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Could you provide more detail? I wasn't necessarily expecting that the functors would live in Hask. More like one functor going out of Hask, to some other category, and the other coming back. Moggi, for instance, from what I can gather, defines functors to some kind of metalanguage.

Bartosz Milewski
– Bartosz Milewski

2011-01-15 16:50:01 +00:00
Commented Jan 15, 2011 at 16:50
@BartoszMilewski: only just decided to revisit this question! I have constructed an Agda proof explaining it better: hpaste.org/68257 . I'm also going to make a few more of these explaining what pairs of adjoint functors other common Haskell monads arise from.

copumpkin
– copumpkin

2012-05-09 17:40:07 +00:00
Commented May 9, 2012 at 17:40

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