Ruby 4.0 Is Here. Why Is AI Still Writing Ruby 3.0?
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AI coding assistants are lagging behind Ruby's evolution, still generating outdated Ruby 3.0-era syntax even as Ruby 4.0 is available. Concrete examples include hash value omission syntax and anonymous block parameters, which modern Ruby supports but AI tools rarely produce. This creates a feedback loop: AI trains on old code, developers learn from AI, and modern Ruby features spread more slowly. The argument goes beyond style — it's about whether AI tools keep pace with the languages they claim to support, and whether relying on RuboCop to patch AI output is an acceptable standard.
Table of contents
Valid Ruby Isn’t EnoughThe Evidence Is EverywhereWhy Does This Matter?AI Is Creating a Feedback Loop“Just Use RuboCop”This Is Bigger Than Hash SyntaxRaising the StandardShare this:Related452 Impressions