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Software Engineering

The most popular blog posts about software engineering on Hacker News. 488 posts.

2011
393

MySQL Text vs. Varchar Performance

Starting with MySQL 5.0.3, the maximum field length for VARCHAR fields was increased from 255 characters to 65,535 characters. This is good news, as VARCHAR fields, as opposed to TEXT fields, are stored in-row for the MyISAM storage engine (InnoDB has different characteristics). TEXT and BLOB fields are not stored…

403

A Healthy Diet For The Mind

I've been enjoying teaching Intelligent Systems again this semester. A big part of the fun is re-reading old papers. I had a lot of fun re-reading and thinking about the ideas in William Clancey 's classic paper, Heuristic Classification . Long-time readers may recall me mentioning this paper in a long-ago post about…

404

Django and Python 3

About 18 months ago I blogged about Django and Python 3, I gave the official roadmap. Not a lot has changed since then unfortunately, we’ve dropped 2.3 entirely, 2.4 is on it’s way out, but there’s no 3.X support in core. One fun thing has changed though: I get to help set the roadmap, which is a) cool, b) means the…

405

Build a CMS, no forms allowed

You may have noticed that quite a lot is happening in the Midgard land. Nowadays Midgard2 itself is a generic content repository that can be used for both desktop and web applications. Midgard MVC is a generic web framework for PHP5 that can be used with Midgard2 or without it. And then there is Midgard Create, the…

418

Actual JavaScript Engine Performance

JSMeter: Measuring JavaScript Behavior in the Wild showed that benchmarks are not representative of the behavior of real web applications. But lacking credible benchmarks, engine developers are tuning to what they have. The danger is that the performance of the engines will be tuned to non-representative benchmarks…