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From: Michael Heerdegen <michael_heerdegen@web.de>
To: help-gnu-emacs@gnu.org
Subject: Re: Closures - do you understand them well?
Date: Thu, 19 Jan 2023 14:21:24 +0100	[thread overview]
Message-ID: <87h6wmacdn.fsf@web.de> (raw)
In-Reply-To: 87sfg8xcps.fsf@dataswamp.org

Emanuel Berg <incal@dataswamp.org> writes:

> Michael Heerdegen wrote:
>
> >>> The expansion of (push `(lambda () ,i) funs) is
> >>                                      ^^^
> >> It was the "poor human's closure" in pre-lexical times,
> >> after all.
> >
> > I wonder if that's a reason why lambda expressions where
> > originally made to be treated as functions.
>
> Why should the not be, aren't they anonymous functions?

Note I mean the expression, not the values they eval to.

The (unevaluated) expressions are just lists.  As values they are
"quoted lambdas" with all of the problems they come with.  The Elisp
interpreter still accepts them as function values.

Michael.




  reply	other threads:[~2023-01-19 13:21 UTC|newest]

Thread overview: 86+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-08 15:36 Closures - do you understand them well? Michael Heerdegen
2022-12-08 16:24 ` [External] : " Drew Adams
2022-12-08 17:30   ` Michael Heerdegen
2022-12-08 17:56     ` Drew Adams
2022-12-08 18:00       ` Drew Adams
2022-12-08 18:49       ` Michael Heerdegen
2022-12-08 19:35         ` Drew Adams
2022-12-10  4:51           ` Emanuel Berg
2022-12-08 19:45         ` Drew Adams
2022-12-08 19:06 ` Tassilo Horn
2022-12-08 19:53   ` Michael Heerdegen
2022-12-08 20:01     ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-08 20:49       ` Michael Heerdegen
2022-12-08 22:00         ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-08 22:25           ` [External] : " Drew Adams
2022-12-08 22:51             ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-10  2:34               ` Emanuel Berg
2022-12-09  5:03             ` Tomas Hlavaty
2022-12-10  2:35               ` Emanuel Berg
2022-12-10  2:29             ` Emanuel Berg
2022-12-10 16:56               ` Drew Adams
2022-12-15  8:25                 ` Emanuel Berg
2022-12-09  4:49           ` tomas
2022-12-09 19:40             ` Michael Heerdegen
2022-12-09 19:50               ` tomas
2022-12-09 20:55               ` Tassilo Horn
2022-12-09 21:21                 ` Michael Heerdegen
2022-12-09 21:31                   ` Emanuel Berg
2022-12-09 21:23                 ` Emanuel Berg
2022-12-10 11:40                   ` tomas
2022-12-12  1:18                     ` Michael Heerdegen
2022-12-12  5:16                       ` tomas
2022-12-12  6:09                         ` Michael Heerdegen
2023-01-18 12:13                           ` Emanuel Berg
2023-01-19 13:21                             ` Michael Heerdegen [this message]
2023-01-27 20:24                               ` Emanuel Berg
2023-01-28  0:44                                 ` Michael Heerdegen
2023-02-26 12:45                                   ` Emanuel Berg
2023-02-27  8:33                                     ` tomas
2023-02-28 10:13                                     ` Michael Heerdegen
2023-03-01 20:42                                       ` Emanuel Berg
2023-03-03 12:09                                         ` Michael Heerdegen
2023-03-02 11:08                                       ` Michael Heerdegen
2023-03-02 18:25                                         ` Emanuel Berg
2023-03-02 20:48                                           ` Emanuel Berg
2023-03-03  6:56                                             ` Eli Zaretskii
2023-03-03 12:19                                             ` Michael Heerdegen
2023-03-02 18:37                                         ` Emanuel Berg
2023-03-02 18:50                                         ` Emanuel Berg
2023-01-18 12:11                         ` Emanuel Berg
2022-12-22  4:00                     ` Emanuel Berg
2022-12-23  6:27                       ` tomas
2023-01-18 12:23                         ` Emanuel Berg
2022-12-10  4:46                 ` Emanuel Berg
2022-12-10  0:12               ` Michael Heerdegen
2022-12-10  9:34                 ` Tassilo Horn
2022-12-10 10:02                   ` Emanuel Berg
2022-12-10 16:28                   ` Mutation - do you understand it really? (was: Closures - do you understand them well?) Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-10 18:29                     ` Mutation - do you understand it really? Michael Heerdegen
2023-01-18 10:58                       ` Emanuel Berg
2023-01-19 13:59                         ` Michael Heerdegen
2023-01-19 17:47                           ` [External] : " Drew Adams
2022-12-11  2:24                   ` Closures - do you understand them well? Michael Heerdegen
2022-12-11  9:13                     ` Tassilo Horn
2022-12-10  2:26           ` Emanuel Berg
2022-12-10 17:20             ` [External] : " Drew Adams
2022-12-10 18:02               ` Iteration macros (was: [External] : Re: Closures - do you understand them well?) Stefan Monnier via Users list for the GNU Emacs text editor
2022-12-10 20:38                 ` Drew Adams
2023-01-18 11:10                   ` Emanuel Berg
2023-01-18 11:08                 ` Emanuel Berg
2022-12-21 23:53               ` [External] : Re: Closures - do you understand them well? Emanuel Berg
2022-12-09  3:43         ` Emanuel Berg
2022-12-09  4:01           ` Michael Heerdegen
2022-12-09  4:38             ` tomas
2022-12-09  5:37               ` Emanuel Berg
2022-12-09 16:55                 ` Michael Heerdegen
2022-12-10  4:52             ` Emanuel Berg
2022-12-08 19:44 ` Eric Abrahamsen
2022-12-08 20:11   ` Emanuel Berg
2022-12-08 20:53   ` Michael Heerdegen
2022-12-08 23:25     ` Michael Heerdegen
2022-12-09 16:50       ` Eric Abrahamsen
2022-12-09 18:48         ` Emanuel Berg
2022-12-09 19:25         ` Michael Heerdegen
2022-12-11 18:42           ` Eric Abrahamsen
2023-01-18 12:08             ` Emanuel Berg

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