Benchmark: lodash array sizes 2

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>

Script Preparation code:

var max2 = 10000; // 10,000,000 (10 Million)

var arr2 = [];
for (var i = 0; i <= max2; i++) { arr2.push(i); }

Tests:

Native
for (let i = 0; i < 10000; ++i) console.log(arr2.length)
Lodash
_.forEach(arr2, i => { console.log(_.size(arr2)) });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Native
Lodash

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark definition and test cases to help explain what's being tested.

**Benchmark Definition:**

The benchmark defines two different ways to measure the size of an array in JavaScript:

1. **Native**: This option uses a simple `for` loop to iterate over the array and print its length.
2. **Lodash**: This option uses the Lodash library's `_.size()` function to calculate the size of the array.

**Options Compared:**

The benchmark is comparing two approaches:

* Using a native JavaScript `for` loop to measure array size
* Using the Lodash library's `_.size()` function to measure array size

**Pros and Cons:**

1. **Native Approach:**
	* Pros:
		+ No additional dependencies or overhead.
		+ May be faster since it doesn't involve a library call.
	* Cons:
		+ Can be slower due to the overhead of the `for` loop and the need to iterate over each element.
		+ May not work as expected for very large arrays, as it can cause performance issues or crashes.
2. **Lodash Approach:**
	* Pros:
		+ Provides a simple and efficient way to measure array size without writing custom code.
		+ May be faster since Lodash's implementation is optimized for performance.
	* Cons:
		+ Requires the Lodash library, which adds overhead and dependency.
		+ May have slower performance compared to the native approach due to the library call.

**Library:**

The Lodash library is a popular JavaScript utility library that provides a wide range of functions for tasks such as array manipulation, string manipulation, and more. In this benchmark, it's used to provide the `_.size()` function, which calculates the size of an array.

**Special JS Feature or Syntax:**

None mentioned in the provided code. However, if you're using modern JavaScript features like async/await or arrow functions, they might be included in future benchmarks.

**Other Alternatives:**

If you want to measure array size without relying on a library, you could use other approaches like:

* Using the `Array.prototype.length` property directly
* Implementing a custom iterator or generator function to calculate the array length

However, these alternatives would likely have similar pros and cons as the native approach.

The benchmark result shows that the native approach is faster in this specific scenario, but it's essential to note that results may vary depending on the specific use case and environment.

Related benchmarks:

lodash array sizes 2 (version: 0)

Comparing performance of: Native vs Lodash

Created: 4 years ago by: Guest

Jump to the latest result

Native

Lodash

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):