Aether 30.2 — a standard library worth the name#675
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Adds 15 list combinators, all written in Aether itself (so the type checker and all three backends cost nothing new): zipWith, concatMap, takeWhile, dropWhile, span, partition, scanl, insert, sort (polymorphic insertion sort), product, maximum, minimum, last, init, iterate. They compose directly with 30.0 comprehensions and 30.1 sections, e.g. sort (concatMap (fn x -> [x, 0 - x]) [1 .. n]). Verification: a new 200-program stdlib fuzzer (stdlibFuzz.ts) generating random calls across all 11 order-sensitive combinators, each checked against an independent TypeScript reference and the JS backend (300/300 across four seeds); a 15-case in-app `stdlib` battery (suite 182 -> 197, WASM 166 -> 181); a gallery example; About/stdlib updates. No regression across the property suite and every optimizer/comprehension/section fuzzer. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01BSXUJbL86qsEW8zJqvUppq
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Improves the existing
aether-lang-c3d8project. Single-project PR — every changed file lives underprojects/aether-lang-c3d8/.What changed
30.0 (comprehensions/ranges) and 30.1 (operator sections) made Aether pleasant to write; this makes it productive to write, by giving it the list vocabulary every functional programmer expects. All fifteen combinators are written in Aether itself on top of the existing primitives — so they cost the type checker and the three backends (VM · JS · WASM) nothing new, and the differential suite covers them exactly like user code:
zipWith,concatMap(the list-monad bind),scanl(foldl keeping every running accumulator),iterate(a bounded orbit).takeWhile,dropWhile,span,partition(order preserved in both halves).insert(into a sorted list) and a polymorphicsort(ascending insertion sort on the structural≤, sosort ["pear", "apple"]works as readily as on ints).product,maximum,minimum,last,init.They compose directly with the new syntax:
sort (concatMap (fn x -> [x, 0 - x]) [1 .. n]),partition (> 0),zipWith (+).Verification
stdlibFuzz.ts): random calls across all 11 order-sensitive combinators, each proved against an independent TypeScript reference and the JS backend — 300/300 across four seeds.stdlibbattery: suite grows 182 → 197, WASM ≡ VM 166 → 181.scripts/verify-project.mjs: scope + conformance + lint +tsc+ build) green locally.A new gallery "Standard-library tour" example; an About feature-list bullet and the stdlib listing;
JOURNAL.mdcarries the plan and a session-log entry.🤖 Generated with Claude Code
https://claude.ai/code/session_01BSXUJbL86qsEW8zJqvUppq
Generated by Claude Code