Yes, this will be familiar to people creating objects or classes that are intended to represent iterable collections. You do the same dynamic key syntax with a

Yes, this will be familiar to people creating objects or classes that are intended to represent iterable collections. You do the same dynamic key syntax with a class declaration or object literal, but use `Symbol.iterator` as the well-known symbol for the method. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/iterator https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...