From: Jean Louis <bugs@gnu.support>
To: uzibalqa <uzibalqa@proton.me>
Cc: uzibalqa via Users list for the GNU Emacs text editor
<help-gnu-emacs@gnu.org>
Subject: Re: Looping lists through mapcar
Date: Wed, 24 Aug 2022 19:17:11 +0300 [thread overview]
Message-ID: <YwZPBzM13PF5J9dC@protected.localdomain> (raw)
In-Reply-To: <jbEfOC4-mKGZMuXVlU8PPa6yhdcgjMYgk3PI2SMfrSDYc2ekoeLRYBVOzMYF4J0hycZQdT_ojEPuAhgC_wfd7ptn_9H4Xk4sH9B8nvaDBjg=@proton.me>
To test my function, you first evaluate these:
(defconst andromeda-assoc-table-1
'(("OrycteropusAfer" . "Aardvark")
("VicugnaPacos" . "Alpaca")
("MyrmecophagaTridactyla" . "Anteater")))
;; So I evaluate it, and it is there:
;; andromeda-assoc-table-1 ⇒ (("OrycteropusAfer" . "Aardvark") ("VicugnaPacos" . "Alpaca") ("MyrmecophagaTridactyla" . "Anteater"))
(defconst andromeda-assoc-table-2
'(("Dasypodidae" . "Armadillo")
("TaxideaTaxus" . "Badger")
("Beaver" . "Beaver")))
;; andromeda-assoc-table-2 ⇒ (("Dasypodidae" . "Armadillo") ("TaxideaTaxus" . "Badger") ("Beaver" . "Beaver"))
(defconst andromeda-assoc-table-3
'(("LynxRufus" . "Bobcat")
("LepomisMacrochirus" . "Bluegill")
("RangiferTarandus" . "Caribou")))
;; andromeda-assoc-table-3 ⇒ (("LynxRufus" . "Bobcat") ("LepomisMacrochirus" . "Bluegill") ("RangiferTarandus" . "Caribou"))
(defun my-assoc-lists ()
(let* ((name "andromeda-assoc-table-")
(list '())
(counter 1))
(while (boundp (intern (concat name (number-to-string counter))))
(setq list (append list (symbol-value (intern (concat name (number-to-string counter))))))
(setq counter (1+ counter)))
list))
Then you evaluate this function:
;; (my-assoc-lists) ⇒ (("OrycteropusAfer" . "Aardvark") ("VicugnaPacos" . "Alpaca") ("MyrmecophagaTridactyla" . "Anteater") ("Dasypodidae" . "Armadillo") ("TaxideaTaxus" . "Badger") ("Beaver" . "Beaver") ("LynxRufus" . "Bobcat") ("LepomisMacrochirus" . "Bluegill") ("RangiferTarandus" . "Caribou"))
That way you can add any number instead of XX
`andromeda-assoc-table-XX' and function will add them all
together. You need not update your other function with new
symbols such as `andromeda-assoc-table-23' or number of them.
--
Jean
Take action in Free Software Foundation campaigns:
https://www.fsf.org/campaigns
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https://stallmansupport.org/
next prev parent reply other threads:[~2022-08-24 16:17 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-23 12:16 Looping lists through mapcar uzibalqa
2022-08-23 19:13 ` Jean Louis
2022-08-24 5:34 ` uzibalqa
2022-08-24 6:24 ` Jean Louis
2022-08-24 9:03 ` uzibalqa
2022-08-24 9:54 ` Emanuel Berg
2022-08-24 10:52 ` Jean Louis
2022-08-24 11:02 ` uzibalqa
2022-08-24 11:49 ` uzibalqa
2022-08-24 16:17 ` Jean Louis [this message]
2022-08-24 12:08 ` Jean Louis
2022-08-24 11:44 ` Emanuel Berg
2022-08-24 12:09 ` Jean Louis
2022-08-25 10:49 ` uzibalqa
2022-08-25 15:57 ` Jean Louis
2022-08-26 2:48 ` uzibalqa
2022-08-24 12:24 ` uzibalqa
2022-08-25 0:31 ` uzibalqa
2022-08-24 23:56 ` uzibalqa
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