Articles from lemire.me

Developers discuss using AI coding agents to generate temporary code for testing designs, APIs, and integrations, calling the practice ephemeral or vibe-check testing.

The maintainer of several widely-used C++ open-source libraries (ada, fastfloat, simdjson, simdutf) shares a summer of AI-optimization work on them.

The author spent the summer using AI techniques to optimize several widely used open-source libraries, including ada, fastfloat, simdjson, and simdutf.

The article explains that Python's built‑in dict and set implementations can degrade to O(n²) lookup time when many keys hash to the same bucket, illustrating the impact of hash‑collision attacks.

Python's built‑in set and dict types can exhibit quadratic‑time behavior when many elements hash to the same bucket, causing worst‑case O(n²) performance.