[Haskell-cafe] Re: Why monoids will abide...

[David Leimbach]

You mean monoids right?  :-)

On Wed, Jan 21, 2009 at 1:30 AM, Eugene Kirpichov <ekirpichov at gmail.com>wrote:

> Wow. This is a cool point of view on monads, thank you for
> enlightening (the arrow stuff is yet too difficult for me to
> understand)!
>
> 2009/1/21 Andrzej Jaworski <himself at poczta.nom.pl>:
> > Monads are monoids in categories of functors C -> C Arrows are monoids in
> > subcategories of bifunctors (C^op) x C -> C  Trees are a playing ground
> for
> > functors in general:-)
> >
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