Files
sx/examples/0307-closures-closure-contextual-params.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

29 lines
1.1 KiB
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// Step 2.5 — contextual typing for closure literals with N (heterogeneous)
// params. An untyped lambda `(a, b, c) => ...` takes each param's type
// positionally from the expected `Closure(T0, T1, T2) -> R` signature, in both
// assignment and argument position. (Previously only the first param — or
// all-same-typed params — resolved; trailing params silently defaulted to i64.)
#import "modules/std.sx";
// argument-position: lambda typed from the parameter's closure type.
apply2 :: (f: Closure(i64, string) -> i64, x: i64, s: string) -> i64 {
return f(x, s);
}
apply3 :: (f: Closure(i64, i64, string) -> i64, a: i64, b: i64, c: string) -> i64 {
return f(a, b, c);
}
main :: () -> i32 {
// assignment-position, mixed (i64, string) params — `b` is string.
cb : Closure(i64, string) -> i64 = (a, b) => a + b.len;
print("cb={}\n", cb(10, "hello")); // 10 + 5 = 15
// argument-position, 2 params.
print("r={}\n", apply2((a, b) => a + b.len, 10, "hello")); // 15
// argument-position, 3 params (i64, i64, string).
print("q={}\n", apply3((a, b, c) => a + b + c.len, 1, 2, "xyz")); // 1+2+3 = 6
0
}