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Re: [Haskell-cafe] Short circuiting and the Maybe monad

Subject: Re: [Haskell-cafe] Short circuiting and the Maybe monad
From: Derek Elkins
Date: Wed, 14 May 2008 18:40:22 -0500
On Wed, 2008-05-14 at 12:42 -0700, Dan Piponi wrote:
> On Wed, May 14, 2008 at 12:03 PM, Andrew Coppin
> <andrewcoppin@xxxxxxxxxxxxxx> wrote:
> > "It is well-known that trees with substitution form a monad."
> Now that's funny. Compare with the first line of this paper:
> http://citeseer.ist.psu.edu/510658.html

Well, it's well-known.

Further, not only do they form a monad, but they are a free monad.

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