sort
(sort coll) / (sort comp coll)
Answers the seq view copied and sorted as a list. Without a comparator numbers
sort with <, strings with string<, characters with char< and keywords by
spelling; anything else (or mixed kinds) signals instead of answering wrongly.
With one, its answer is read like the oracle's: a number puts the first argument
first when its integer part is negative (compare, (- a b)), anything else when
it is truthy (<, >). As a value a one- or two-argument lambda.