## Why use Haskell ?

Using Haskell is clearly unsual when associated to actuaries. Actuaries do not program that much, they rather use softwares like R or Matlab. My goal here is to use Haskell to model actuarial concepts

## Simple computations

The simplest thing that can be computed is the premium, given an insured value. Here, we handle everything as Double.

```
basePremium :: Double -> Double -> Double
basePremium baserate exposure
-- manage exceptions (negative base rate)
| baserate < 0
= error "Negative rate"
-- manage exceptions (negative insured value)
| exposure < 0
= error "Negative exposure"
-- nominal case
| otherwise
= baserate * exposure
main :: IO ()
main = do
print (basePremium 0.0005 1000000)
```