moy-fp/src/List/xprod.js

A functional programming library.

import curry from '../Function/curry'

/**
 * [b] -> [a] -> [[a, b]]
 */
const xprod = curry(
  (list2, list1) => {
    const list = []
    for(let item1 of list1){
      for(let item2 of list2){
        list.push([item1, item2])
      }
    }
    return list
  }
)

export default xprod