File: foo.rs

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file content (13 lines) | stat: -rw-r--r-- 247 bytes parent folder | download | duplicates (13) 
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fn identity(a: &u32) -> &u32 { a }

fn print_foo(f: &fn(&u32) -> &u32, x: &u32) {
    print!("{}", (*f)(x));
}

fn main() {
    let x = &4;
    let f: fn(&u32) -> &u32 = identity;

    // Didn't print 4 on optimized builds
    print_foo(&f, x);
}