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Re: The function ‘cl-set-difference’ might not be defined at runtime


From: Stefan Monnier
Subject: Re: The function ‘cl-set-difference’ might not be defined at runtime
Date: Tue, 14 Apr 2020 16:21:34 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

> Yes, `(require 'cl-lib)` at top level placates Flycheck.  But for the
> last drop of efficiency, I tried to `(require 'cl-lib)` inside the body
> of the function that calls cl-set-difference, and put at the top level:

FWIW, I don't think it will be more efficient.

> (declare-function cl-set-difference "cl-seq" (list1 list2 &rest cl-keys))
> That does not placate Flycheck though.  Do you know why?  The 0.08s of
> extra loading time will not kill anyone for sure (specially since this
> is code for personal use and even I will use it only rarely), but if
> there is an easy way to avoid it, I would like to know.

(require 'seq) and then use `seq-difference`?


        Stefan




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