multiple-value-prog1 (ANSI and GNU Common Lisp Document)

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#### 5.3.51 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