Re: How to use a symbol and its value to create alist?

[Ian Zimmerman]

On 2015-08-11 21:52 +0800, Navy Cheng wrote:

> (setq a 1)
> (setq b 2)
> (setq c 3)
> 
> How can I a alist, like:
> ((a . 1) (b . 2) (c .3))
> 
> The value of a, b and c may change, so don't do this like
> (setq tree ((a . 1) (b . 2) (c .3)))

That's a strange question.  Why would you want such a list, how would
it be useful?  To look up the value a a symbol, you just use it, for
example: 

(setq a 1)

...

(message "a=%d" a)

=> a=1

In some special situations where a symbol is not evaluated (such as when
playing with macros) you may need to use symbol-value.  But I'm guessing
you're not at that point.

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