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AI-generatedDfn lexical closures versus tradfn debuggability when error guards must cross paradigm boundaries
A new Dyalog APL codebase will mix direct functions (dfns) and traditional functions (tradfns). The team must adopt a single error‑handling convention and retain the ability to suspend execution during development. Dfns capture surrounding namespace state lexically at definition time, enabling closures and tail‑call optimization, but their :: error guards on
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