how to use the xorwith function from the lodash library in typescript

To use the xorWith function from the Lodash library in TypeScript, you first need to install the Lodash library. You can do this using npm by running the following command in your terminal:

npm install lodash
19 chars
2 lines

Once you have installed Lodash, you can import the xorWith function in your TypeScript file like this:

index.ts
import { xorWith } from 'lodash';
34 chars
2 lines

The xorWith function takes two arrays and a comparator function as input, and returns an array containing the symmetric difference between the two input arrays. The comparator function is used to compare the elements of the arrays. It should return true if the two elements are considered equal and false otherwise.

Here is an example usage of the xorWith function in TypeScript:

index.ts
import { xorWith } from 'lodash';

interface Point {
  x: number;
  y: number;
}

const points1: Point[] = [{ x: 1, y: 2 }, { x: 3, y: 4 }, { x: 5, y: 6 }];
const points2: Point[] = [{ x: 1, y: 2 }, { x: 7, y: 8 }, { x: 5, y: 6 }];

const isPointEqual = (p1: Point, p2: Point) => p1.x === p2.x && p1.y === p2.y;

const symmetricDifference = xorWith(points1, points2, isPointEqual);

console.log(symmetricDifference); // Output: [{x: 3, y: 4}, {x: 7, y: 8}]
457 chars
16 lines

In this example, we use the xorWith function to compute the symmetric difference between two arrays of Point objects. The isPointEqual function is used as the comparator function to compare the Point objects. The resulting array contains the two Point objects that are only present in one of the arrays.

gistlibby LogSnag