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On 20-01-12 00:43, Broseph wrote:
>
> Hello, I am an undergrad math student at Whittier college, and I
> have been trying to figure out how to read lines from a text file
> into a list of characters in scheme. I plan on using a list of
> prime numbers output from a python script i wrote, but i am having
> trouble getting the text from the file into a list. Could someone
> show me how this could be done? The file I am using has each prime
> number on a new line like this: 2 3 5 7 11 13 etc. I want to put it
> into a list like this: ((#\2) (#\3) (#\5) (#\7) (#\1 #\1) (#\1
> #\3)) or ("2" "3" "5" "7" "11" "13") I am thinking this would be
> the easiest way to get the information into a list, since i have
> written functions for turning lists of characters or strings into
> an integer.
Something like:
(with-input-from-file "primes"
(lambda ()
(let loop ()
(let ((token (read)))
(if (eof-object? token)
'done
(begin
(displayln token)
(loop)))))))
should get you started,
Marijn
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