map-bind
map-bind is a macro that allows visual grouping of variables with their corresponding values
(not necessarily 1:1) in calls to mapping operators when using an inline lambda.
It does so in a way that automatically supports virtually every existing and future mapping operator,
all lambda list keywords and funcall/apply/multiple-value-call variations.
It does all this with a surprisingly simple implementation!
Here's an example designed to show many features at once:
(color key: prologue arguments values lambda-body)
(map-bind (multiple-value-call #'map 'vector)
((symbol #(a b c))
(number '(1 2 3))
((&rest others &key &allow-other-keys) (values '(d e f) #(4 5 6)))
((&aux (plus-ten (+ number 10)))))
(list (1- number) symbol plus-ten (reverse others)))
==
(multiple-value-call #'map 'vector
(lambda (symbol number
&rest others &key &allow-other-keys
&aux (plus-ten (+ number 10)))
(list (1- number) symbol plus-ten (reverse others)))
#(a b c)
'(1 2 3)
(values '(d e f) #(4 5 6)))
=>
#((0 A 11 (4 D)) (1 B 12 (5 E)) (2 C 13 (6 F)))
To use map-bind, simply (:import-from #:map-bind #:map-bind). Don't (:use)!