30-seconds-of-code/snippets/pullAll.md

pullAll

Mutates the original array to filter out the values specified (accepts an array of values).

Use Array.filter() and Array.includes() to pull out the values that are not needed. Use Array.length = 0 to mutate the passed in array by resetting it's length to zero and Array.push() to re-populate it with only the pulled values.

const pullAll = (arr, pullArr) => {
  let pulled = arr.filter((v, i) => !pullArr.includes(v));
  arr.length = 0; pulled.forEach(v => arr.push(v));
}
// let myArray = ['a', 'b', 'c', 'a', 'b', 'c'];
// pullAll(myArray, ['a', 'c']);
// console.log(myArray) -> [ 'b', 'b' ]