Top posts

Every blog post that took off on Hacker News, ranked by the votes of its best submission. 14,535 posts.

Software Engineering
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631

Parsing JSON is a Minefield

[2016-10-26] First version of the article [2016-10-28] Presentation at Soft-Shake Conference, Geneva ( slides ) [2016-11-01] Article and comments in The Register [2017-11-16] Presentation at Black Alps Security Conference, Yverdon ( slides ) [2018-03-09] Presentation at Toulouse Hacking Conference ( slides )…

634

Surprisingly Slow

I have an affinity for performance optimization and making software as efficient as possible. Over the years, I've encountered specific instances and common patterns that make software or computers slow. In this post, I'll shine a spotlight on some of them.

635

Xmas.c (1988)

The second block has more real work going on. If the character stored in the variable _ does not match the first character of the string a , the code recurses in such a way that this same block of code will again be entered. That is, t=-65 forces a return to the if (t < -50) block. The recursion steps through string a…

653

Why does calloc exist?

[Edit: Welcome Hacker News readers! Before we dive into the neat memory management esoterica, I want to briefly note that as engineers we have an ethical obligation in our work to consider the "safety, health, and welfare of the public" , because if we don't, terrible things happen . This is a challenging…