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sx/examples/packs/0512-packs-pack-runtime-index.sx
agra 66bdc70bf1 test: group examples into per-category folders
Move examples/*.sx and their expected/ snapshots into per-category
subfolders (examples/<category>/...). Folder = leading filename token,
with ffi-objc/ffi-jni kept whole; filenames are unchanged. The corpus
runner and LSP sweep now discover each category's expected/ dir, while
issues/ stays flat. Example 1058's repo-root-relative companion import
is made file-relative. Path strings embedded in 164 snapshots were
regenerated (path-only changes). Test-layout docs in CLAUDE.md updated.
2026-06-21 14:41:34 +03:00

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// Variadic heterogeneous type packs — Step 2.6: indexing a pack with a
// RUNTIME index is a compile error.
//
// Per locked Decision 1, a pack is comptime-only and has NO runtime
// representation — so `args[i]` is valid only when `i` is a compile-time
// constant (a literal, or an `inline for` cursor). A runtime index (here a
// `while`-loop counter) must produce a clear diagnostic, not the confusing
// "unresolved 'args'" the slice-index fall-through used to give. To walk a
// pack, use `inline for 0..args.len (i) { ... }`, which unrolls so each
// `args[i]` is a comptime index.
#import "modules/std.sx";
count_anys :: (..$args) -> i64 {
total : i64 = 0;
i : i64 = 0;
while i < args.len {
x : Any = args[i]; // ERROR: runtime index into a comptime-only pack
_ = x;
total = total + 1;
i = i + 1;
}
return total;
}
main :: () -> i32 {
print("{}\n", count_anys(10, "hi", 2.5, true));
return 0;
}