From: Drew Adams <drew.adams@oracle.com>
To: "Garreau, Alexandre" <galex-713@galex-713.eu>
Cc: help-gnu-emacs@gnu.org
Subject: RE: `when' vs. `and' / `unless' vs `or'
Date: Tue, 16 Oct 2018 17:16:14 -0700 (PDT) [thread overview]
Message-ID: <db21ea5f-21db-4ddd-9b66-37163a7e7faa@default> (raw)
In-Reply-To: <871s8pl9t7.fsf@portable.galex-713.eu>
> (if (or cond cond) then else) than, canonically (and (not (and (or cond
> cond) then)) else) (not sure about a simplified version), which is the
> way to write it without an `if', as you said you didn’t use it if the
> condition was more than a single sexp.
As I (think I) said, I use (if (or cond cond) then else), if THEN is a single sexp.
If THEN is not a single step I don't bother to use
(if (or cond cond) (progn THEN1 THEN2...)) else).
---
BTW, for transforming sexps with `not', `and', and `or', for readability
or for performance reasons, I sometimes use `notandor.el'.
https://www.emacswiki.org/emacs/NotAndOr
Also, package `el-search.el' has similar possibilities (and many other
good things).
next prev parent reply other threads:[~2018-10-17 0:16 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-16 21:05 `when' vs. `and' / `unless' vs `or' Garreau, Alexandre
2018-10-16 22:13 ` Drew Adams
2018-10-16 22:38 ` Garreau, Alexandre
2018-10-16 23:21 ` Drew Adams
2018-10-17 0:02 ` Garreau, Alexandre
2018-10-17 0:16 ` Drew Adams [this message]
2018-10-17 1:25 ` Garreau, Alexandre
2018-10-17 1:58 ` Drew Adams
2018-10-17 9:00 ` Garreau, Alexandre
[not found] ` <mailman.2299.1539766826.1284.help-gnu-emacs@gnu.org>
2018-10-17 9:49 ` Emanuel Berg
2018-10-17 15:42 ` Michael Heerdegen
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