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sx/examples/packs/0533-packs-pack-tuple-materialize.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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// Feature 1 — materialize a tuple from a pack via `(..xs.method)` (Decision 2:
// a pack is stored by materializing a tuple). `(..xs.get)` projects `get` over
// the pack and collects the results into a real tuple value, which can then be
// stored, indexed, and (for `Box(T)`) is heterogeneous per position.
#import "modules/std.sx";
Box :: protocol(T: Type) {
get :: (self: *Self) -> T;
}
IntCell :: struct { v: i64; }
StrCell :: struct { s: string; }
impl Box(i64) for IntCell { get :: (self: *IntCell) -> i64 => self.v; }
impl Box(string) for StrCell { get :: (self: *StrCell) -> string => self.s; }
snapshot :: (..xs: Box) -> void {
t := (..xs.get); // tuple (i64, string) materialized from the pack
print("0={} 1={}\n", t.0, t.1);
}
main :: () -> i32 {
snapshot(IntCell.{ v = 42 }, StrCell.{ s = "hi" });
snapshot(StrCell.{ s = "x" }, IntCell.{ v = 7 }); // order swapped → (string, i64)
0
}