/**
 * Copyright (C) 2015-2023 Developer Sam.
 * @demo https://samlang.io/demo
 * @github https://github.com/SamChou19815
 * @discord https://discord.gg/WQQUjspZJa
 * @resume https://developersam.com/resume.pdf
 */
class Pair<A, B>(val a: A, val b: B)
class List<T>(Nil(unit), Cons(Pair<T, List<T>>)) {
  function <T> of(t: T): List<T> =
    List.Cons(Pair.init(t, List.Nil<T>({})))
  method cons(t: T): List<T> =
    List.Cons(Pair.init(t, this))
}
class Developer(
  val github: string,
  val projects: List<string>,
) {
  function sam(): Developer = {
    val github = "SamChou19815";
    val projects = List.of("samlang").cons("...");
    Developer.init(github, projects)
  }
}
class Main {
  function main(): Developer = Developer.sam()
}