Benchmark: lodash reduce vs array reduce

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var numbers = [...Array(10000000).keys()];

Tests:

Lodash
_.reduce(numbers, (sum, n) => sum + n, 0)
Native
numbers.reduce((sum, n) => sum + n, 0)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash
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 dive into the world of JavaScript microbenchmarks.

**What is being tested?**

The provided benchmark tests two approaches to calculate the sum of an array: using Lodash's `reduce` function and the native JavaScript `reduce` method.

**Options compared:**

1. **Lodash's `reduce`**: A popular utility library for functional programming, providing a simple way to reduce arrays to a single value.
2. **Native JavaScript `reduce`**: The built-in array reduction method that performs the same calculation as Lodash's `reduce`.

**Pros and Cons of each approach:**

1. **Lodash's `reduce`**:
	* Pros:
		+ Easy to use and understand, thanks to its familiar syntax.
		+ Fast execution performance due to optimized C++ code.
	* Cons:
		+ Additional overhead due to loading an external library.
		+ May introduce dependencies not present in the benchmark environment.
2. **Native JavaScript `reduce`**:
	* Pros:
		+ No additional dependencies or overhead.
		+ Fast execution performance, as it's a built-in method.
	* Cons:
		+ Requires understanding of the native array reduction mechanism.
		+ May be slower than Lodash's implementation due to interpretation overhead.

**Library:**

The `lodash` library is used in this benchmark. It's a popular utility library for functional programming, providing a wide range of functions for tasks like string manipulation, array and object manipulation, and more. In this case, it provides the `reduce` function that's being compared against the native JavaScript implementation.

**Special JS feature or syntax:**

There is no special JavaScript feature or syntax used in this benchmark beyond what's commonly found in modern JavaScript code.

**Other alternatives:**

If you're interested in exploring alternative implementations, here are a few:

1. **Closures**: You could implement the `reduce` method using a closure to iterate over the array elements.
2. **For loop**: Another approach would be to use a traditional `for` loop to iterate over the array elements and calculate the sum.
3. **Array.prototype.forEach()**: Using `forEach()` instead of `reduce()` can also provide an interesting comparison.

However, keep in mind that these alternatives might not offer significant performance improvements or new insights into the characteristics of the native JavaScript implementation.

I hope this explanation helps!

Related benchmarks:

lodash reduce vs array reduce (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>

Fastest: N/A

Slowest: N/A

No previous run results

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