Benchmark: lodash@v4.17.15 .forEach vs native foreach

HTML Preparation code:

<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.15/lodash.min.js'></script>

Script Preparation code:

var data = [{a: 10000}, {b: 20000}, {c: 30000}, {d: 40000}, {e: 50000}]

Tests:

Lodash
_.forEach(data,(value, index) => {console.log(value)})
Native
data.forEach((value, index) => {console.log(value)})

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash
Native

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):

LLMs can make mistakes. Check important info.

Let's break down the provided JSON and explain what is being tested, compared, and other considerations.

**Benchmark Definition**

The benchmark definition compares the performance of two approaches: using Lodash's `forEach` function versus the native `forEach` function in JavaScript (i.e., built-in to the language).

**Options Compared**

Two options are being compared:

1. **Lodash's `forEach`**: A popular JavaScript utility library that provides a functional programming style for iterating over arrays and objects.
2. **Native `forEach`**: The built-in `forEach` function in JavaScript, which is used to iterate over arrays and objects.

**Pros and Cons**

Here are some pros and cons of each approach:

* **Lodash's `forEach`**:
	+ Pros: Provides a consistent and predictable way to iterate over arrays and objects, regardless of the browser or environment. Lodash also provides additional features like support for async iterations.
	+ Cons: Adds an extra dependency (the Lodash library) and may introduce overhead due to the need to import and initialize the library.
* **Native `forEach`**:
	+ Pros: No additional dependencies or overhead, as it's built into the language. The native implementation is also optimized for performance.
	+ Cons: May behave differently in different browsers or environments, which can lead to inconsistent results.

**Library**

Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks like array manipulation, string handling, and functional programming. In this benchmark, Lodash's `forEach` function is used as the implementation for iterating over the `data` array.

**Special JS Feature or Syntax**

There doesn't seem to be any special JavaScript features or syntax being tested in this benchmark. The code uses standard JavaScript syntax and doesn't rely on any experimental features.

**Other Alternatives**

If you want to write your own custom loop that iterates over an array, you could use a traditional `for` loop or a recursive approach. For example:

```javascript
function customForEach(array, callback) {
  for (var i = 0; i < array.length; i++) {
    callback(array[i]);
  }
}

// Usage:
customForEach(data, function(value) { console.log(value); });
```

However, using the native `forEach` or Lodash's `forEach` is generally recommended due to their performance and consistency benefits.

**Benchmark Result**

The provided benchmark result shows the execution speed of each option on a Chrome 86 browser on a Mac OS X 10.15.7 machine. The results indicate that Lodash's `forEach` performs better than the native implementation, but both are fast and efficient.

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36

Browser/OS: Chrome 86 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Lodash	13488.4 Ops/sec
Native	10792.8 Ops/sec

Related benchmarks:

[email protected] .forEach vs native foreach (version: 0)

Comparing performance of: Lodash vs Native

Created: 4 years ago by: Guest

Jump to the latest result

Lodash

Native

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):