Lodash _.pullAllWith() Method

Lodash_.pullAllWith() method is similar to the _.pullAll() method that returns the first array containing the values that are in the first array not in the second array but in _.pullAllWith() all the elements of the first array are compared with the second array by applying comparison provided in third. It may be a little complex to understand by reading this but it will become simple when you see the example.

Syntax:

_.pullAllWith(array, values, [comparator]);

Parameters:

• array: This parameter holds the array that needs to be modified.
• values: This parameter holds the value that needs to be removed.
• comparator: This parameter holds the comparison invoked per element.

Return Value:

This method returns an array. 

Example 1: In this example, we are removing the giving array from another array that has the same value as it and printing the result in the console.

Javascript

// Requiring the lodash library
const _ = require("lodash");

// Original array
let x = [1, 2, 3]

// Value array to be subtracted
let y = [2, 4, 5]

// Printing the original array
console.log("Before : ", x);

// Array after _.pullAllWith()
// method where _.isEqual is the
// comparator
_.pullAllWith(x, y, _.isEqual);

// Printing the output
console.log("After : ", x);

Output:

Example 2: In this example, we are removing the giving array from another array that has the same value as it and printing the result in the console.

Javascript

// Requiring the lodash library
const _ = require("lodash");

// Original array
let x = [{ a: 1 }, { b: 2 }, 6]

// Value array to be subtracted
let y = [{ a: 1 }, 7, 6]

// Printing the original array
console.log("Before : ", x);

// Array after _.pullAllWith()
// method where _.isEqual is the
// comparator
_.pullAllWith(x, y, _.isEqual);

// Printing the output
console.log("After : ", x);

Output: