Benchmark: regexp test - MeasureThat.net

Script Preparation code:

var regexp1 = new RegExp("(.*(/v[1-4])?)/harmonogram", "i");
var regexp2 = new RegExp("(.*)/harmonogram", "i");

Tests:

c1
regexp1.test("localhost/harmonogram")
c2
regexp2.test("localhost/harmonogram")

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
c1
c2

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.61 Safari/537.36

Browser/OS: Chrome 94 on Windows

View result in a separate tab

Test name	Executions per second
c1	5836381.0 Ops/sec
c2	5965514.5 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 definition and test cases to understand what is being tested.

**Benchmark Definition JSON:**

The provided JSON defines two JavaScript benchmarks:

* `regexp1` and `regexp2`: These are regular expression objects created using the `RegExp` constructor. The first one has a more specific pattern (`(.*(/v[1-4])?)/harmonogram`) with an optional group, while the second one has a simpler pattern (`(.*)/harmonogram`). Both patterns match the string `/harmonogram` in a case-insensitive manner (indicated by the `i` flag).

**Options Compared:**

The two benchmarks compare the performance of regular expression matching with different levels of specificity:

* `regexp1`: A more specific regular expression pattern that captures additional information (`/v[1-4]`) before matching the `/harmonogram` string.
* `regexp2`: A simpler, less specific regular expression pattern that only matches the `/harmonogram` string without capturing any additional information.

**Pros and Cons:**

The choice between these two approaches depends on the use case:

* **Specificity:** If you need to extract more data from the matched string (e.g., version information), using `regexp1` might be beneficial. However, this comes at the cost of increased complexity and potentially slower performance.
* **Simplicity:** Using `regexp2` is simpler and may result in faster execution times for matching only the `/harmonogram` string. However, it may not provide as much useful data from the match.

**Library Usage:**

There is no explicit library usage mentioned in the provided benchmark definition. The `RegExp` constructor is a built-in JavaScript function used to create regular expression objects.

**Special JS Features/Syntax:**

The benchmark definition does not explicitly use any special JavaScript features or syntax that would require additional explanation.

**Other Alternatives:**

If you need to compare different regular expression patterns, alternatives could include:

* Using a library like `jsregex` or `regex-ast`, which provide more advanced regular expression capabilities and possibly improved performance.
* Implementing custom regular expression engines or optimizing existing ones for specific use cases.

Keep in mind that the choice of alternative approaches depends on your specific requirements, such as performance, complexity, and desired features.

Related benchmarks:

regexp test (version: 0)

Comparing performance of: c1 vs c2

Created: 3 years ago by: Guest

Jump to the latest result

c1

c2

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):