[Haskell-cafe] How to express constraint succeeded?

[Paul]

Ooh, yes! Thank you very much!


23.08.2018 14:24, Li-yao Xia wrote:
> Hello Paul,
>
>     (() :: Constraint)
>
> is the empty constraint. The kind annotation is sometimes optional but 
> useful to disambiguate from the unit type.
>
> Li-yao
>
> On 08/23/2018 07:18 AM, Paul wrote:
>> Hello, Dear Cafe! I have expression
>>
>>      'True ~ 'True
>>
>> in right hand side of type level function. Is some "constant" for the 
>> same?
>>
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