rust/src/test/run-pass/fun-call-variants.rs

// -*- rust -*-
fn ho(f: fn(int) -> int ) -> int { let n: int = f(3); ret n; }

fn direct(x: int) -> int { ret x + 1; }

fn main() {
    let a: int =
        direct(3); // direct
    let b: int = ho(direct); // indirect unbound

    let c: int =
        ho(bind direct(_)); // indirect bound
    assert (a == b);
    assert (b == c);
}