From: Jean Louis <bugs@gnu.support>
To: help-gnu-emacs@gnu.org
Subject: Example use of macro to minimize and generalize the code (2)
Date: Tue, 1 Jun 2021 00:45:43 +0300 [thread overview]
Message-ID: <YLVZB8VVqvUm/VLr@protected.localdomain> (raw)
In-Reply-To: <87a6oad81r.fsf@zoho.eu>
* Emanuel Berg via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org> [2021-05-31 22:21]:
> What kind of things or problems could or should you solve with
> macros?
Another good use of a macro is with the database application where:
- database user can define the type of the object, for example,
database user "joe" could create new type named "bc evaluation"
- the type of the object is accessible to user only, not to other
users;
- user edits the type and declares that the value should be evaluated
with the external program named "bc". Such declaration could be
simple "bc" instead of complex programming
- macro generates a function specific for that user who needs to see
the output from "bc evaluation"
Thus it becomes a program that develops itself further based on
users's input.
--
Jean
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next prev parent reply other threads:[~2021-05-31 21:45 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-30 22:48 Why is defun not executed during load-file? Drew Adams
2021-05-30 22:57 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-31 2:05 ` [External] : " Drew Adams
2021-05-31 2:56 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-31 5:05 ` Drew Adams
2021-05-31 19:20 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-31 19:47 ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-05-31 20:09 ` Marcin Borkowski
2021-06-07 2:19 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-06-07 6:27 ` Jean Louis
2021-06-07 14:18 ` FW: " Drew Adams
2021-06-07 14:41 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-31 21:40 ` Example use of macro to minimize and generalize the code Jean Louis
2021-05-31 23:37 ` Michael Heerdegen
2021-05-31 23:59 ` Jean Louis
2021-06-01 0:34 ` Michael Heerdegen
2021-06-01 0:39 ` Jean Louis
2021-06-01 0:59 ` Michael Heerdegen
2021-06-01 1:25 ` Jean Louis
2021-06-01 14:02 ` Michael Heerdegen
2021-06-01 16:33 ` Jean Louis
2021-06-01 16:54 ` Yuri Khan
2021-06-01 17:24 ` Jean Louis
2021-06-01 17:57 ` Yuri Khan
2021-06-01 18:12 ` Jean Louis
2021-05-31 21:45 ` Jean Louis [this message]
2021-05-31 21:48 ` [External] : Re: Why is defun not executed during load-file? Michael Heerdegen
2021-05-31 23:41 ` Drew Adams
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