Question

I’m running into a name collision with iterate and count standard function in the example below:

(defun svs-to-images (file)
  (with-open-file (stream file)
    (iterate:iter
      (iterate:for line #:= (read-line stream nil nil))
      (iterate:while line)
      (line-to-image
       (iterate:iter
         (iterate:for c #:in-string line)
         (iterate:with word)
         (iterate:with pos #:= 0)
         (iterate:with result #:= ; ---------\/ here
                       (make-array (list (1+ (count #\, line)))
                                   :element-type 'fixnum))
         (if (char= c #\,)
             (setf (aref result pos)
                   (parse-integer
                    (coerce (reverse word) 'string))
                   pos (1+ pos)
                   word nil)
             (setf word (cons c word)))
         (iterate:finally result)) 28))))

The error I’m getting is:

csv-parser.lisp:19:5:
  error: 
    during macroexpansion of
    (ITERATE:ITER
      (ITERATE:FOR LINE #:= ...)
      (ITERATE:WHILE LINE)
      ...).
    Use *BREAK-ON-SIGNALS* to intercept:

     Iterate, in (COUNT , LINE):
    Missing value for LINE keyword

Compilation failed.

And, if I understood it correctly, it is trying to use count as if it was the count driver from iterate, instead of the original function. How would I make it so that the correct count is used?

Answer 1

In comp.lang.lisp Chris Riesbeck offered this as a workaround for a similar question a few years ago:

(remprop 'count 'iter::synonym)

From then you need to use COUNTING as the iterate clause. CL:COUNT then should refer to the Common Lisp function. You would need to recompile the code.