[Haskell-cafe] type safe web forms at compile time Was: Re: Ur vs Haskell

Alberto G. Corona agocorona at gmail.com
Wed Mar 2 22:33:38 CET 2011

> WASH is full of wonderful ideas .  packed in a not so wonderful syntax. It
> is worth to evolve it.
> WASH does force form safety in a similar way to Formlets
> <http://hackage.haskell.org/package/formlets>: because the form and the
> form read code are generated automatically by a class instance. So there is
> no need for, type checking safety
> The problem comes when the form is generated and/or maintained( edited by
> some people (some forms have lot of formating in the real world) while the
> form handling code is .maintained by some other people, the programmers.
> In this real case , type cheching is very important.
> 2011/3/2 Marc Weber <marco-oweber at gmx.de>
> Excerpts from Alberto G. Corona's message of Wed Mar 02 20:53:28 +0000
>> 2011:
>> > Some time ago I forgot to forward this message to thie ur versus Haskell
>> > <http://www.haskell.org/pipermail/haskell-cafe/2011-January/088060.html
>> >discussion,
>> > (as usual)
>> > ---
>> > The most impressive feature (of ur) is the compile time checking of
>> > conformance between the  form and  the form results. This can be done in
>> See WASH (-> hackage). So there is a Haskell implementation. There are
>> small
>> differences though: urweb has nicer URLS which should be much more SEO
>> friendly.
>> From my point of view its not only about forms. Its also about checking
>> SQL queries. And urweb seems to do this very well.
>> Marc Weber
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