Ashok Argent-Katwala

A sunny day on the seafront at Southwold in Suffolk.

With a very fine pint of Adnams Broadside on the seafront at Southwold in Suffolk. [Larger picture]

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At 18:56 BST, 3rd July 2009

Great selection of American craft beer at the Sloaney Pony. This might take all weekend to explore…

At 08:25 BST, 2nd July 2009 (From Web)

Amusing piece on @R4Today about the digital quality of DAB: i.e. binary all-or-nothing. #r4

At 08:05 BST, 2nd July 2009 (From Web)

Amused that FT article on Anderson's 'FREE' is behind register-doodad http://is.gd/1leBT Title+author into Google yields http://is.gd/1leEn

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Interesting articles elsewhere Feed

Mathematically modelling phantom traffic jams
on Boing Boing
Seattle in Motion at Sunset
on Dilettante
The Case of the Missing Journalists
on mediastandardstrust.blogspot.com
How busy is your train station? Every one detailed | News | guardian.co.uk
on www.guardian.co.uk
Fake David Miliband duo call it quits on Twitter | Media | guardian.co.uk
on www.guardian.co.uk

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I am Ashok Argent-Katwala. I moved to London to go to university and it has been home for 11 years. Soon I will be moving to Toronto, though, for an exciting new start. I am a computing researcher, slightly more engineer than scientist; I believe in a lot of things, especially that there's usually a right thing to do. More about me.

This site is just a few personal bits and pieces that don't fit on other sites I run. Since I get most of my best thinking done in decent cafés & pubs, I publish my recommendations on The List.

#policehide followup

officers with no visible identification

After the G20 mess, I'm exercised about the police failing to identify themselves properly while in uniform.

I took this picture of officers failing just so a few weeks ago. This week, I dropped it in to the local police station to ask what was going on, and to complain.

I've just heard back from the inspector there.

Tagged: Social, Politics

Posted at 09:13 BST, 8th May 2009.

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Police must not hide

The police have been misbehaving. I'm angry about that, and would like to do something practical.

#policehide

I'm pleased that people aren't sticking to the supposed ban on photographing the police. The videos of Ian Tomlinson being attacked from behind minutes before his death and the seemingly brutish attack on a woman at the memorial protest the following day show that we really do need some daylight here.

Update at 10:31 BST, 21st April 2009 – Added notes on how to tag things.

Tagged: Social, Politics, Rants

Posted at 10:36 BST, 16th April 2009.

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Cascading Test Sheets

Testing Web pages is a pretty complex task. Very often we settle for too little, checking little more than:

  • that our markup validates against the spec
  • that a simple link-checker doesn't find dead links
  • & that some monkey-testing doesn't turn up any glaring errors

Those are good checks to make, but we need to do a lot better.

I want to make some declarative statements about what is expected of different pages, and have them run routinely. For complicated pages, that depend on user-supplied, database-held or offsite data, I'd like to run the tests on any pages I might ever ship, and give the administrators a decent stab at recreating the error and damn-well fixing it.

Thankfully, the CSS people have done a fine job of allowing you to pick out parts of an HTML document and then apply styles to them. Better yet, we've just about reached the point where smart designers can express what they want in CSS, without needing to write anything terribly complicated.

This is a little idea for how to do that. There's no implementation yet, but I'm looking for feedback on doing it this way. The basic idea is to express some useful, human-level tests in a CSS-like language that make sense to more than code-nerds, and use them to test individual Web pages, or entire sites, and be more confident that they do all that you expect, and nothing that you don't.

Update at 16:03 BST, 8th April 2009 – Minor tweak to the examples.

Tagged: Code, Web, Technology

Posted at 15:48 BST, 8th April 2009.

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Ashok Katwala
My name before marriage. I've also been Ash Katwala or Ash Argent-Katwala at times – as a crutch for people who have trouble with Ashok.
ArsDigita London
I was employee #3 in London for aD.
Department of Computing, Imperial College London
Where I did my undergraduate degree, followed by a PhD in performance modelling and I now work as a researcher.
Westcliff High School for Boys (WHSB) in Essex
My high school, where I was a pupil 1988–95.