chickadee » generalized-arrays » reverse-zip-interval

Transducers that zip the indices contained within the interval to another transduction, in forward or reverse order.

 
(import (generalized-arrays intervals)
        (transducers)
        (test))

(test "Zipping an interval onto elements of a list"
      (list (cons 'a (vector 0 0))
            (cons 'b (vector 0 1))
            (cons 'c (vector 1 0))
            (cons 'd (vector 1 1)))
      (transduce list-fold
                 (zip-interval
                   (make-default-interval (vector 2 2)))
                 (collect-list)
                 (list 'a 'b 'c 'd 'e)))