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sx/examples/types/0120-types-tuple-element-assign.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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// Tuple element assignment + named tuples.
// - `t.0 = v` writes one element in place (was a known gap: the lvalue path
// looked the element up by name via getStructFields and left the pointee
// `.unresolved`; now it indexes the tuple positionally like the read path).
// - Named tuples `(x: T, y: U)` keep their field names through parsing and
// type resolution, so `t.x` reads/writes by name (and `.0` by position).
#import "modules/std.sx";
main :: () -> i32 {
// Positional element assignment.
a : (i32, string) = ---;
a.0 = 11;
a.1 = "x";
print("a: {} {}\n", a.0, a.1);
// Named tuple: write + read by name, and read by position.
p : (x: i32, y: string) = ---;
p.x = 22;
p.y = "y";
print("p: x={} y={} .0={}\n", p.x, p.y, p.0);
p.0 = 33; // position write reaches the same slot as .x
print("p.x after .0=33: {}\n", p.x);
0
}