3.2 Making declarations

3.2.9 ARGLIST declarations

Anarglist declaration explicitly specifies the lambda list that is returned by a call to the functionarglist. Anarglist declaration allows you to specify a descriptive lambda list that is helpful to a user. Thearglist declaration has the following form:

(declare (arglist declared-arguments))

If a function or macro definition does not contain anarglist declaration, the functionarglist returns the lambda list used in the original source code, as shown in the following example:

> (defun multiply (x y)
    (* x y))
MULTIPLY

> (arglist 'multiply)
(X Y)

> (defun new-multiply (x y)
    (declare (arglist factor1 factor2))
    (* x y))
NEW-MULTIPLY

> (arglist 'new-multiply)
(FACTOR1 FACTOR2)

The Advanced User's Guide - 9 SEP 1996

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