help-gnu-emacs
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: replace element in list


From: Stefan Monnier
Subject: Re: replace element in list
Date: Thu, 22 Nov 2018 08:19:49 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

> I want to share and know if there is a better way (more efficient or
> clearer) to replace something within a list (I don't know LISP).

My suggestion is to not do it:
- if you do it by modifying the list in place, it means you're using
  nasty side-effects, which are better avoided when possible
  (especially with lists).
- if you want to do it without side-effects, your operation will
  inevitably be algorithmically inefficient because a list is not
  designed for that.


-- Stefan




reply via email to

[Prev in Thread] Current Thread [Next in Thread]