Re: SETF for functions returning multiple values.

That answers my question, thank you!

> On 8 Jun 2026, at 19:55, John DeSoi <[email protected]> wrote:
> 
> CAPI uses this:
> 
> static-layout-child-geometry pinboard-object-or-pane => x, y, width, height
> 
> setf (static-layout-child-geometry pinboard-object-or-pane) (values x y width height) => x, y, width, height
> 
> 
> John DeSoi, Ph.D.
> 
> 
> 
>> On Jun 8, 2026, at 1:02 PM, Tim Bradshaw (as tfb at tfeb dot org) <[email protected]> wrote:
>> 
>> (setf (values p1 p2) <form-returning-two-values>) should work when p1 and p2 are places (the spec talks about this).
>> 
>> If F is a function returning two values, then you can't write a (SETF F) function for it, but you can write a setf expansion pretty easily.  So then you just can say (setf (f ...) (values v1 v2)).
>> 
>> I don't think I've seen this done elsewhere.  Does it strike people as reasonable?
>