Re: Stepping Back: A Wealth Of Completion systems Re: [ELPA] New package: vertico

[Jean Louis]

* Philip Kaludercic <philipk@posteo.net> [2021-04-11 18:53]:
> Jean Louis <bugs@gnu.support> writes:
> 
> > One way I use for complex data structures is to have some kind of ID
> > and visual description, then by using the ID I fetch the data
> > structure later.
> 
> I'm not sure I completely understood your example. What do hash tables
> offer over lists of objects that can have a programmed
> representation?

Completing read supports hash tables, once representation candidate
has been selected one can then use the key to get value of some quite
different or very complex data structure.

(setq h (make-hash-table :test 'equal))
(puthash "United States" [("ABC" 30 t)] h)
(puthash "Australia" 2 h)
(puthash "United Kingdom" 3 h)

(message "%s" (gethash (completing-read "Choice: " h) h)) ⇒ "[(ABC 30 t)]"



-- 
Jean

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