Passing DBs Through Continuations
Hacker News (AI keywords)7 days agoTutorialThe post explains how continuation-passing style can express database operators without materializing intermediate results. Using Prela and Julia examples, it shows list transformations, relational composition, product, scan, and probe being expanded through inlining. The result is modular query code that can compile into tight columnar loops, though the author notes assumptions around JIT cost and dense primary keys.
No Let, No Rec, No Problem: A Gentler Introduction to the Y and Z Combinators
Hacker News (AI keywords)12 days agoTutorialBased only on the title, this appears to be a programming-language tutorial about Y and Z combinators. It likely explains how recursion can be represented without named bindings or built-in recursive definitions. The exact examples, language, and conclusions cannot be confirmed because the original article content was not provided.