- Published on
Article · Through the layers
Rust Enum Niches: How Option<T> Can Cost No Extra Byte
Measured Rust enum layouts showing how invalid payload values encode Option discriminants, which optimizations are guaranteed, and what repr changes.
Writing archive
Everything published under Writing, newest first. Each entry is labelled as part of an investigation, an article or reference. Short engineering notes have their own archive.
- Published on
Article · Measurement
Evaluate Retrieval Separately From Answer Generation
A retrieval benchmark for separating missing evidence from generation failures using Recall@k, Precision@k, MRR, unanswerable questions, and controlled oracle context.- Published on
Article · Through the layers
Aho–Corasick Match Kinds in Rust: Standard, Leftmost-First, and Leftmost-Longest
The same patterns and haystack can produce different correct matches. I make Rust's three Aho–Corasick match kinds concrete and show how to choose by product semantics.- Published on
Article · Interrupted execution
Adaptive Concurrency for APIs With Changing Rate Limits
A measured additive-increase, multiplicative-decrease controller for finding useful API concurrency while respecting throttling, latency, retries, and tenant isolation.- Published on
Article · Through the layers
Rust Strict Provenance: Why a Pointer Is More Than an Address
A Rust pointer carries an address and provenance. Learn addr, with_addr, map_addr, exposed provenance, and sound pointer-tagging patterns.