[Haskell-cafe] ANN: The Typeclassopedia, and request for feedback

Fraser Wilson blancolioni at gmail.com
Mon Feb 16 09:30:19 EST 2009

Super!  Also, best definition of bottom I've yet seen -- "ignoring _|_,
which is a party pooper".  Like good code, it's short, to the point, and
obviously correct.

Thanks for this.  It's great to have it all in one place, and so
entertainingly presented.


On Mon, Feb 16, 2009 at 10:29 AM, Brent Yorgey <byorgey at seas.upenn.edu>wrote:

> Hi all,
> If you've noticed the lack of a HWN this week, that's because I've
> been doggedly finishing my article entitled 'The Typeclassopedia',
> which I have just submitted for publication in the Monad.Reader.
> Here's the abstract:
>    The standard Haskell libraries feature a number of type classes
>    with algebraic or categorical underpinnings. Becoming a fluent
>    Haskell hacker requires intimate familiarity with them all, yet
>    acquiring this familiarity often involves combing through a
>    mountain of tutorials, blog posts, mailing list archives, and IRC
>    logs.
>    The goal of this article is to serve as a starting point for the
>    student of Haskell wishing to gain a firm grasp of its standard
>    type classes. The essentials of each type class are introduced,
>    with examples, commentary, and extensive references for further
>    reading.
> My hope is that this will be a valuable resource to the Haskell
> community, especially those who are learning.  Any feedback would be
> greatly appreciated, especially if it helps improve the article before
> publication.  A draft can be found here:
> http://www.cis.upenn.edu/~byorgey/papers/typeclassopedia-draft-090216.pdf<http://www.cis.upenn.edu/%7Ebyorgey/papers/typeclassopedia-draft-090216.pdf>
> Also see my blog post for a bit more info:
> http://byorgey.wordpress.com/2009/02/16/the-typeclassopedia-request-for-feedback/
> happy haskelling!
> -Brent
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