docs: add a feature carousel to the landing page#157
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Add a carousel to the docs landing page that cycles through short, distinctive-feature examples — prototype objects, multi-field selection, copy-on-write, null tracking, optional parens, expression-oriented case, and built-in assert — inspired by the feature reel on rhombus-lang.org. Each slide renders as a regular \dang-literate block, so it reuses the existing snippet template, styling, baked build-time output, and client-side editor rather than introducing a parallel mechanism. Slides must stay independent — each redeclares its own types — so a slide evaluates in its own fresh session and carries data-dang-literate-chain; playground.js now scopes a literate chain to its nearest such ancestor, defaulting to the whole page as before. carousel.js is progressive enhancement only: a tab strip, prev/next controls, and arrow keys over the slides, which otherwise stack and read fine without JavaScript. Signed-off-by: Alex Suraci <[email protected]>
Deploying dang with
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| Latest commit: |
6f2cc2a
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| Status: | ✅ Deploy successful! |
| Preview URL: | https://e67a201d.dang-3kk.pages.dev |
| Branch Preview URL: | https://docs-feature-carousel.dang-3kk.pages.dev |
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Adds a feature carousel to the docs landing page — a quick reel cycling through Dang's distinctive features, inspired by the one on rhombus-lang.org.
What's in it
Seven slides, each a short example shown with its real, build-time-evaluated output:
typedeclares a type and its constructor.{{ … }}(against a schema, one query with fields resolved in parallel)StringvsString!with flow narrowingcaseyields a valueassertwith no frameworkReuse over reinvention
Each slide renders as a regular
\dang-literateblock, so it reuses the existing snippet template, styling, baked output, and client-side editor — the slides are editable and runnable, and a broken example fails the docs build like any other literate block.The only evaluation-side change is independence: slides each redeclare their own types, so they can't share the page's literate session. A slide evaluates in its own fresh session and carries
data-dang-literate-chain, andplayground.jsnow scopes a literate chain to its nearest such ancestor, defaulting to the whole page (existing pages are unaffected).carousel.jsis pure progressive enhancement — a tab strip of feature names, prev/next controls, and arrow keys — over slides that otherwise stack and read fine without JavaScript.Notes for review
Preview with
cd docs && ./build.sh -s 3001.