function
/usr/local/lib/janet/spork/generators.janet on line 126 , column 1
(map f iterable & iterables )
Returns a coroutine that yields (f first-element-of-iterable
;first-elements-of-iterables ), (f second-element-of-iterable
;second-elements-of-iterables ), (f third-element-of-iterable
;third-elements-of-iterables ), and so on until any of the given
iterables doesn 't have any more element.