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NonZero numbers are numbers excluding zero.
Because the constructor for `NonZero`

is not exported, you can be
confident that if you are using a `NonZero`

, then its `NonZero`

.

type NonZero number
= NonZero number

fromNum : number -> Maybe (NonZero number)

toNum : NonZero number -> number

```
module NonZero exposing (NonZero, fromNum, toNum)
{-|
NonZero numbers are numbers excluding zero.
Because the constructor for `NonZero` is not exported, you can be
confident that if you are using a `NonZero`, then its `NonZero`.
@docs NonZero, fromNum, toNum
-}
{-| -}
type NonZero number
= NonZero number
{-| -}
fromNum : number -> Maybe (NonZero number)
fromNum x =
if x == 0 then
Nothing
else
Just (NonZero x)
{-| -}
toNum : NonZero number -> number
toNum (NonZero x) =
x
```