all messages for Emacs-related lists mirrored at yhetil.org
 help / color / mirror / code / Atom feed
From: Kaushal Modi <kaushal.modi@gmail.com>
To: John Mastro <john.b.mastro@gmail.com>,
	 Help Gnu Emacs mailing list <help-gnu-emacs@gnu.org>
Subject: Re: Canonical way of marking a buf local var to be safe if nil/t?
Date: Thu, 12 May 2016 17:41:21 +0000	[thread overview]
Message-ID: <CAFyQvY2bKVW9Z0P3H9oaAjBdh_ZebgDofo-A-NHALT1vKEd46A@mail.gmail.com> (raw)
In-Reply-To: <CAOj2CQSVe5qp22mKhac4YW-X2Sr+9DnVzrqT1tNy-h_FaMqb_w@mail.gmail.com>

On Thu, May 12, 2016 at 1:39 PM John Mastro <john.b.mastro@gmail.com> wrote:

> Use `booleanp':
>
> booleanp is a compiled Lisp function in ‘subr.el’.
>
> (booleanp OBJECT)
>
> Return t if OBJECT is one of the two canonical boolean values: t or nil.
> Otherwise, return nil.
>

Thanks! I had a gut feeling that something basic like this had to be
already covered :)
-- 

-- 
Kaushal Modi


      reply	other threads:[~2016-05-12 17:41 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-12 17:32 Canonical way of marking a buf local var to be safe if nil/t? Kaushal Modi
2016-05-12 17:39 ` John Mastro
2016-05-12 17:41   ` Kaushal Modi [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CAFyQvY2bKVW9Z0P3H9oaAjBdh_ZebgDofo-A-NHALT1vKEd46A@mail.gmail.com \
    --to=kaushal.modi@gmail.com \
    --cc=help-gnu-emacs@gnu.org \
    --cc=john.b.mastro@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
Code repositories for project(s) associated with this external index

	https://git.savannah.gnu.org/cgit/emacs.git
	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.