Shared via Pony Playground (https://playground.ponylang.io/?gist=76f9eb722e5bb220476e93abc78070d4)

main.pony

actor Main
  let foo: (Foo|None)
  new create(env: Env) =>
    try
      foo = Foo()?
    else
      env.err.print("Something went wrong!")
      env.exitcode(1)
    end
    
  fun later() =>
    match foo  // ugly, unnecessary
    |
      let f: Foo => other()
    |
      None => None   // this will never match
    end
    
  fun other() => None

class Foo
  new create() ? => None