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

Alberto G. Corona agocorona at gmail.com
Wed Mar 2 23:15:56 CET 2011

forward to web-devel:

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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