Apropos

setFunction

    Syntax

    set symbol value value

    Arguments and Values

    symbol — a symbol.

    value — an object.

    Description

    set changes the contents of the value cell of symbol to the given value.

    (set symbol value)  (setf (symbol-value symbol) value)
    Examples
    (setf (symbol-value 'n) 1)  1 
    (set 'n 2)  2 
    (symbol-value 'n)  2 
    (let ((n 3)) 
      (declare (special n)) 
      (setq n (+ n 1)) 
      (setf (symbol-value 'n) (* n 10)) 
      (set 'n (+ (symbol-value 'n) n)) 
      n)  80 
    n  2 
    (let ((n 3)) 
      (setq n (+ n 1)) 
      (setf (symbol-value 'n) (* n 10)) 
      (set 'n (+ (symbol-value 'n) n)) 
      n)  4 
    n  44 
    (defvar *n* 2) 
    (let ((*n* 3)) 
      (setq *n* (+ *n* 1)) 
      (setf (symbol-value '*n*) (* *n* 10)) 
      (set '*n* (+ (symbol-value '*n*) *n*)) 
      *n*)  80 
     *n*  2 
    (defvar *even-count* 0)  *EVEN-COUNT* 
    (defvar *odd-count* 0)  *ODD-COUNT* 
    (defun tally-list (list) 
      (dolist (element list) 
        (set (if (evenp element) '*even-count* '*odd-count*) 
             (+ element (if (evenp element) *even-count* *odd-count*))))) 
    (tally-list '(1 9 4 3 2 7))  NIL 
    *even-count*  6 
    *odd-count*  20
    Side Effects

    The value of symbol is changed.

    See Also

    setq, progv, symbol-value

    Notes

    The function set is deprecated.

    set cannot change the value of a lexical variable.