[Haskell-cafe] Haskell showcase in 5 minutes

Ertugrul Söylemez es at ertes.de
Tue Feb 28 20:55:26 CET 2012

Arnaud Bailly <arnaud.oqube at gmail.com> wrote:

> Thanks Yves for your advice. And I agree with you that too much
> laziness may be mind-blowing for most of the audience, yet this is one
> of the characteristics of Haskell, whether or not we like it and
> whatever troubles it can induce.
> I really think the knapsack is simple, not too far away from real
> world and might be demonstrated with live code in 5 minutes. I will
> have a look anyway at more "spectacular" stuff like gloss or yesod but
> I fear this is out of scope.

Gloss is definitely not out of scope.  It is to simple 2D graphics what
Yesod is to web applications.  I write two-minutes visualizations using
it all the time.  Of course if you want to show something great, you
shouldn't fear learning it first.

Also showing the language features, despite their greatness, makes
people go like:  "Ok, that's great, but I can do it in my language using
<insert control construct here>".  If you really don't want to go for
something amazing like Diagrams, Gloss or Yesod, I really suggest at
least bringing the run-time system into the game.  Show concurrency, STM
and parallel evaluation.  Show how you can write a full-featured finger
server in five minutes that is fast, secure and amazingly readable.
Something like that.

Math problems amaze Haskellers, not programmers in general.  Show how
Haskell solves practical problems, for which there is no simple solution
in more common languages.  Don't show why Haskell is also good.  Show
why Haskell is /a lot better/.


nightmare = unsafePerformIO (getWrongWife >>= sex)
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