Lodash - uniqWith method

Syntax

_.uniqWith(array, [comparator])

This method is like _.uniq except that it accepts comparator which is invoked to compare elements of array. The order of result values is determined by the order they occur in the array.The comparator is invoked with two arguments: (arrVal, othVal).

Arguments

• array (Array) − The array to inspect.

• [comparator] (Function) − The comparator invoked per element.

Output

• (Array) − Returns the new duplicate free array.

Example

var _ = require('lodash');
var list = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];
var result = _.uniqWith(list, _.isEqual);
console.log(result);

Save the above program in tester.js. Run the following command to execute this program.

Command

\>node tester.js

Output

[ { x: 1, y: 2 }, { x: 2, y: 1 } ]