Tech News

The piece marks 50 years of Lisp, reflecting on the programming language’s history and lasting influence. Its title nods to Lisp’s lambda-based traditions and enduring ideas about closures and functional programming.

A new piece examines four approaches to maintaining report aggregates over a stream of receipts in ClickHouse and explains why each failed. The design ultimately kept recomputes aggregate cells from their underlying documents rather than adding up incremental values. It argues that an aggregate is a function, not a sum.

Color bars became TV’s most common test pattern because they let broadcasters and technicians quickly check signal, color, and alignment across the chain. The piece traces their history and explains what the bars actually reveal, while noting that Netflix has offered some unusual test programming of its own.

Echoloc is a minimalist horror game where players are blind and must click their tongue to echolocate. The twist is that enemies can hear the clicks too, turning the core mechanic into a source of tension.

Eric Park’s website has published “Taking another shot at the cheap IP camera, part 2,” a follow-up on his low-cost IP camera efforts. The post covers another attempt at a budget IP camera setup, continuing his earlier experiment.