multiple-value-variants
Gives access to multiple-value variants of operators through one macro: MULTIPLE-VALUE. There are built-in variants for some standard operators; it's easy to create your own variants for other operators. The multiple-value mapping operators are especially useful.
$ area51 add multiple-value-variantsCopyUsage
;; area51 add updates your .asd automatically.
;; Use the package in your code:
(in-package :my-project)
(multiple-value-variants:some-function ...)