Seeding And Generating Random Integers

It is easy enough to generate a series of random numbers using the Random module's int function.

Random.int(10);

This will generate a random integer between 0 and 9.

You may notice that the randomness is the same each time you run your program. That is because you have fixed seed. To make sure you have a different seed each time your program runs, you can initialize the random number generator with something different at each run, such as the current time.

Random.init(int_of_float(Js.Date.now()));

See a live example here.