Re: lisp: scoping vars in repetitive defuns

[John Kitchin <jkitchin@andrew.cmu.edu>]

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I played with a similar idea of converting a plist to something you can
call to access values at
https://kitchingroup.cheme.cmu.edu/blog/2017/04/16/A-callable-plist-data-structure-for-Emacs/.
It did end up as a macro, but no eval required. It never made it past that
post, but it might have an application here.

I am not sure why you have to loop over everything in a let statement
though. you can use something like https://github.com/nicferrier/emacs-kv to
get all the keys an loop over those to do what you want, or you can just
use cl-loop to do that. So, unless you are defining new variables for
readability you shouldn't need to let bind anything that is in the plist,
only new things that are derived from it.

John

-----------------------------------
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu



On Wed, Sep 18, 2019 at 5:45 PM Adam Porter <adam@alphapapa.net> wrote:

> Joost Kremers <joostkremers@fastmail.fm> writes:
>
> > On Wed, Sep 18 2019, Matt Price wrote:
> >> Is thre away to do that kind of destructuring bind -- which
> >> binds *everything* in the plist, without knowing the symbol names in
> >> advance? that would be really great.
> >
> > let-alist perhaps?
>
> Well, let-alist is for alists, not plists.  ;) But anyway, it's a macro,
> and it does require knowing keys at compile time.  -let is a good
> alternative for plists and other maps.
>
>
>

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