struct Foo {
    some_data: i32,
}

impl Foo {
    fn some_func(&self) {
        println!("{}", self.some_data)
    }

    fn run<T, F>(&self, data: &T, func: F)
        where F: Fn(&T) + 'static
    {
        func(data);
    }

    fn exec(&self) {
        self.run(self, &Foo::some_func);
    }
}


fn main() {
    let foo = Foo { some_data: 0x666 };
    foo.exec();
}