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From: 2QdxY4RzWzUUiLuE@potatochowder.com
To: help-gnu-emacs@gnu.org
Subject: Re: The function naming convention used by Emacs.
Date: Sun, 26 Sep 2021 04:27:05 -0700	[thread overview]
Message-ID: <YVBZCeFsllXi1qku@scrozzle> (raw)
In-Reply-To: <CAGP6POJ3FyyVWmu3wZ7V84dODaSiBrafHvnSLE1f-Nt-ZRMqfw@mail.gmail.com>

On 2021-09-26 at 19:05:36 +0800,
Hongyi Zhao <hongyi.zhao@gmail.com> wrote:

> As far as function names are concerned, are there some established
> conventions used by Emacs? For example, I noticed that there are so
> many functions in Emacs named by the suffix `-p', say,
> `file-exists-p', `ht-equal-p', and so on. But I still can't figure out
> the meaning of this suffix. Any tips will be appreciated.

The -p suffix is short for "predicate"; so file-exists-p is true if and
only if the argument names and existing file.  I learned of that
convention from Common Lisp; I don't know the entire history.



  reply	other threads:[~2021-09-26 11:27 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-26 11:05 The function naming convention used by Emacs Hongyi Zhao
2021-09-26 11:27 ` 2QdxY4RzWzUUiLuE [this message]
2021-09-26 11:49   ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-09-26 11:50   ` Hongyi Zhao
2021-09-26 11:48 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-09-26 12:18   ` Hongyi Zhao
2021-09-26 13:34     ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-09-26 17:04 ` [External] : " Drew Adams
2021-09-27  5:46   ` Hongyi Zhao
2021-09-27 14:53     ` Drew Adams
  -- strict thread matches above, loose matches on Subject: below --
2021-09-26 13:32 Pierpaolo Bernardi
2021-09-26 13:35 ` Emanuel Berg via Users list for the GNU Emacs text editor

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