join
import { join } from "https://github.gh-proxy.cn/raw.githubusercontent.com/baetheus/fun/main/set.ts";Given a ReadonlySet of ReadonlySet, flatten all of the inner sets and return a ReadonlySet.
@example
import * as S from "./set.ts";
const setOfSets = S.set(S.set(1, 2), S.set(3, 4), S.set(1, 4));
const result = S.join(setOfSets); // Set(1, 2, 3, 4)
function join<A>(uua: ReadonlySet<ReadonlySet<A>>): ReadonlySet<A>;