Being Cleverly Lazy

cleverly How being lazy makes you a be2er developer. Christian Heilmann – Web 2.0 Expo, Prague – October 2009

I am a developer evangelist.

h2p://developer‐evangelism.com/web.php

<dfn>cleverly lazy</dfn> Lazy: “I don’t want to do that.” Cleverly lazy: “I don't want to do that ever again so I do it right this Eme.”

Lazily build products: Do the job, but are impossible to maintain.

Cleverly lazily build products: Do the job, are easy to understand, extend and are built on a solid base.

Our job: evolving the web

To do this, we need to be free to do new things.

Problem is that as developers, we stand on our own way.

The biggest developer trap. h"p://www.ﬂickr.com/photos/snappa2006/3194326965/

The feature Simple loop Complex Feedback Features

We don't develop the web ‐ we ﬁll it up with soluEons to the same problem all of which are half done.

This is my soluEon, and it is be2er than anybody elses, because...

Short a2enEon span.

Code wrecks are a security issue! h"p://www.ﬂickr.com/photos/paleontour/2489523776/

Browsers suck!

Things you need to know as a web developer: ★ The technologies involved ★ How browsers deal with these technologies and how they fail to support them ★ Security concerns and a2ack vectors ★ Usability and accessibility of the product ★ InternaEonalisaEon of our products ★ Performance concerns ★ MulEple plaXorm support ★ Flexibility of the interface

Good developers are like librarians. h2p://www.ﬂickr.com/photos/feliciaday/3828388329/

A solid foundaEon. h"p://www.ﬂickr.com/photos/mangpages/2111892822/

Building with components. http://www.flickr.com/photos/seven13avenue/2080281038/

A good debugging environment. h"p://www.ﬂickr.com/photos/anijdam/3587129389/

Planning for extension. h"p://www.ﬂickr.com/photos/anniemole/103641208/

Write documentaEon. h"p://www.ﬂickr.com/photos/tnarik/366393127/

h2p://developer.yahoo.com/yui/

h2p://developer.yahoo.com/ypa2erns

http://ui.jquery.com/ http://ui.jquery.com

h2p://developer.yahoo.com/yui/arEcles/skinning/

DocumentaEon.

h2p://developer.yahoo.com/yui/grids/builder/

h2p://developer.yahoo.com/yui/examples/

h2p://developer.yahoo.com/performance/

h2p://developer.yahoo.com/yslow/

Using the web. CMS

Using APIs.

The Yahoo Query Language, or short YQL is a uniﬁed interface language to the web. h2p://developer.yahoo.com/yql/

select {what} from {source} where {conditions} | {filters}

http://query.yahooapis.com/ v1/public/yql?q={query} &format={format}

For example: select * from geo.places where text='london,uk'

Get only the where on earth ID select woeid from geo.places where text='london,uk'

Then mix: select id from flickr.photos.search where woe_id in (select woeid from geo.places where text='london,uk') and license=4

And get all the info... select * from flickr.photos.info where photo_id in (select id from flickr.photos.search where woe_id in (select woeid from geo.places where text='london,uk') and license=4)

Display the results in a few lines... http://isithackday.com/hacks/cantine/ index.php?loc=covent+garden http://isithackday.com/hacks/ajaxexperience/flickrgeophotos.html

Or use already exisEng widgets http://isithackday.com/hacks/cantine/ index.php?loc=covent+garden h2p://isithackday.com/hacks/canEne/

h2p://isithackday.com/hacks/frankfurt

Learn YQL by doing http://developer.yahoo.com/yql/console/

Any data will do... atom csv feed select * from html json microformats rss xml

Any data will do... http://www.dcs.gla.ac.uk/~joy/fun/jokes/TV.html

http://isithackday.com/hacks/scraping-with-yql/

http://github.com/spullara/yql-tables/tree/master

Thanks! Christian Heilmann http://wait-till-i.com http://developer-evangelism.com http://twitter.com/codepo8 h2p://www.ﬂickr.com/photos/mringlein/3463288828/

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Being Cleverly Lazy

by Christian Heilmann

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