Benchmark: regex-split-wc - MeasureThat.net

Script Preparation code:

string = 'This is string with "some quotes" and another "quotes"';

Tests:

split
string.split('"') .map((part, index) => (index % 2 === 0 ? part : `«${part}»`)) .join('')
replace
string.replace(/(")(.*?)(")/g, '«$2»')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
split
replace

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser/OS: Chrome 122 on Windows

View result in a separate tab

Test name	Executions per second
split	1880757.1 Ops/sec
replace	1390374.6 Ops/sec

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

LLMs can make mistakes. Check important info.

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

**Benchmark Overview**

MeasureThat.net provides a JavaScript microbenchmarking platform that allows users to create and run benchmarks. The provided JSON defines a simple benchmark with two test cases: "split" and "replace".

**Test Case 1: "split"**

The first test case measures the performance of the `string.split('\"')` method, which splits the input string into parts using double quotes as delimiters. However, there's an additional transformation applied to each part: if the index is even (0-based), it wraps the text in HTML entities (`«${part}»`). The resulting benchmark script looks like this:
```javascript
string.split('\"')
  .map((part, index) => (index % 2 === 0 ? part : `«${part}»`))
  .join('')
```
**Pros and Cons of the Approach**

This approach is straightforward and easy to understand. However:

* It may not accurately represent real-world scenarios where text wrapping is more complex.
* The transformation step can introduce unnecessary overhead.

**Alternative Approaches**

To improve accuracy, alternative approaches could include:

1. Using a library like `dompurify` or `html-entities` to handle HTML entity encoding in a more robust way.
2. Adding additional tests with different input scenarios (e.g., single quotes, escaped characters).

**Test Case 2: "replace"**

The second test case measures the performance of the `string.replace(/(\")(.*?)(\")/g, '«$2»')` method, which replaces double quotes in the input string with their HTML entity equivalents. The resulting benchmark script looks like this:
```javascript
string.replace(/(\")(.*?)(\")/g, '«$2»')
```
**Pros and Cons of the Approach**

This approach is concise but may not be the most efficient way to handle quote replacement in a real-world application.

* It uses regular expressions, which can be slower than other methods.
* The `g` flag at the end of the regex pattern ensures all matches are replaced, which might not be necessary for every use case.

**Library and Syntax**

The `replace()` method is a built-in JavaScript function that replaces occurrences of a specified pattern in a string. In this benchmark, it's used with a regular expression to replace double quotes.

There's no special JavaScript feature or syntax being tested in these benchmarks.

**Other Considerations**

When interpreting the benchmark results, keep in mind:

* The number of executions per second is the primary metric.
* Different browsers and devices may have varying performance characteristics.
* The test cases are designed to measure specific aspects of string manipulation, but real-world scenarios might require additional considerations (e.g., handling errors, edge cases).

**Alternatives**

If you want to explore alternative benchmarks or testing approaches, consider the following:

1. Use libraries like `lodash` or `util` for more efficient string manipulation.
2. Test other JavaScript features, such as async/await or Promises.
3. Create a new benchmark with different test cases and scenarios.

Feel free to ask if you have any further questions!

Related benchmarks:

regex-split-wc (version: 0)

Comparing performance of: split vs replace

Created: 2 years ago by: Guest

Jump to the latest result

split

replace

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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