Benchmark: Split vs Regex (fixed)

Script Preparation code:

var testString = "testing\nNew lines\nBleh"

Tests:

Splitting
var values = testString.split("\n"); var value1 = values[0]; var value2 = values[1]; var value3 = values[2];
Regex
var regex = /.+((?=\n)|$)/g; var result = regex.exec(testString); var value1 = regex[1]; var value2 = regex[1]; var value3 = regex[3];

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Splitting
Regex

Fastest: N/A

Slowest: N/A

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 benchmark compares two approaches to split a string into individual lines:

1. **Split Method**: Using the `split()` method with a regular expression (`\n`) to split the string into an array of substrings.
2. **Regex Method**: Using a regular expression (`.+((?=\\n)|$)/g`) to extract individual lines from the string.

**Options Compared**

The two methods are compared in terms of their execution performance, measured by the number of executions per second (ExecutionsPerSecond).

**Pros and Cons**

* **Split Method**:
	+ Pros: Simple, efficient, and widely supported.
	+ Cons: May not work correctly for all types of newline characters (e.g., Windows-style `\r\n`).
* **Regex Method**:
	+ Pros: Can handle complex string processing and multiple line endings.
	+ Cons: May be slower due to the overhead of compiling and executing a regular expression.

**Other Considerations**

* The benchmark uses JavaScript, which may affect the results due to differences in browser or engine implementations.
* The test strings are limited, which might not represent real-world scenarios. Additional tests with diverse input data could provide more accurate insights.

**Library/Functionality Used**

The `split()` method is a built-in JavaScript function, while the regular expression used in the Regex Method is a custom implementation.

**Special JS Feature/Syntax**

None mentioned in this benchmark. However, it's worth noting that some older browsers or environments might not support modern JavaScript features, which could impact results.

**Alternative Approaches**

Other alternatives to compare these methods could include:

* Using other string splitting functions (e.g., `substring()`, `slice()`) or libraries.
* Implementing custom line detection and parsing logic using JavaScript.
* Comparing performance on different platforms (e.g., desktop, mobile, server) or browsers.

Keep in mind that the choice of approach depends on the specific requirements and constraints of your project.

Latest run results:

Run details: (Test run date: 5 months ago)

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Mobile Safari/537.36

Browser/OS: Chrome Mobile 126 on Android

View result in a separate tab

Test name	Executions per second
Splitting	13466458.0 Ops/sec
Regex	8554360.0 Ops/sec

Related benchmarks:

Split vs Regex (fixed) (version: 0)

Comparing performance of: Splitting vs Regex

Created: 5 months ago by: Guest

Jump to the latest result

Splitting

Regex

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):