rust/src/test/run-pass/expr-alt-generic-unique1.rs

// -*- rust -*-
type compare<T> = fn(~T, ~T) -> bool;

fn test_generic<@T>(expected: ~T, eq: compare<T>) {
    let actual: ~T = alt true { true { expected } };
    assert (eq(expected, actual));
}

fn test_box() {
    fn compare_box(b1: ~bool, b2: ~bool) -> bool { ret *b1 == *b2; }
    let eq = bind compare_box(_, _);
    test_generic::<bool>(~true, eq);
}

fn main() { test_box(); }