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The most popular blog posts about software engineering on Hacker News. 21,827 posts.

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6008

The Order of the JSON

When I read Fitz’ tweet about ordered JSON my body shuddered, as my brain was flooded with a past experience that taught me a frightening lesson on technology being used by non-technical comp…

6021

Data first, not code first

Developers hate him! We'll cover some standard tips and tricks here, but we're not really interested in those. We're looking for the One Weird Trick to rule them all. Hopefully each trick we encounter brings us closer to coding Mecca. In the beginning The first video game I ever wrote was called Ninja Wars. Yes, that…

6023

Re-implementing LangChain in 100 lines of code

LangChain has become a tremendously popular toolkit for building a wide range of LLM-powered applications, including chat, Q&A and document search. In this blogpost I re-implement some of the novel LangChain functionality as a learning exercise, looking at the low-level prompts it uses to create these higher level…

6028

A Clojure Crash Course

It’s time to learn how to actually do things with Clojure! Hot damn! Although you’ve undoubtedly heard of Clojure’s awesome concurrency support and other stupendous features, Clojure’s most salient characteristic is that it is a Lisp. In this chapter, you’ll explore the elements that compose this Lisp core: syntax…

6030

A deep dive into Linux's new mseal syscall

If you love exploit mitigations, you may have heard of a new system call named mseal landing into the Linux kernel’s 6.10 release, providing a protection called “memory sealing.” Beyond notes from the authors, very little information about this mitigation exists. In this blog post, we’ll explain what this syscall is…