[saghm]

> I think the main reason it doesn't exist is that go had no generics. It'd need to be another custom-generic type (Future[T] basically), and it would make it harder to pass around, just like channels. But since channels are generally intrusively-added, they aren't part of the return signature, so they avoid that generic-return issue.

That's a good point I hadn't thought of! Naively I wan to say they could just "implicitly" make anything returned from a `go func` be passed to a channel and then have `go func` return a channel, but that would require doing a bit of type inference as well as deciding semantics for whether it's possible to get multiple values out of that return channel. It honestly seems like there are some interesting ideas here (e.g. having multiple yields out of a go routine that then get sent to an "output" channel, making a sort of generator-like thing, but I guess I'm not super surprised that Go didn't choose to go this route.