ludic/docs/language/control/kw-for.md
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docs(api): per-symbol pages, fuzzy search, deep token linking, hover cards
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>
2026-08-29 17:53:22 +03:00

1.3 KiB

id name category kind tokens sig tip order
kw-for for … in control keyword for for name in a .. b { … } Range loop — iterate the half-open range from a up to but not including b. 2

The numeric for … in loop walks the half-open range a .. b, running the body for each value from a up to but not including b. Each pass binds a fresh, immutable name — it is not a reusable variable and cannot be reassigned inside the body — which makes the loop easy to reason about. Both bounds are ordinary expressions, so ranges built from constants like 0 .. GRID_WIDTH read cleanly. The same for … in keyword also drives ECS query loops (for (…) in query […]); this page is the numeric range form. Use break and continue to exit early or skip to the next value.

program Grid {
  const GRID_WIDTH: int = 20
  const GRID_HEIGHT: int = 15
  const TILE_SIZE: int = 16

  handler DrawWorld phase Render {
    Screen.clear(Color.MidnightBlue)
    for row in 0 .. GRID_HEIGHT {
      for column in 0 .. GRID_WIDTH {
        var tile_color = Color.MidnightBlue
        if (column + row) % 2 == 0 { tile_color = Color.White }
        Screen.fill_rectangle(x: column * TILE_SIZE, y: row * TILE_SIZE, width: TILE_SIZE, height: TILE_SIZE, color: tile_color)
      }
    }
    Screen.show()
  }
}