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| safeFromIntegral :: | |
| forall a b. | |
| ( Integral a, | |
| Integral b, | |
| Bounded b | |
| ) => | |
| a -> | |
| Maybe b | |
| safeFromIntegral x = | |
| if (intX >= intMin) && (intX <= intMax) | |
| then Just $ fromIntegral x | |
| else Nothing | |
| where | |
| intX = fromIntegral x :: Integer | |
| intMin = fromIntegral (minBound :: b) :: Integer | |
| intMax = fromIntegral (maxBound :: b) :: Integer |
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