Files
sx/examples/0301-closures-fn-pointers.sx
agra 4e942b5373 test: migrate examples to XXXX-category-name layout + split expected streams
Rename all example tests/companions to the XXXX-category-test-name scheme
(per-category 100-blocks: basic 0010, types 0100, ... errors 1000,
diagnostics 1100, ffi 1200, ffi-objc 1300, ffi-jni 1400, vectors 1500,
platform 1600). Companions and dir/C fixtures move in lockstep with their
parent test; #import/#source/#include paths rewritten to match.

Expected output now lives in examples/expected/ (a sibling dir of the
tests) split into three streams per the new convention:
  <name>.exit / <name>.stdout / <name>.stderr  (+ optional <name>.ir)

run_examples.sh rewritten: scans examples/ and issues/ for an
expected/<name>.exit marker, captures stdout and stderr separately (no
more 2>&1), compares each stream + exit + optional IR snapshot.

Behavior validated unchanged: every renamed test reproduces its prior
merged output + exit (diffs limited to file paths/basenames embedded in
diagnostics + traces, which correctly reflect the new names). Suite:
292 passed, 0 failed. 50-smoke.sx split + issue relocation + docs follow
in subsequent commits.
2026-06-01 19:05:15 +03:00

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#import "modules/std.sx";
add :: (a: s32, b: s32) -> s32 { a + b; }
mul :: (a: s32, b: s32) -> s32 { a * b; }
apply :: (f: (s32, s32) -> s32, x: s32, y: s32) -> s32 {
f(x, y);
}
main :: () {
// Store function in variable
fp : (s32, s32) -> s32 = add;
print("fp(3,4) = {}\n", fp(3, 4));
// Reassign to different function
fp = mul;
print("fp(3,4) = {}\n", fp(3, 4));
// Pass function pointer as argument
print("apply(add,5,6) = {}\n", apply(add, 5, 6));
print("apply(mul,5,6) = {}\n", apply(mul, 5, 6));
}
// ** stdout **
//fp(3,4) = 7
//fp(3,4) = 12
//apply(add,5,6) = 11
//apply(mul,5,6) = 30