Warning: This is the manual of the legacy Guile 2.2 series. You may want to read the manual of the current stable series instead.

7.5.10 SRFI-11 - let-values

This module implements the binding forms for multiple values let-values and let*-values. These forms are similar to let and let* (see Local Bindings), but they support binding of the values returned by multiple-valued expressions.

Write (use-modules (srfi srfi-11)) to make the bindings available.

(let-values (((x y) (values 1 2))
             ((z f) (values 3 4)))
   (+ x y z f))
⇒
10

let-values performs all bindings simultaneously, which means that no expression in the binding clauses may refer to variables bound in the same clause list. let*-values, on the other hand, performs the bindings sequentially, just like let* does for single-valued expressions.