Strange code convention for exercises in ObjectProgramming

In 2-ObjectProgramming/2b-hands-on.ipynb it is asked to transform compute_power_of_2_approx() that will become a method named Compute(). In 2-ObjectProgramming/3b-hands-on.ipynb it is asked to introduce a method AsDouble().

From the beginning, the code convention for the exercises were:

• Classes are named with camel case starting with uppercase E.g. PowerOfTwoApprox.
• Member functions and free functions are in lowercase and use underscore separators. E.g. void display_power_of_2_approx(int Nbits, double value). But in the course, classes, member functions and free functions are upper camel case.

Any preference ? It should be coherent. Maybe easier to modify on exercises.