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Re: [External] : Re: Which Elisp types are mutable?

From: Emanuel Berg
Subject: Re: [External] : Re: Which Elisp types are mutable?
Date: Mon, 05 Jul 2021 22:58:59 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

Drew Adams wrote:

>> Hm. If you change a variable's value... does that count as
>> "mutating the symbol"? If you change the binding (e.g.
>> by entering another scope or by leaving it)?
> (Changing a symbol's binding, with `let' etc. is more
> complicated. I mentioned global value.)
> If you look at a Lisp symbol as being an object with
> properties, then yes; changing its variable value changes
> the object - its mutable state.

You can change the symbol as a practically employed instance
but not as a concept...

underground experts united

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