From: Glenn Morris <rgm@gnu.org>
To: waterloo <waterloo2005@gmail.com>
Cc: 3752@emacsbugs.donarmstrong.com
Subject: bug#3752: 23.0.95; I can not understant a sentence in Intro to Emacs Lisp .
Date: Sat, 4 Jul 2009 22:30:29 -0400 [thread overview]
Message-ID: <19024.4165.105934.813448@fencepost.gnu.org> (raw)
In-Reply-To: <907065090907041913k35238898uca5ea25e90ab7da2@mail.gmail.com>
[Please use "reply to all".]
waterloo wrote (on Sun, 5 Jul 2009 at 10:13 +0800):
> yes,it is clearer . thanks
>
> In 11.1.2 An Example:`print-elements-of-list', I can not understand why
> there is a `nil' in the context .
This is explained at the end of the section:
Since the last expression in the function is the `while' loop, and
since `while' loops always return `nil', a `nil' is printed after the
last element of the list.
next prev parent reply other threads:[~2009-07-05 2:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-04 13:00 bug#3752: 23.0.95; I can not understant a sentence in Intro to Emacs Lisp waterloo
2009-07-04 23:11 ` Glenn Morris
2009-07-05 2:13 ` waterloo
2009-07-05 2:30 ` Glenn Morris [this message]
2009-07-05 2:47 ` waterloo
2009-07-06 0:58 ` Glenn Morris
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