Re: Reading a text file not line by line but at once (beginner)

Liste des GroupesRevenir à cl lisp 
Sujet : Re: Reading a text file not line by line but at once (beginner)
De : Nobody447095 (at) *nospam* here-nor-there.org (B. Pym)
Groupes : comp.lang.lisp
Date : 15. Aug 2024, 00:46:26
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <v9jc40$kngb$1@dont-email.me>
References : 1
User-Agent : XanaNews/1.18.1.6
B. Pym wrote:

I have a file which consists of one word per line and I would like to
read it into a single list.
Searching the web[1] I found something which I adapted to my
needs. Basically the code works but it is terribly inefficient. This
is not the fault of the CL Cookbook. Probably I am using a hammer as a
screwdriver.
 
I'd be happy if you can give me some directions how I can tackle the
problem in a better way.
 
I like loop for this:
 
(with-open-file (s "foo.txt" :direction :input)
  (loop for line = (read-line s nil)
     while line
     collect line))
 
Gauche Scheme
 
(use gauche.generator)
 
(with-input-from-file "temp.txt"
  (cut  generator->list read-line))
 
 
Paul Graham, May 2001:
 
A hacker's language is terse and hackable. Common Lisp is not.
 
The good news is, it's not Lisp that sucks, but Common Lisp.

newLISP

(let (h (open "output.dat" "read"))
  (println (collect (read-line h)))
  (close h))

("foo 0" "2 4 6" "8 9")
 


Date Sujet#  Auteur
22 Jul 24 * Re: Reading a text file not line by line but at once (beginner)3B. Pym
23 Jul 24 +- Re: Reading a text file not line by line but at once (beginner)1Kaz Kylheku
15 Aug 24 `- Re: Reading a text file not line by line but at once (beginner)1B. Pym

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