Run results for: Lodash "uniqWith" "uniqBy" 8

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Browser: Chrome 126

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 3 months ago

Test name	Executions per second
uniqWith	176.4 Ops/sec
uniqBy Join	4471.7 Ops/sec
uniqBy Stringify	2703.6 Ops/sec
uniqBy Stringify Pick	1023.4 Ops/sec
uniqBy Join map pick	3913.8 Ops/sec

HTML Preparation code:

<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js'></script>

Script Preparation code:

var newUsers = [
  { 'name': 'fred',    'age': 40 },
  { 'name': 'barney',  'age': 36 },
  { 'name': 'pebbles', 'age': 2 }
];

for(let i = 0; i < 2000; i++) {
  var newUser = { 'name': 'user_' + i, 'age': Math.floor(Math.random() * i) };
  newUsers.push(newUser);
}

Tests:

uniqWith
const unionUsers1 = _.uniqWith(newUsers, (a, b) => a.name === b.name && a.age === b.age);
uniqBy Join
const unionUsers1 = _.uniqBy(newUsers, v => [v.name, v.age].join('-'));
uniqBy Stringify
const unionUsers1 = _.uniqBy(newUsers, v => JSON.stringify([v.name, v.age]));
uniqBy Stringify Pick
const unionUsers1 = _.uniqBy(newUsers, v => JSON.stringify(_.pick(v, ['name', 'age'])));
uniqBy Join map pick
const unionUsers1 = _.uniqBy(newUsers, v => (['name', 'age'].map(n => v[n])).join('-'));

Run results for: Lodash "uniqWith" "uniqBy" 8

uniqWith

uniqBy Join

uniqBy Stringify

uniqBy Stringify Pick

uniqBy Join map pick