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til/reason/seeding-and-generating-random-integers.md
2018-03-22 14:14:18 -05:00

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# Seeding And Generating Random Integers
It is easy enough to generate a series of random numbers using the `Random`
module's `int` function.
```reason
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.
```reason
Random.init(int_of_float(Js.Date.now()));
```
See a [live example
here](https://reasonml.github.io/en/try.html?reason=EoQwdgJg9gtgdASzAgLgCiSg+lAZl3AGyhHQCkBnOAEVIFM4woB3NASg4G4AobyuYgHM0oSLERh0ARgAMXPlSEjw0eJjSz5-JaNUTpctj21Rhu8es1GFA08rFrJGw5yA).