[Haskell-cafe] GHCI says we all drink left-handed

MarLinn monkleyon at gmail.com
Sat Apr 1 11:36:31 UTC 2017

You are right. But it gets worse! At first I assumed GHCi might just be 
saying "All left-handed people should be allowed to drink" but now I'm 
convinced it's biased. Following your definitions:

Prelude> any (<3) (Left Handed)
Prelude> False

Ouch! No love for left-handed people at all!

On 2017-04-01 13:08, Andreas Abel wrote:
> GHCi, version 7.10.3: http://www.haskell.org/ghc/  :? for help
> Prelude> data Handed = Handed
> Prelude> let drink beer = beer
> Prelude> all drink (Left Handed)
> True

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