Hi,

Olof-joachim, iterate-devel: Thanks for the help.

I have written a small driver for iterate which iterates over dates in a given range. The basic usage is:

(iter (for (y m d) from-date '(2011 1 26) to '(2011 2 27) by 2 skipweekends nil)

    (format t "~a/~a/~a~%" d m y))

notes:

1) default value for "to"  is today 

2) default value for "by" is 1 

3) skipweekends if true, skips over weekends

I would like to include this in date-calc package, as I feel it logically belongs there. Please let me know how to go about this. 

I am just learning lisp, and all comments/flames are welcome.

In the iterate driver, I would like to reuse the given variables (y m d) instead of gensym'ming , but I get a slew of errors, which I am unable to comprehend. 

Instead of:

(defmacro-driver (FOR (y m d) FROM-DATE from-date-spec &optional TO to-date-spec BY (n 1) SKIP-WEEKENDS (skipval t))

    "Driver for iterating over dates. All dates are in YMD format, ie (YYYY MM DD)"
    (let ((ty (gensym "TO-YEAR"))
        (tm (gensym "TO-MONTH"))
        (td (gensym "TO-DATE"))
        (fy (gensym "FROM-YEAR"))
        (fm (gensym "FROM-MONTH"))
        (fd (gensym "FROM-DATE"))
 .....

(,kwd ,y next (progn

....

                                  (list ,fy ,fm  ,fd)
....

I would like to use the input yy instead of gensym'ming to hold the current iteration value like:

Thanks,

Venkatesan