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#2044: Spooky Programming
The post explains how to turn a simple JavaScript list into a fully‑reactive data structure for use in web UIs: by extending an array with a Proxy that watches get/set operations and all mutating methods (push, pop, shift, unshift, splice, sort, reverse, fill, copyWithin), you can expose a subscribe() API so code is notified of changes. To efficiently update the DOM you compute a diff—adding, deleting, or moving items—and then apply a patch that updates only those parts of the page that actually changed. The author encourages using AI to generate boilerplate and stresses that mastering reactive programming is both powerful and elegant, turning ordinary developers into “sorceresses” who can build lightweight, maintainable JavaScript applications.
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