[Haskell-cafe] Pointed, but not Applicative
Tony Morris
tonymorris at gmail.com
Sun Aug 28 12:41:30 CEST 2011
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On 28/08/11 01:41, Sönke Hahn wrote:
> Hi!
>
> I was reading through the Typeclassopedia ([1]) and I was wondering which
> type could be an instance of Pointed, but not of Applicative. But I can't
> think of one. Any ideas?
>
> Sönke
>
> [1] http://www.haskell.org/haskellwiki/Typeclassopedia
>
>
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Pointed f => Pointed (StateT s f)
but not
Applicative f => Applicative (StateT s f)
- --
Tony Morris
http://tmorris.net/
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