unzip
builtin-function
(unzip seq)
Returns a list of the elements at even positions and at odd positions of seq.
seq
make-html > (unzip (series 10)) it: ((1 3 5 7 9) (2 4 6 8 10)) make-html > (unzip (range 10)) it: ((0 2 4 6 8) (1 3 5 7 9))