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( xcons d a ) pair?
(lambda (d a) (cons a d)) Of utility only as a value to be conveniently passed to higher-order procedures.
( xcons d a ) pair?
(lambda (d a) (cons a d)) Of utility only as a value to be conveniently passed to higher-order procedures.
( zip [ list? clist1 ] [ list? clist2 ] ... ) list?
(lambda lists (apply map list lists)). If zip is passed n lists, it returns a list as long as the shortest of these lists, each element of which is an n-element list comprised of the corresponding elements from the parameter lists. At least one of the argument lists must be finite.
( zip [ list? clist1 ] [ list? clist2 ] ... ) list?
(lambda lists (apply map list lists)). If zip is passed n lists, it returns a list as long as the shortest of these lists, each element of which is an n-element list comprised of the corresponding elements from the parameter lists. At least one of the argument lists must be finite.