Benchmark: Lodash vs for of

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.min.js"></script>

Script Preparation code:

var arr = [];
for (var i = 0; i < 1000; i++) {
  arr[i] = i;
}

function fn(a) {
  return a * 2 * 5;
}

Tests:

Lodash
_.forEach(arr,fn)
For Of native
for(i of arr) fn(i);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash
For Of native

Fastest: N/A

Slowest: N/A

Latest run results:

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

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Let's break down the provided JSON data and explain what's being tested, the different approaches compared, their pros and cons, and other considerations.

**Benchmark Definition**

The benchmark is designed to compare the performance of Lodash's `forEach` function with the native `for...of` loop in JavaScript. The test case uses a simple array `arr` with 1000 elements, where each element is assigned a value using the expression `i = i`.

**Script Preparation Code**

The script preparation code defines a function `fn(a)` that takes an argument and returns its result multiplied by 2 and then by 5. This function will be used as the callback in both the Lodash `forEach` function and the native `for...of` loop.

**Html Preparation Code**

The HTML preparation code includes a reference to the Lodash library, specifically version 4.17.4, which is loaded before running the benchmark.

**Individual Test Cases**

There are two individual test cases:

1. **Lodash**: The first test case uses the Lodash `forEach` function with the array `arr` and the function `fn` as the callback.
2. **For Of native**: The second test case uses the native `for...of` loop with the same array `arr` and the function `fn` as the loop body.

**Comparison**

The comparison between Lodash's `forEach` and the native `for...of` loop is based on their execution performance. The benchmark measures the number of executions per second for each test case.

**Pros and Cons**

* **Lodash `forEach`**: Pros:
	+ Easier to write and maintain, especially for complex iteration logic.
	+ Provides a convenient way to iterate over arrays.
* Cons:
	+ May incur a performance overhead due to the use of a library function.
	+ May not be as efficient as native JavaScript loops in some cases.
* **Native `for...of` loop**: Pros:
	+ Generally faster than Lodash's `forEach`, especially for large datasets.
	+ More control over iteration logic and optimization opportunities.
* Cons:
	+ Requires more manual code management, which can lead to errors if not done correctly.

**Other Considerations**

When comparing the two approaches, consider the following:

* **Context**: The choice between Lodash's `forEach` and the native `for...of` loop depends on the specific use case. If you need a simple, easy-to-use iteration function, Lodash might be a better choice. However, if you require fine-grained control over iteration logic or performance optimization, the native `for...of` loop is likely a better option.
* **Library version**: The Lodash library version used in this benchmark (4.17.4) may have undergone changes since its release, which could affect the performance of the `forEach` function.

**Alternatives**

If you're looking for alternative JavaScript libraries or built-in functions for iteration, consider the following:

* **Array.prototype.forEach()**: This is a built-in method that iterates over arrays and can be used as an alternative to Lodash's `forEach`.
* **Underscore.js**: Another popular JavaScript library that provides an iterator-based approach to iteration.
* **Ramda**: A functional programming library that includes an implementation of the `forEach` function.

Keep in mind that each alternative has its own strengths and weaknesses, and the choice ultimately depends on your specific needs and preferences.

Related benchmarks:

Lodash vs for of (version: 0)

Testing lodash vs for of

Comparing performance of: Lodash vs For Of native

Created: 7 years ago by: Guest

Jump to the latest result

Lodash

For Of native

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):