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Re: Lexical environment for functions?


From: Stefan Monnier
Subject: Re: Lexical environment for functions?
Date: Sat, 27 Dec 2014 19:10:09 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux)

> Does that mean that lexical environments exist only for value cells?

Yes, at least for the "native" lexical binding.

> Because it would seem convenient, if one has some
> Lisp-like presentation of a parse tree like XML, to just eval it with a
> number of function bindings in place.

Just like you could simulate the new (eval E ENV) form via
(eval `(lexical-let ,ENV ,E)), you can do the above with
(eval `(cl-flet FENV E)).


        Stefan



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