The article delves into Ruby’s top-level methods, specifically those belonging to the Kernel module, and the main scope’s connection to the Object class. It explains how seemingly “global” methods are actually private methods of the current object, originating from Kernel, and how user-defined global methods function in every object. The article addresses a legacy quirk between Kernel and Object, highlights quirks in metaprogramming, and provides insights into the main scope’s unique behavior. Additionally, it contrasts Ruby’s approach to global methods with other languages and emphasizes the importance of maintaining a clean top-level scope. The author concludes by summarizing key takeaways and urging support for Ukraine.
https://zverok.space/blog/2024-10-21-global_functions.html