Duck Typing

Ducks are types that need a minimum of fields

src/strings.duck

struct Person {
    name: String,
    age: Int,
    occupation: String,
}

fn f(param: { name: String, age: Int }) {
    std::io::println(param.name);
    std::io::println(param.age.to_string());
}

fn main() {
    f(Person { name: "John Smith", age: 29, occupation: "Programmer" }); // even though Person also has a field occupation, the duck doesn't care

    f({name: "John Programmer", age: 92, occupation: "Smith"}); // you can also create annonymous objects using the {} syntax

    const accepts_any: {} = 1; // since the empty duck doesn't impose any requirements, it is the any type

}