Implement std::string, focus on SSO
10. Implement Memory Pools, taken help from this
11. Implement std::vector, don't use the new operator
12. Implement std::tuple, using C++20 ways