On Fri, Aug 11, 2023 at 3:46 PM Frederick Virchanza Gotham via
Std-Proposals <std-proposals_at_[hidden]> wrote:
> But unrelated to NRVO, the function 'PutRetvalIn' which I describe in my paper achieves something that isn't currently possible in the language. We /should/ be able to put a function's return value on the heap or inside a global std::optional.

But there already is. This:

```
PutRetvalIn(p)(Func)(5, 6.3, 8.4f);
```

Is functionally equivalent to:

```
p = new(p) mutex(Func(5, 6.3, 8.4f));
```

There's no equivalent for `optional`, but that's nonsensical.