File handling can be done using Foundation, which I believe has API parity between Darwin and Linux at least.
I think the point of the example was to demonstrate importing platform-specific modules, not random number generation per se. But you're right, it should probably be updated to do something else.
I think the point of the example was to demonstrate importing platform-specific modules, not random number generation per se. But you're right, it should probably be updated to do something else.