Ruby.rewrite(Ruby)
In this RubyFringe talk, Reginald Braithwaite writes Ruby code to read, write, and rewrite Ruby. Demos include extending Ruby with conditional expressions, call-by-name and more.
- Ruby,
Tracking change and innovation in the enterprise software development community
Posted by Mark Little on Dec 07, 2007 09:46 AM
The Google team announced the release of the Chart API for dynamically generating charts for embedding in Web pages. According to Steve Crossan:We actually built this originally to use internally - we use it on Google Video and Google Finance for example. It seemed like it would be a good thing to open up to other users too.Plus, this is an example of the output from the "20% time" Google offer to their developers!
It's a nice, simple and yet powerful API that opens up some interesting possibilities. Being dynamic also means that there's potential for (relatively) real-time updates of information.var simpleEncoding = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
function simpleEncode(values,maxValue) {
var chartData = ['s:'];
for (var i = 0; i < values.length; i++) {
var currentValue = values[i];
if (!isNaN(currentValue) && currentValue >= 0) {
chartData.push(simpleEncoding.charAt(Math.round((simpleEncoding.length-1) * currentValue / maxValue)));
}
else {
chartData.push('_');
}
}
return chartData.join('');
}
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In this RubyFringe talk, Reginald Braithwaite writes Ruby code to read, write, and rewrite Ruby. Demos include extending Ruby with conditional expressions, call-by-name and more.
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