[alexandria-devel] [PATCH] PROG1-LET

[Benjamin Saunders]

On Sun, Apr 08, 2012 at 12:33:55PM +0200, Tamas K Papp wrote:
> I usually ... implement this pattern using the ANAPHORA
> library. Your macro would of course be a better solution if, for
> some reason, one doesn't want to use an anaphoric macro

Yeah, that's the idea. As with all the other macros in bindings.lisp,
it's just a cleaner version of the same functionalith ANAPHORA
provides. I took the presence of when-let and if-let to imply that
this was established as a reasonable thing for alexandria to do.

> but IMO it would be cleaner to...

I agree that the multiple binding use-case is a bit weak, but opted to
support it for the sake of consistency with the other *-let macros
already in alexandria. Returning them as multiple values is an
interesting way to develop that into something more useful. I'm not
sure I can see that being taken advantage of often, but it doesn't
detract from the common use case, so I see no reason not to support it.
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