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Variable *, **, ***
Value Type
an object.
Initial Value
Description
The variables *, **, and *** are maintained by the Lisp read-eval-print loop to save the values of results that are printed each time through the loop.
The value of * is the most recent primary value that was printed, the value of ** is the previous value of *, and the value of *** is the previous value of **.
If several values are produced, * contains the first value only; * contains nil if zero values are produced.
The values of *, **, and *** are updated immediately prior to printing the return value of a top-level form by the Lisp read-eval-print loop. If the evaluation of such a form is aborted prior to its normal return, the values of *, **, and *** are not updated.
Examples
(values 'a1 'a2)
A1 A2
'b
B
(values 'c1 'c2 'c3)
C1 C2 C3
(list * *)
(C1 B A1)
(defun cube-root (x) (expt x 1/3))
CUBE-ROOT
(defparameter *a* (cube-root 27.0))
*A*
*a*
3.0
(* * 9.0)
27.0
Affected By
See Also
Variable -, Variable +, Variable /, {\secref\TopLevelLoop}
