Re: MAP (and variants) vs LOOP - Popular opinion observation?

Pascal Costanza wrote:

- More often than not, the different variables actually iterate over
different kinds of values. Recently, I needed the following costruct
quite often:
 
(loop for x in some-list
       for i from 0
       collect `(,x ,i))
 
This enumerates all elements in a list. You would have to express this
completely manually without LOOP because none of the mapxyz functions
help you here.

Wrong.

Gauche Scheme:

(map list some-list (lrange 0))

Another way:

(use gauche.sequence :only (map-with-index))
(use srfi-1 :only (xcons))

(map-with-index xcons '(20 30 40 50))
 ===>
((20 . 0) (30 . 1) (40 . 2) (50 . 3))