New subject: Need advice: Haskell in Web Client

17 Jan 2012

      On Tue, Jan 17, 2012 at 6:42 PM, John Lenz  wrote:
...
HTML5 Canvas is great for charts.  If you go this route you might as well
use a library which draws charts for you instead of writing all this code
yourself.
Personally, I use extjs version 4 which has some amazing charts, but there
are other libraries out there.
http://www.sencha.com/**products/extjs/examples/#**sample-3http://www.sencha.com/products/extjs/examples/#sample-3
Essentially the server provides the data in JSON or XML some other format,
and the extjs code draws the charts on the client side.
If you go with extjs, then the server side I would suggest a small, simple
yesod or snap server.   You could probably get the server under a hundred
lines of code with yesod; see some of the examples in the yesod book.
 yesod or snap would serve JSON of the statistics on request, and also
serve the javascript files which draw the charts.
Yes, I was thinking about using Haskell to generate everything that
specific Javascript library needs to display charts in browser. Naturally
charts are to be displayed by this library itself. I also would like to
have Haskell tools to generate Web GUI in Javascript.
As for yesod, I am not sure that I like approach which mixes HTML with
code, or even worse - creates a new weird HTML-like language like  'whamlet
quasi-quotation', for example:

<!-- <a href=@{Page1R}>Go to page 1! -->

I prefer using Turing complete PL to program web client, like the one used
in GWT (Java) or Cappuccino  (Objective-J). http://cappuccino.org/learn/
In this case you /almost/ don't need to know  HTML, CSS, DOM, Ajax, etc. to
develop WebUI and good PL lets you concentrate on problem domain instead of
bothering about browser support.
It is a real pity that Haskell still has no such tools to generate Web GUI
in Javascript. (((

Re: [Haskell-cafe] Need advice: Haskell in Web Client

dokondr

Dag Odenhall

dokondr

Bardur Arantsson

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