[R] Restricting Access to Function Codes

[Gamal Azim]

I am writing some educational simulation functions (R
funcns) for undergrad students. The functions will be
publicly placed in one of the university labs so that
students can go and do their exploration and also will
be required to do some simulations based on certain
parameters they receive. Problem is how I can restrict
access to function codes so that students do not
change or mess up with them. Any ideas?
Thanks!
Gamal

Note: functions are progressively added to as the
course progresses so there is no complete package to
install beforehand.