rust/src/test/run-pass/sendfn-generic-fn.rs
2012-01-06 22:40:31 -08:00

37 lines
738 B
Rust

use std;
import std::comm;
import std::comm::chan;
import std::comm::send;
fn main() { test05(); }
type pair<A,B> = { a: A, b: B };
fn make_generic_record<A: copy, B: copy>(a: A, b: B) -> pair<A,B> {
ret {a: a, b: b};
}
fn test05_start(&&f: sendfn(&&float, &&str) -> pair<float, str>) {
let p = f(22.22f, "Hi");
log(debug, p);
assert p.a == 22.22f;
assert p.b == "Hi";
let q = f(44.44f, "Ho");
log(debug, q);
assert q.a == 44.44f;
assert q.b == "Ho";
}
fn spawn<A: copy, B: copy>(f: fn(sendfn(A,B)->pair<A,B>)) {
let arg = sendfn(a: A, b: B) -> pair<A,B> {
ret make_generic_record(a, b);
};
task::spawn {|| f(arg); };
}
fn test05() {
spawn::<float,str>(test05_start);
}