My mental model of setf was wrong
Simon Dobson realizes that his understanding of the Lisp `setf` macro was flawed; he previously viewed it as directly modifying locations in memory, but it actually expands at compile time to invoke specialized methods based on the structure of its arguments. This insight reveals the ability to create custom `setf`-like macros and highlights the flexibility and power of Lisp\'s macro and generic function systems. Ultimately, `setf` is not as special as initially thought; it encapsulates a structured combination of macros, synthesized function names, and generic functions within Lisp programming.
Movable tree CRDTs and Loro\'s implementation
The article discusses the implementation challenges of Movable Tree Conflict-free Replicated Data Types (CRDTs) in collaborative systems, particularly focusing on conflict resolution strategies such as globally ordered logical timestamps and sophisticated move operations. Loro\'s implementation integrates these concepts to manage node movement while addressing potential conflicts, particularly in sortable child node arrangements, by utilizing algorithms like Fractional Index for effective node sequencing. The performance benchmarks indicate that Loro\'s system effectively supports real-time collaboration and version management in distributed environments.
Show HN: Tea-tasting, a Python package for the statistical analysis of A/B tests
The "tea-tasting" Python package is designed for the statistical analysis of A/B tests, offering various methods such as Student\'s t-test, Bootstrap, and power analysis, along with support for numerous data backends like BigQuery and PostgreSQL. Its extensible API allows users to define custom metrics, while also facilitating variance reduction techniques and accurate statistical power calculations. Comprehensive documentation is provided to help users effectively implement and utilize the package in their experimental analyses.
Launch HN: Roame (YC S23) – flight search engine for your credit card points
Tim and Zi from Roame have developed a flight search engine that helps users find and redeem business class flights using points and miles instead of cash, aiming to simplify the previously tedious process of booking award travel. The tool searches up to 16 airline loyalty programs in real time, providing users with information on flight availability and redemption options, with a free version that accesses a database of popular routes and a paid version extending to a full calendar year. They encourage user feedback and ideas as they continue to enhance their platform.
SVG Triangle of Compromise
The text discusses different methods for displaying SVGs (Scalable Vector Graphics) on the web, emphasizing the trade-offs between style, cacheability, and dimensions. Options include using SVGs via `` elements (which are cacheable but less stylable), `