These methods create sequences of the very large combinations of values.

cartesianProduct

Generates sequence of the Cartesian product of an arbitrary number of columns of data.

const sequence: Seq<[string, number]> = cartesianProduct(
  ["a", "b", "c"],
  [1, 2, 3]
);

type cartesianProduct = <T>(...inputs: T[][]) => Seq<T[]>;

powerSet

Generates sequence of Sets of a Power set.

const sequence: Seq<Set<string>> = powerSet(["a", "b", "c"]);

type powerSet = <T>(...items: T[]) => Seq<Set<T>>;

combination

Generates sequence of Sets of a Combination of a given length.

const sequence: Seq<Set<string>> = combination(["a", "b", "c"], 2);

type combination = <T>(items: T[], size: number = items.length) => Seq<Set<T>>;