Most cited

Posts that commenters keep linking to, ranked by how many different people have cited them in Hacker News comments. 637 posts.

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2014
525

PHP 7's new hashtable implementation

About three years ago I wrote an article analyzing the memory usage of arrays in PHP 5. As part of the work on the upcoming PHP 7, large parts of the Zend Engine have been rewritten with a focus on smaller data structures requiring fewer allocations. In this article I will provide an overview of the new hashtable…

532

The Bubble Question

Everywhere I go, everywhere I speak, I get asked this question. Are we in a bubble? I’ve been getting asked that question for at least four years now. It’s hard to sustain a bubble for four years. But we are also not in a normal valuation environment for high growth tech companies and we have […]

536

Meanwhile, at code.org

In Mindstorms I made the claim that children can learn to program and that learning to program can affect the way they learn everything else. I had in mind something like the process of re-empowerment of probability: the ability to program would allow a student to learn and use powerful forms of proba- bilistic ideas…

537

Resumes suck for hiring engineers

In this experiment, I wanted to see how good engineers and recruiters were at resume-based candidate filtering. Going into it, I was pretty sure that engineers would do a much better job than recruiters. However, that’s not what happened at all. As it turned out, people were pretty bad at filtering resumes across the…