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Rebuild the API Reference around one page per symbol and richer, verified content.
Pages & navigation
- One HTML page per symbol (kw-*, type-*, phase-*, screen-*, fn-*, annot-*, op-*)
instead of a single scrolling page; namespace overview pages (ns-screen …
ns-color) and a searchable index (api.html) with client-side fuzzy search.
- Sticky-header scroll offset (scroll-margin) so a jumped-to entry/param/color is
never hidden, plus a flash highlight on the scrolled-to target.
Deep linking in every snippet & example
- Namespace members split: `Screen`→namespace page, `fill_rectangle`→method page;
`Color`→palette page, `Charcoal`→its swatch — separately.
- Named arguments (`width:`) link to that parameter's anchor on the method page.
- Hover any token for a summary card built from the real API data (symbols.json).
Content & coverage
- Full authoritative surface documented from the compiler: every keyword, type,
the 6 phases (Start/Input/FixedUpdate/Update/LateUpdate/Render, each its own
page), all 22 annotations, namespace methods with parameter docs, builtins,
the world_* reflection ABI, networking, operators — 155 symbols.
- Longer, clearer explanations; "model"/"model instance" terminology, not "entity";
descriptive identifiers in every example (Position{column,row}, Velocity{delta_x,
delta_y}, Health{current,maximum}, Player/Enemy) — no Pos/Seg/x/dx.
- Accuracy fixes from compiler ground-truth: world_count() takes no arg,
world_query_next(property, cursor) arg order, event fields bind by name; dropped
`when` and `module` (not in the self-hosted parser).
Tooling
- inventory.json + check.py: coverage guard (every symbol has a page), duplicate-
token guard, and broken-link guard — fail CI so docs can't drift.
- validate.py: compiles every ```ludic example against bin/ludicc (158 compile).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
27 lines
880 B
Markdown
27 lines
880 B
Markdown
---
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id: fn-len
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name: len
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category: builtins
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kind: builtin
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tokens: len
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sig: len(x) -> int
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tip: The number of elements in a slice, or the byte length of a string.
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order: 5
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---
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Returns the length of its argument: the element count of a slice, or the byte length of a string. Use it to iterate a slice with <code>for index in 0 .. len(items)</code>, to check whether a collection is empty, or to compute string slice bounds such as trimming a suffix. It reads the current length, so after you <code>push</code> onto a slice the value it returns grows accordingly. For strings, note it counts bytes, not visual characters.
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Parameters:
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- `x` — a slice or string to measure
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```ludic
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program CountEnemies {
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handler ReportCount phase Start {
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let wave_sizes = new []int
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push(wave_sizes, 3)
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push(wave_sizes, 5)
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push(wave_sizes, 8)
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print(len(wave_sizes))
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}
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}
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```
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