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Re: About `cl-load-time-value'
From: |
Barry Margolin |
Subject: |
Re: About `cl-load-time-value' |
Date: |
Sat, 02 Feb 2013 12:04:45 -0500 |
User-agent: |
MT-NewsWatcher/3.5.3b3 (Intel Mac OS X) |
In article <mailman.18842.1359801098.855.help-gnu-emacs@gnu.org>,
Xue Fuqiao <xfq.free@gmail.com> wrote:
> In the trunk version of (info "(cl) Time of Evaluation"):
>
> In a compiled file, `cl-load-time-value' arranges for FORM to be
> evaluated when the `.elc' file is loaded and then used as if it
> were a quoted constant. In code compiled by `byte-compile' rather
> than `byte-compile-file', the effect is identical to
> `eval-when-compile'.
>
> Why is the code compiled by `byte-compile' and `byte-compile-file'
> being treated different? Can anybody help? Thanks.
Because when you use byte-compile, you're not creating a file, and "when
the .elc file is loaded" doesn't exist. So it evaluates it immediately
and puts the value in the compiled function.
--
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***