Run results for: Ramda vs Reduce

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36

Browser: Chrome 93

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Ramda	568879.0 Ops/sec
Reduce	1373906.0 Ops/sec

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.26.1/ramda.min.js"></script>

Script Preparation code:

var apps = [{
  name: 'app1',
  categories: ['a', 'b', 'c']
}, {
    name: 'app2',
  categories: ['b', 'd']
}, {
    name: 'app3',
  categories: ['a', 'd']
}]

Tests:

Ramda
R.countBy(R.identity)(R.flatten(R.map(R.prop('categories'), apps)))
Reduce
var categories = apps.reduce((acc, app) => acc.concat(app.categories), []); var counts = categories.reduce((acc, cat) => { if (acc[cat]) { acc[cat] = acc[cat] + 1; } else { acc[cat] = 1; } return acc; }, {});

Run results for: Ramda vs Reduce

Testing if Ramda brings some performance issues (extra loops)

Ramda

Reduce