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

pullAll

This method is like pull except that it accepts an array of values to filter out before Mutating and pulling all the values from the original array.

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' ]