Benchmark: Test regex - MeasureThat.net

Script Preparation code:

var REGEX_URL;

Tests:

Regex Test
REGEX_URL.test("https://www.google.com?q=Georgi+Facello")
String match
"http://www.google.com?q=Georgi+Facello".match(REGEX_URL)

Historical Performance Data aggregated from 34 community runs

Desktop Results:

Chrome 25 runs

String match

10.8M/s

Regex Test

0/s

View exact numbers

✓ String match: 10,816,391 ops/sec
• Regex Test: 0 ops/sec

Firefox 9 runs

String match

16.0M/s

Regex Test

0/s

View exact numbers

✓ String match: 16,009,270 ops/sec
• Regex Test: 0 ops/sec

Results show median performance across all community submissions. Run this benchmark yourself to verify on your device.

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Regex Test
String match

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 7 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36 Edg/143.0.0.0

Browser/OS: Chrome 143 on Mac OS X 10.15.7

View result in a separate tab

String match

21.2M/s

Regex Test

0/s

View exact numbers

Test name	Executions per second
✓ String match	21,187,794 Ops/sec
Regex Test	0 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark definition and test cases to explain what's being tested, compared, and the pros/cons of each approach.

**Benchmark Definition**

The benchmark definition is a JSON object that represents a script that will be executed during the benchmarking process. In this case, there are two benchmark definitions:

1. `REGEX_URL.test("https://www.google.com?q=Georgi+Facello")`
2. `"http://www.google.com/q=Georgi+Facello".match(REGEX_URL)`

The first benchmark definition is testing a regular expression (regex) using the `test()` method of the regex object `REGEX_URL`. The input string is "https://www.google.com?q=Georgi+Facello".

The second benchmark definition is testing the match() function on the string `"http://www.google.com/q=Georgi+Facello"` with the same regex object `REGEX_URL`.

**Test Cases**

There are two individual test cases:

1. "Regex Test"
2. "String match"

These test cases are running the benchmark definitions provided earlier.

**Options Compared**

The two options being compared are:

* Regex testing using `test()` method
* String matching using `match()` function

**Pros and Cons of Each Approach:**

Regex testing using `test()` method:
Pros:

* Can be more efficient for testing regex patterns, especially if the pattern is complex.
* Can be used to test the regex engine's performance.

Cons:

* May not be as accurate as other methods, since it only tests the regex engine's performance and does not consider other factors like human interpretation.
* Requires a valid regex object `REGEX_URL`.

String matching using `match()` function:
Pros:

* More accurate than regex testing, since it takes into account human interpretation of the string.
* Can be used to test the match() function's performance.

Cons:

* May not be as efficient for testing complex regex patterns.
* Requires a valid regex object `REGEX_URL`.

**Library and Its Purpose**

The regex object `REGEX_URL` is likely a custom object that contains a regex pattern. The purpose of this object is to provide a pre-defined regex pattern for testing, which can be used in both the benchmark definitions.

**Special JS Feature or Syntax:**

There is no special JavaScript feature or syntax mentioned in the provided code. However, it's worth noting that the `test()` method and `match()` function are built-in JavaScript methods for testing regular expressions.

**Other Alternatives**

Some alternative approaches to benchmarking regex patterns include:

* Using a dedicated library like `regex-test` (Node.js) or `re2` (Python)
* Implementing a custom regex engine from scratch
* Using a testing framework that supports regex testing, such as Jest or Mocha

It's worth noting that the choice of approach depends on the specific use case and requirements of the benchmark.

Test regex (version: 0)

Comparing performance of: `Regex Test vs String match`

Created: 5 years ago by: Guest

Go to the latest result

Regex Test

String match

Historical Performance Data aggregated from 34 community runs

Desktop Results:

Chrome 25 runs

Firefox 9 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Test regex (version: 0)

Comparing performance of: Regex Test vs String match

Created: 5 years ago by: Guest

Go to the latest result

Regex Test

String match

Historical Performance Data aggregated from 34 community runs

Desktop Results:

Chrome 25 runs

Firefox 9 runs

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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

Related benchmarks

Comparing performance of: `Regex Test vs String match`