EOF condition in (read) from file 
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 EOF condition in (read) from file


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   Newsgroups: comp.lang.lisp,comp.lang.lisp.x
   Date: 7 Feb 94 19:12:32
   Organization: Mississippi State University
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   Hello,
          I am running lucid lisp on a sun machine and the following code
   does not detect the EOF condition.  Can anybody tell me why ?

   (setq temp (read in t 'EOF))
   (if (equal temp 'EOF

   or the code

   (setq temp (read in 'EOF))
   (if (equal temp 'EOF)

   I am reading the values from an ascii file but I get struck at the end
   of the file.  The second version worked in xlisp some time back, but I
   could not use xlisp as I wanted to use the (file-position in :start) and
    (random 0.2 state) functions.

     I could not find anything about this in the FAQs.  Please reply to

Try using read with the second argument (eof-error-p) being nil.

Quote:
> ;;; Arglist read

(&OPTIONAL (STREAM *STANDARD-INPUT*) (CLIM-LISP::EOF-ERROR-P T)
 (CLIM-LISP::EOF-VALUE NIL) (CLIM-LISP::RECURSIVE-P NIL))

So, the following should work:

(setq temp (read in nil 'eof))
(if (eq temp 'eof) ...)
--
Ken Anderson

BBN STC              Work Phone: 617-873-3160
10 Moulton St.       Home Phone: 617-643-0157
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USA



Mon, 29 Jul 1996 17:45:55 GMT  
 
 [ 1 post ] 

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