[Haskell-cafe] Category theory as a design tool

Sebastien Zany sebastien at chaoticresearch.com
Wed Jun 22 08:17:47 CEST 2011

Hi Arnaud,

I'm not the best person to answer this question, and I'm not certain this
constitutes an answer, but you might be interested in Conal Elliott's paper
"Denotational design with type class morphisms" available at


On Tue, Jun 21, 2011 at 11:30 PM, Arnaud Bailly <arnaud.oqube at gmail.com>wrote:

> (2nd try, took my gloves off...)
> Hello Café,
> I have been fascinated by Cat. theory for quite a few years now, as
> most people who get close to it I think.
> I am a developer, working mostly in Java for my living and dabbling
> with haskell and scala in my spare time and assuming the frustration
> of having to live in an imperative word. More often than not, I find
> myself trying to use constructs from FP in my code, mostly simple
> closures and typical data types (eg. Maybe, Either...). I have read
> with a lot of interest FPS (http://homepages.mcs.vuw.ac.nz/~tk/fps/)
> which exposes  a number of OO patterns inspired by FP.
> Are there works/thesis/books/articles/blogs that try to use Cat.
> theory explicitly as a tool/language for designing software (not as an
> underlying formalisation or semantics)? Is the question even
> meaningful?
> Thanks in advance,
> Arnaud
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