Function cross

cross<S, T>(a, b): [S, T][]
Returns the Cartesian product of the two arrays a and b. For each element i in the specified array a and each element j in the specified array b, in order, it creates a two-element array for each pair.
Type Parameters
- S
- T
Parameters
- a: Iterable<S>
  First input array.
- b: Iterable<T>
  Second input array.
Returns [S, T][]
cross<S, T, U>(a, b, reducer): U[]
Returns the Cartesian product of the two arrays a and b. For each element i in the specified array a and each element j in the specified array b, in order, invokes the specified reducer function passing the element i and element j.
Type Parameters
- S
- T
- U
Parameters
- a: Iterable<S>
  First input array.
- b: Iterable<T>
  Second input array.
- reducer: ((a, b) => U)
  A reducer function taking as input an element from "a" and "b" and returning a reduced value.
  - - (a, b): U
    - Parameters
      a: S
      b: T
      Returns U
Returns U[]