How to Coalesce a Lambda Delegate

Question

I want to do this:

class Foo {

  static Func<string> sRunner;

  Func<string> _runner;

  public Foo(Func<string> runner){

    _runner = runner ?? sRunner ?? () => "Hey!";

  }
}

I get an "invalid expression" term on the lambda. Can that be fixed inline?

Answer 1

_runner = runner ?? sRunner ?? (() => "Hey!");