Ramda vs. Lodash

JavaScript performance comparison

Revision 5 of this test case created by and last updated

Preparation code 

<script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.17.1/ramda.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.10.1/lodash.js"></script>
      

      <script>

        Benchmark.prototype.setup = function() {

          
  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;
  }

        
  };


      
</script>

Preparation code output

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Lodash 
var result = _.chain(data)
  .pluck('counter')
  .filter(isOdd)
  .map(square)
  .filter(lessThanThreeDigits)
  .value();
 pending…
Ramda without relying on currying or composition 
var result = R.filter(lessThanThreeDigits,
  R.map(square,
    R.filter(isOdd,
      R.pluck('counter', data))));
 pending…
Ramda with currying and composition 
// Longer but more maintainable.
var result = R.pipe(
  R.pluck('counter'),
  R.filter(isOdd),
  R.map(square),
  R.filter(lessThanThreeDigits)
)(data);
 pending…
Native functional 
var result = result = data
  .map(function(value) {
    return value.counter;
  })
  .filter(isOdd)
  .map(square)
  .filter(lessThanThreeDigits);
 pending…
Native imperative 
var result = [];
var length = data.length;
for (var i = 0; i < data.length; i++) {
  var value = data[i].counter;
  var squared;
  if (isOdd(value)) {
    squared = square(value);
    if (lessThanThreeDigits(squared)) {
      result.push(squared);
    }
  }
}
 pending…
Ramda Into 
var result = R.into(
  [],
  R.pipe(
    R.pluck('counter'),
    R.filter(isOdd),
    R.map(square),
    R.filter(lessThanThreeDigits)
  ), data);
 pending…

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