module main

fn test_main() {
    my := MyError{
        path: 'err msg'
    }
    p := my.to[string](|m| m.path)
    p2 := my.to_str(|m| m.path)
    println(p)
    println(p2)

    assert p == p2
}

struct MyError {
pub:
    path string
}

fn (e &MyError) msg() string {
    return e.path
}

fn (e &MyError) code() int {
    return 1
}

fn (e &MyError) to[T](func fn (MyError) T) T {
    return func(e)
}

fn (e &MyError) to_str(func fn (MyError) string) string {
    return func(e)
}