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Comp's Tags: When Keywords Become Extensible Hierarchies

Picture extending true and false with 'maybe' without breaking a thing. Comp's tags do just that, weaving hierarchies into every corner of the language.

DevTools Feed Apr 03, 2026 3 min read
Visual diagram of Comp language tag hierarchy extending bool with maybe

⚡ Key Takeaways

  • Comp tags turn keywords into extensible hierarchies, extending builtins like bool without breakage.
  • They eliminate stringly-typed enums, powering units, shapes, and parameter inference natively.
  • Dual role as shapes and values enables powerful, discoverable code organization.
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#Comp language #hierarchical namespaces #language design #language features #programming tags

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Originally reported by dev.to

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