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

Rodrigo Steinmüller rodrigoswanderley at gmail.com
Mon Feb 16 10:35:42 EST 2009


First of all, great article!  Was really fun to read.

I just had some difficulties to follow up the occurrences of the <$>
operator on section Instances page 9.  The operator is explained only a
little bit later, on Laws page 10.


2009/2/16 Andrew Wagner <wagner.andrew at gmail.com>

> Positively brilliant. What else can be said? Time for Brent to sign a
> "Haskell recipes" deal with O'Reilly (or whatever the next normal book
> should be).
> On Mon, Feb 16, 2009 at 4:29 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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