From: Emanuel Berg <embe8573@student.uu.se>
To: help-gnu-emacs@gnu.org
Subject: Re: run-with-timer does not display message
Date: Sat, 19 Jul 2014 19:43:16 +0200 [thread overview]
Message-ID: <878unputvv.fsf@debian.uxu> (raw)
In-Reply-To: mailman.5702.1405789759.1147.help-gnu-emacs@gnu.org
Stefan Monnier <monnier@iro.umontreal.ca> writes:
>> I don't think Stefan meant backtick-type of quoting.
>> He meant this:
>>
>> M-: (run-with-timer 5 nil '(lambda ...
>
> Indeed.
Yes, of course I understood that because that was the
only quoting going on. That's why I supplied the
`equal' example that seems to indicate that quoting and
backticking (without commas) are equal (?).
Here is what I remember from this - I'm shooting from
the holster (a bit) here, feel free to correct
misconceptions/-assumptions:
OK, dynamic scope is when everything is looked up only
when needed, that's the dynamic (time) thing to it,
because things can be different at different
times. This is what makes the whole dynamic environment
in Emacs possible which, by comparison, makes even cool
languages like C a pain to work with for large,
interactive systems...
Lexical scope is when things are encoded once and then
they don't change because they are passed around as
they are. Because they can be encoded different things
it makes sense calling this lexical (because the value
is simply read, not looked up) and not "static".
This corresponds to an extent to
call-by-value/call-by-reference, and in compiled
languages there are super-advanced use of pointers and
heap data structures to make up for the lack of "the
dynamic".
Questions:
1. How do I put Emacs in lexical mode? Do I do that
temporarily (?!) with a Elisp block around certain
code? Or is it a global option? If so, won't that
screw up everything else in unpredictable ways?
Also, isn't there some hybrid mode where this gets
sorted out in the background?
2. Interestingly, what I can see, my method, with
backticks and commas, isn't that "lexical" - because
then, there, the actual values are inserted?
--
underground experts united
next prev parent reply other threads:[~2014-07-19 17:43 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-15 13:47 run-with-timer does not display message Matthias Pfeifer
2014-07-15 13:53 ` Thorsten Jolitz
2014-07-18 16:26 ` Stefan Monnier
[not found] ` <mailman.5631.1405701027.1147.help-gnu-emacs@gnu.org>
2014-07-18 21:34 ` Emanuel Berg
2014-07-19 15:09 ` Sebastian Wiesner
2014-07-19 15:27 ` Eli Zaretskii
2014-07-19 17:08 ` Stefan Monnier
2014-07-19 18:04 ` Drew Adams
[not found] ` <mailman.5702.1405789759.1147.help-gnu-emacs@gnu.org>
2014-07-19 17:43 ` Emanuel Berg [this message]
2014-07-19 18:12 ` Stefan Monnier
2014-07-19 20:06 ` Lexical and Dynamic Scope Robert Thorpe
2014-07-20 12:15 ` run-with-timer does not display message Sebastian Wiesner
2014-07-21 13:26 ` Stefan Monnier
[not found] ` <mailman.5708.1405793578.1147.help-gnu-emacs@gnu.org>
2014-07-20 19:27 ` Emanuel Berg
2014-07-21 13:29 ` Stefan Monnier
[not found] ` <mailman.5813.1405950328.1147.help-gnu-emacs@gnu.org>
2014-07-21 22:17 ` Emanuel Berg
2014-07-24 8:25 ` Stefan Monnier
[not found] ` <mailman.5754.1405858540.1147.help-gnu-emacs@gnu.org>
2014-07-20 19:37 ` Emanuel Berg
2014-07-20 20:11 ` Drew Adams
2014-07-20 21:28 ` dynamic and lexical scope, attempted summary with example (was: Re: run-with-timer does not display message) Emanuel Berg
2014-07-21 4:44 ` dynamic and lexical scope, attempted summary with example Thien-Thi Nguyen
2014-07-21 6:36 ` Thorsten Jolitz
[not found] ` <mailman.5796.1405924598.1147.help-gnu-emacs@gnu.org>
2014-07-21 14:08 ` Emanuel Berg
2014-07-21 9:23 ` Michael Heerdegen
[not found] ` <mailman.5792.1405917701.1147.help-gnu-emacs@gnu.org>
2014-07-21 13:36 ` Emanuel Berg
2014-07-21 17:07 ` Thien-Thi Nguyen
[not found] ` <mailman.5826.1405962249.1147.help-gnu-emacs@gnu.org>
2014-07-21 22:11 ` Emanuel Berg
[not found] ` <mailman.5805.1405934637.1147.help-gnu-emacs@gnu.org>
2014-07-21 14:02 ` Emanuel Berg
[not found] ` <mailman.5686.1405782584.1147.help-gnu-emacs@gnu.org>
2014-07-19 17:49 ` run-with-timer does not display message Emanuel Berg
[not found] ` <mailman.5455.1405432451.1147.help-gnu-emacs@gnu.org>
2014-07-15 15:35 ` Emanuel Berg
[not found] <mailman.5454.1405432029.1147.help-gnu-emacs@gnu.org>
2014-07-15 14:34 ` Joost Kremers
2014-07-15 15:18 ` jduthen
2014-07-15 15:20 ` Joost Kremers
2014-07-15 15:40 ` Drew Adams
[not found] ` <mailman.5461.1405438875.1147.help-gnu-emacs@gnu.org>
2014-07-15 15:52 ` Joost Kremers
2014-07-15 15:57 ` Emanuel Berg
[not found] ` <mailman.5463.1405440423.1147.help-gnu-emacs@gnu.org>
2014-07-15 16:07 ` Emanuel Berg
2014-07-15 16:12 ` Joost Kremers
[not found] ` <mailman.5466.1405442248.1147.help-gnu-emacs@gnu.org>
2014-07-16 1:12 ` Joost Kremers
2014-07-17 10:03 ` Matthias Pfeifer
[not found] ` <<slrnlsakmh.a5k.joost.m.kremers@j.kremers4.news.arnhem.chello.nl>
2014-07-15 16:37 ` Drew Adams
[not found] ` <<slrnlsaji8.a5k.joost.m.kremers@j.kremers4.news.arnhem.chello.nl>
2014-07-15 16:06 ` Drew Adams
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=878unputvv.fsf@debian.uxu \
--to=embe8573@student.uu.se \
--cc=help-gnu-emacs@gnu.org \
/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.