Benchmark: Sherlock Benchmark - JS Filter Test large array

HTML Preparation code:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.4/jquery.min.js">
</script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.29/angular.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.2/lodash.min.js"></script>
<script>
  _lodash = _.noConflict();
</script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></script>

Script Preparation code:

var angularFilter = angular.injector(['ng']).get('$filter')('filter');

// Generate test array
window.array = (function() {
    var arr = [];
    for (var i = 0; i < 50000; ++i) {
        arr.push(i);
    }

    return arr;
}());

Array.prototype.find = function(predicate) {
    if (this == null) {
        throw new TypeError('Array.prototype.find called on null or undefined');
    }
    if (typeof predicate !== 'function') {
        throw new TypeError('predicate must be a function');
    }
    var list = Object(this);
    var length = list.length >>> 0;
    var thisArg = arguments[1];
    var value;

    for (var i = 0; i < length; i++) {
        value = list[i];
        if (predicate.call(thisArg, value, i, list)) {
            return value;
        }
    }
    return undefined;
};

function getValue(el) {
    return el - 50 > 31;
}

Tests:

array.find
array.find(getValue);
array.filter
array.filter(getValue);
lodash.filter
_lodash.filter(array, getValue);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
array.find
array.filter
lodash.filter

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

**Overview of the Benchmark**

The provided JSON represents a JavaScript benchmark created on MeasureThat.net, which tests the performance of filtering large arrays using different approaches.

**Benchmark Definition**

The benchmark defines three test cases:

1. `array.find(getValue);`: This test case uses the built-in `find()` method of the Array prototype to filter the array.
2. `array.filter(getValue);`: This test case uses the built-in `filter()` method of the Array prototype to filter the array.
3. `_lodash.filter(array, getValue);`: This test case uses the Lodash library's `filter()` function to filter the array.

**Options Compared**

The benchmark compares the performance of these three approaches:

* **Built-in methods (`array.find` and `array.filter`)**: These methods are part of the JavaScript language standard and are implemented in V8 (the engine used by Chrome).
* **Lodash library (`_lodash.filter`)**: This is a popular utility library that provides additional functional programming features, including filtering functions.

**Pros and Cons**

Here's a brief summary of the pros and cons of each approach:

1. **Built-in methods (`array.find` and `array.filter`)**:
	* Pros: Native performance, easy to use.
	* Cons: Limited control over implementation details, may not be optimized for specific use cases.
2. **Lodash library (`_lodash.filter`)**:
	* Pros: Provides additional functionality beyond built-in methods, customizable implementation.
	* Cons: Adds overhead due to the library itself, may require additional setup.

**Library and Syntax**

The benchmark uses the Lodash library version 4.17.2. The `_lodash` variable is used as a no-conflict alias for the `_.noConflict()` function, which returns the original Lodash object to avoid polluting the global namespace.

**Special JS Feature or Syntax**

There are no special JavaScript features or syntax used in this benchmark.

**Other Considerations**

When choosing between these approaches, consider the following factors:

* **Performance**: If native performance is critical, built-in methods might be a better choice. If customization and additional functionality are important, Lodash library might be a better fit.
* **Readability and maintainability**: Built-in methods are often more concise and readable. The Lodash library provides more features, but may require more setup and maintenance.

**Alternatives**

Other alternatives for filtering arrays include:

1. **Regular expressions**: Using regular expressions to filter arrays can provide fine-grained control over the filtering process.
2. **Map functions**: Applying a map function to an array can be used to filter it.
3. **Custom implementation**: Writing a custom filtering function using JavaScript's core functionality can provide optimal performance and flexibility.

Keep in mind that each alternative has its own trade-offs and may not offer better performance or readability than the built-in methods or Lodash library.

Related benchmarks:

Sherlock Benchmark - JS Filter Test large array (version: 0)

Comparing performance of: array.find vs array.filter vs lodash.filter

Created: 2 years ago by: Guest

Jump to the latest result

array.find

array.filter

lodash.filter

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):