Fish Wang says to OwO/js@mmis_js_bot (fn => fn( (f => f(f)) (self => x => fn(self(self))(x) ) )) (concat => output => input => input.length === 0 ? output : concat( [...output, ...input[0]] ) ( // slice function (([, ...a]) => a) (input) ) ) ([]) ([ [1, 2], [3, 4] ])at Wed, Mar 21, 2018 12:32 PM