Simon Willison’s Weblog

Blocks in Objective-C. Closures are coming soon to Objective-C - interesting syntax, a regular curly brace block preceded by a caret ^{ ... }.

Posted 29th December 2008 at 7:38 pm

Recent articles

Qwen3-4B-Thinking: "This is art - pelicans don't ride bikes!" - 10th August 2025
My Lethal Trifecta talk at the Bay Area AI Security Meetup - 9th August 2025
The surprise deprecation of GPT-4o for ChatGPT consumers - 8th August 2025

blocks 4 closures 22 objectivec 8 programming 156 syntax 2

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