Run results for: Rambda vs. Lodash

Compares performance on the same task using Lodash vs two styles of Ramda vs two styles of "native" Javascript. In all cases the task is pulling "counter" property from each item in an array, filtering out odd items, squaring them, then returning those squared values that have less than two digits.

Run details:

User agent: Mozilla/5.0 (Linux; U; Android 9; vi-vn; CPH1937 Build/PKQ1.190714.001) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/70.0.3538.80 Mobile Safari/537.36 OppoBrowser/25.6.3.2

Browser: Chrome Mobile 70

Operating system: Android

Device Platform: Mobile

Date tested: 4 years ago

Test name	Executions per second
Lodash	318.3 Ops/sec
Rambda without relying on currying or composition	325.7 Ops/sec
Rambda with currying and composition	330.6 Ops/sec

HTML Preparation code:

<script src="https://unpkg.com/rambda@4.5.0/dist/rambda.umd.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.fp.min.js"></script>

Script Preparation code:

var fp = _.noConflict();

var data = _.range(10000).map(function(i) {
  return {
    counter: i
  }
});

function isOdd(num) {
  return num % 2 === 1;
}

function square(num) {
  return num * num;
}

function lessThanThreeDigits(num) {
  return num.toString().length < 3;
}

Tests:

Lodash
var result = _.chain(data) .map('counter') .filter(isOdd) .map(square) .filter(lessThanThreeDigits) .value();
Rambda without relying on currying or composition
var result = R.filter(lessThanThreeDigits, R.map(square, R.filter(isOdd, R.pluck('counter', data))));
Rambda with currying and composition
var result = R.pipe( R.pluck('counter'), R.filter(isOdd), R.map(square), R.filter(lessThanThreeDigits) )(data);

Run results for: Rambda vs. Lodash

Compares performance on the same task using Lodash vs two styles of Ramda vs two styles of "native" Javascript. In all cases the task is pulling "counter" property from each item in an array, filtering out odd items, squaring them, then returning those squared values that have less than two digits.

Lodash

Rambda without relying on currying or composition

Rambda with currying and composition