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multiple-value-prog1 [Special Operator]

multiple-value-prog 1 => first-form {form}*

first-form-results

Arguments and Values::

first-form--a form; evaluated as described below.

form--a form; evaluated as described below.

first-form-results--the values resulting from the evaluation of first-form.

Description::

multiple-value-prog1 evaluates first-form and saves all the values produced by that form. It then evaluates each form from left to right, discarding their values.

Examples::

      (setq temp '(1 2 3)) =>  (1 2 3)
      (multiple-value-prog1
         (values-list temp)
         (setq temp nil)
         (values-list temp)) =>  1, 2, 3
     

See Also::

prog1