Hi,
I need to read a file (lines of numbers) into a list of lists with each
line a list. I wrote the following function to do it:
(define (read-all-lines file-name)
(let ([output '()])
(let ([p (open-input-file file-name)])
(let f ([x (read-line p)])
(if (eof-object? x)
(close-input-port p)
(begin
(set! output (cons (string-split x) output))
(f (read-line p))))))
(reverse output)))
I have a few questions regarding the above code:
1. Is there an existing API to do the same thing?
2. Using set! seems not a lispy coding style. Is it true?
3. Any improvements I can make ? I bet there are tons.
Thank you!
Jinsong
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