git.delta.rocks / unique-network / refs/commits / 9d232ae806cb

no syntactic changes

323  return before - after;323  return before - after;
324}324}
325325
326type ElementOf<A> = A extends readonly (infer T)[] ? T : never;
327// I want a fancier api, not a memory efficiency
328export function* cartesian<T extends Array<Array<any>>, R extends Array<any>>(internalRest: [...R], ...args: [...T]): Generator<[...R, ...{[K in keyof T]: ElementOf<T[K]>}]> {
329  if(args.length === 0) {
330    yield internalRest as any;
331    return;
332  }
333  for(const value of args[0]) {
334    yield* cartesian([...internalRest, value], ...args.slice(1)) as any;
335  }
336}