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

OpenAI's new open weight (Apache 2) models are really good - 5th August 2025
ChatGPT agent's user-agent - 4th August 2025
The ChatGPT sharing dialog demonstrates how difficult it is to design privacy preferences - 3rd August 2025

blocks 4 closures 22 objectivec 8 programming 156 syntax 2

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