My first pony script

main.pony

interface Shouter
  fun shout(env: Env)

class Person
  let name: String
  var age: U8

  new create(name': String, age':U8) =>
    name = name'
    age = age'

  new birth(name': String) =>
    name = name'
    age = 0

  fun shout(env: Env) => 
    env.out.print(name)


actor Main
  new create(env: Env) =>
    shout_out(get_person(), env)

  fun get_person(): Person => Person.birth("Alon")

  fun shout_out(shouter: Shouter, env: Env) => shouter.shout(env)