Interview
summary
History traces APL back to Ken Iverson and shows how its notation directly inspires modern functional techniques, with concrete examples of tacit programming and point‑free composition in APL and relatives (APL, j, k, q, BQN). Map/reduce appears as a single-symbol reduce in these languages, enabling dense, expressive code that maps well to machine vector architectures for measurable speed and energy gains. The claim that K or related toolchains could run on a wristwatch is floated as an example of extreme code efficiency and resilience.
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chapters (4)
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