Benchmark: str.match vs str.Split call

Script Preparation code:

string = "CC^CONTROL_PLUGIN_AVCHAT_ONGOING_1701008141b175cec199b8195227d58bca58d18fd61ef78302";
regex = /CC\^CONTROL_PLUGIN_([A-Z]+)_([A-Z]+)/gi;

Tests:

String.split
string.split("_")
Regex.match
string.match(regex)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
String.split
Regex.match

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:121.0) Gecko/20100101 Firefox/121.0

Browser/OS: Firefox 121 on Ubuntu

View result in a separate tab

Test name	Executions per second
String.split	8299034.5 Ops/sec
Regex.match	15086938.0 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 provided benchmark and explain what's being tested.

**Benchmark Name:** str.match vs str.Split call

**Description:** This benchmark compares the performance of two string processing methods: `str.match` with regular expressions against `str.split` without any separators.

**Options Compared:**

1. **String.match with regex**: Uses a regular expression to search for a pattern in the input string.
2. **String.split without separators**: Splits the input string into an array of substrings using spaces as delimiters.

**Pros and Cons:**

* `str.match`:
	+ Pros: Can efficiently search for complex patterns, fast execution time.
	+ Cons: May be slower than `str.split` for simple string manipulation tasks.
* `str.split`:
	+ Pros: Fast execution time, suitable for simple string splitting tasks.
	+ Cons: Can be slower for more complex pattern searches.

**Library:** None

This benchmark doesn't use any external libraries. The `str.match` method is a built-in JavaScript function that uses regular expressions under the hood.

**Special JS Feature/Syntax:** None mentioned in this benchmark, but if we were to expand it, we might discuss the following:

* JavaScript's String.prototype methods (e.g., match(), split()) use regular expressions internally.
* The use of `i` flag at the end of the regex (`/CC\\^CONTROL_PLUGIN_([A-Z]+)_([A-Z]+)/gi`) indicates case-insensitive search and global matching.

**Other Alternatives:**

If you need to compare string processing performance in JavaScript, other alternatives might include:

1. Using a library like RegEx.js or Regexpr for more advanced regex capabilities.
2. Comparing the performance of other string manipulation methods, such as `str.replace()`, `str.indexOf()`, or `str.lastIndexOf()`.
3. Testing different string encoding formats (e.g., UTF-8, ISO-8859-1) to see their impact on performance.

I hope this explanation helps you understand what's being tested in the provided benchmark!

Related benchmarks:

str.match vs str.Split call (version: 0)

Test String.match with regex against String.split with string. We are splitting a string at the spaces.

Comparing performance of: String.split vs Regex.match

Created: 2 years ago by: Guest

Jump to the latest result

String.split

Regex.match

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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