Analogous to [`by`](https://docs.racket-lang.org/seq/index.html#%28def._%28%28lib._seq%2Fmain..rkt%29._by%29%29) for lists. Suggested by @benknoble as `every` (see #183 ). This would be part of `(require qi)`.
Analogous to
byfor lists. Suggested by @benknoble asevery(see #183 ).This would be part of
(require qi).