[Haskell-beginners] Bool newtype

[Rein Henrichs]

Consider replacing your bools with meaningful sum types, which avoids this
issue, prevents boolean blindness, and makes your code more
self-documenting.

For example, instead of newtype SwitchsState = SwitchState Bool, data
SwitchState = On | Off
On Sun, Aug 7, 2016 at 2:47 PM Imants Cekusins <imantc at gmail.com> wrote:

> found it:
>
> https://wiki.haskell.org/GHC/Coercible
>
> yep, it type checks.
>
> Ta
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