Files
sx/examples/0021-basic-expression-bodied-fn.sx
agra d8076b9333 lang: rename signed integer types sN -> iN
Surface rename of the signed integer family: s1..s64 become i1..i64
(u1..u64, usize, isize unchanged). 'string' keeps the s-prefix arm in
name classification; width parsing moves to the i-prefix arm next to
isize.

Internal TypeId tags follow the surface (.s8/.s16/.s32/.s64 ->
.i8/.i16/.i32/.i64), as do mono-key mangle fragments (ptr_i64,
tu_i64_bool) and all display/diagnostic formatting (i{d}).

Migrated in the same sweep: stdlib + examples + issue repros + FFI C
companions (shared symbol names like ffi_id_i64), expected
stdout/stderr/ir snapshots, specs.md, readme.md, CLAUDE.md/AGENTS.md,
implementation_plan.md, docs/, issue writeups. Vendored stb_image and
historical flow state left untouched.

zig build test: 426/426; examples suite: 595/595.
2026-06-12 09:31:53 +03:00

37 lines
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// M1.0 — expression-bodied function declarations.
//
// sx's `=>` body form (already used for lambdas) extends to
// top-level and struct-member function declarations:
//
// name :: (params) -> RetType => expr;
//
// Pins three positions: module-top, struct method, niladic.
#import "modules/std.sx";
double :: (x: i32) -> i32 => x * 2;
sum :: (a: i32, b: i32) -> i32 => a + b;
answer :: () -> i32 => 42;
Point :: struct {
x: i32;
y: i32;
total :: (self: *Point) -> i32 => self.x + self.y;
scaled :: (self: *Point, by: i32) -> i32 => (self.x + self.y) * by;
}
main :: () -> i32 {
print("double: {}\n", double(7));
print("sum: {}\n", sum(3, 4));
print("answer: {}\n", answer());
p := Point.{ x = 10, y = 20 };
print("total: {}\n", p.total());
print("scaled: {}\n", p.scaled(3));
0
}