Benchmark: String _.split vs split

HTML Preparation code:

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

Script Preparation code:

var string = "qwertyuiopasdfghjklzxcvbnmqwerty";

Tests:

_.split
_.split(string, "er")
split
string.split("er")

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
_.split
split

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.138 Safari/537.36

Browser/OS: Chrome 81 on Mac OS X 10.15.4

View result in a separate tab

Test name	Executions per second
_.split	2107907.0 Ops/sec
split	4323439.5 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested.

**Benchmark Overview**

The provided benchmark compares the performance of two approaches to split a string into an array of substrings: using the `_.split()` function from Lodash (a utility library) versus using the built-in `split()` method.

**Options Compared**

There are only two options compared:

1. **Lodash's `_split()` function**: This is a utility function from the Lodash library that splits a string into an array of substrings based on a specified separator.
2. **Built-in `split()` method**: This is a built-in JavaScript method that also splits a string into an array of substrings based on a specified separator.

**Pros and Cons**

Here are some pros and cons for each approach:

* **Lodash's `_split()` function**:
	+ Pros: Often faster and more efficient than the built-in `split()` method, especially when dealing with large strings or multiple separators.
	+ Cons: Requires importing an external library (Lodash), which may add extra overhead. Additionally, the implementation details of Lodash's `_split()` function might not be optimized for every specific use case.
* **Built-in `split()` method**:
	+ Pros: Faster and more lightweight than Lodash's `_split()` function since it doesn't require an external library.
	+ Cons: May be slower or less efficient when dealing with large strings or multiple separators, as the built-in implementation might not be optimized for every specific use case.

**Library and Purpose**

The provided benchmark uses the Lodash library, which is a utility library that provides a collection of functions to help with common tasks in JavaScript. The `_.split()` function from Lodash is designed to provide a more efficient and flexible way to split strings compared to the built-in `split()` method.

**Special JS Feature or Syntax**

There are no special JavaScript features or syntax being tested in this benchmark. Both approaches use standard JavaScript methods.

**Other Considerations**

When choosing between these two approaches, consider the following factors:

* Performance: If you're working with large strings or need to split them frequently, Lodash's `_split()` function might be a better choice.
* Overhead: If you want to avoid adding extra overhead by importing an external library, the built-in `split()` method might be sufficient.

**Alternatives**

Other alternatives for splitting strings in JavaScript include:

* Using regular expressions (e.g., `str.match(/er/g)`)
* Using a custom implementation with a simple loop
* Utilizing other utility libraries that provide string manipulation functions

However, these alternatives may not offer the same level of efficiency or flexibility as Lodash's `_split()` function or the built-in `split()` method.

Related benchmarks:

String _.split vs split (version: 0)

Comparing performance of: _.split vs split

Created: 4 years ago by: Guest

Jump to the latest result

_.split

split

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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