[Haskell-cafe] A functional programming solution for Mr and Mrs Hollingberry

Andreas Pauley apauley at gmail.com
Thu May 24 19:56:37 CEST 2012

On Wed, May 23, 2012 at 11:37 PM, Richard O'Keefe <ok at cs.otago.ac.nz> wrote:
> On 21/05/2012, at 5:33 AM, Andreas Pauley wrote:
>> With this in mind I've created a programming exercise where I imagine
>> an OO programmer would use an object hierarchy with subtype
>> polymorphism as part of the solution.
> Being unfamiliar with git, I've submitted an AWK answer by e-mail.

I have committed the awk version for those interested to see:

> I've used quite a few OO languages.  I like to think that I *am*
> an OO programmer.  But this exercise struck me from the beginning
> as something where classes would add nothing but bulk.  As a fan
> of Smalltalk, I have to say that the Smalltalk version confirmed
> this for me; a Smalltalk solution for this exercise could be a lot
> smaller than that one if it _didn't_ introduce new classes.

Maybe this is an example of where we as an industry has been somewhat
For many programmers it is difficult to envision coding pretty much
anything without classes.

Do you know of an exercise where classes would add value? Something
fairly small, roughly similar in size to this exercise.


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