>
> Lastly, I'd say that function signatures which currently accept a
> callback also don't *have* to change. In fact, there may be some value in
> allowing both styles (existing callbacks, and my new proposed style) to
> co-exist in the same function, giving the calling developer the freedom to
> choose.
>
Another example of this would be existing interfaces in JavaScript which
accept callbacks, like `setTimeout`. Those interfaces could be extended to
also be aware of this new behavior, without changing their function
signature at all:
function foo() {
console.log("foo rocks");
}
setTimeout(foo, 1000);
// or
setTimeout(null, 1000) @ foo();
--Kyle
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