Benchmark: array some vs _.some

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.core.js"></script>

Script Preparation code:

var elements = ["cat", "dog", "bat"]

Tests:

_.some
_.some(elements, el => el.startsWith('c'))
array.some
elements.some(el => el.startsWith('c'))

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
_.some
array.some

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36

Browser/OS: Chrome 132 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
_.some	21680338.0 Ops/sec
array.some	48836220.0 Ops/sec

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

LLMs can make mistakes. Check important info.

I'd be happy to help you understand what's being tested in this JavaScript benchmark.

**Benchmark Definition**

The benchmark is defined by two test cases: `array.some` and `_.some`. Both tests aim to measure the performance of iterating over an array and checking if any element meets a certain condition.

**What is being tested?**

In both test cases, we have an array `elements` containing three strings: "cat", "dog", and "bat". The test cases iterate over this array using two different approaches:

1. `array.some`: This method returns a boolean indicating whether at least one element in the array passes the provided callback function.
2. _.some (using Lodash library): This is a function from the Lodash library that performs the same operation as `array.some`.

**Options compared**

The benchmark compares two options:

a. Using the native `array.some` method
b. Using the Lodash library's `_some` function

**Pros and Cons of each approach:**

1. **Native `array.some` method**:
	* Pros:
		+ Built-in JavaScript method, no external dependencies.
		+ Typically faster since it's a native implementation.
	* Cons:
		+ May not work as expected in older browsers or with specific browser extensions.
2. **Lodash library's `_some` function**:
	* Pros:
		+ Provides a more readable and maintainable code, especially for complex conditions.
		+ Works across different browsers and environments.
	* Cons:
		+ Requires an external dependency (the Lodash library).
		+ May introduce additional overhead due to the extra dependency.

**Library: Lodash**

Lodash is a popular JavaScript utility library that provides a wide range of functions for common tasks, such as array manipulation, string processing, and more. In this case, the `_some` function is part of the Lodash core module, which is included in the benchmark's HTML preparation code.

**Special JS feature/syntax**

None are mentioned specifically in the provided benchmark definition. However, it's worth noting that some modern JavaScript features, such as async/await or decorators, may not be supported by older browsers or environments.

**Other alternatives**

If you wanted to test other approaches, you could consider:

1. Using `array.every` instead of `array.some`, which returns a boolean indicating whether all elements in the array pass the provided callback function.
2. Implementing your own iteration and condition checking logic from scratch (not recommended, as it would likely be slower and more error-prone).
3. Using alternative libraries or frameworks that provide similar functionality to Lodash (e.g., Underscore.js, Ramda).

Keep in mind that these alternatives might not be directly comparable to the native `array.some` method or Lodash's `_some` function, so it's essential to consider the specific use case and requirements when selecting an approach.

Related benchmarks:

array some vs _.some (version: 0)

Comparing performance of: _.some vs array.some

Created: 7 years ago by: Registered User

Jump to the latest result

_.some

array.some

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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