Benchmark: check regex vs split3

Script Preparation code:

var tester = /^[-!#$%&'*+\/0-9=?A-Z^_a-z`{|}~](\.?[-!#$%&'*+\/0-9=?A-Z^_a-z`{|}~])*@[a-zA-Z0-9](-*\.?[a-zA-Z0-9])*\.[a-zA-Z](-?[a-zA-Z0-9])+$/;
var email = "valid@gmail.com"
var email2 = "invalidgmail.com"

Tests:

regex
var emailParts = email.split('@'); var account = emailParts[0]; var address = emailParts[1]; if (account.length > 64) return false; else if (address.length > 255) return false; var domainParts = address.split('.'); if (domainParts.some(function (part) { return part.length > 63; })) return false;
Other
var emailParts = email.split('@'); var account = emailParts[0]; var address = emailParts[1]; if (account.length > 64) return false; else if (address.length > 255) return false; var domainParts = address.split('.'); if (domainParts.some(function (part) { return part.length > 63; })) return false; if (!tester.test(email)) return false; return true;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
regex
Other

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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 definition and test cases.

**Benchmark Definition**

The provided JSON represents a JavaScript microbenchmarking framework called MeasureThat.net. The `Script Preparation Code` section contains a regex pattern that defines the tester function, which is used to validate email addresses. Specifically, it checks if an email address matches the following format:

```
[-!#$%&'*+\\/0-9=?A-Z^_a-z`{|}~](\\.?[-!#$%&'*+\\/0-9=?A-Z^_a-z`{|}~])*@[a-zA-Z0-9](-*\\.?[a-zA-Z0-9])*\\.[a-zA-Z](-?[a-zA-Z0-9])+$
```

This regex pattern is used to test the `split()` method against the tester function.

**Individual Test Cases**

There are two individual test cases:

1. **"regex"`**
This test case uses the `split()` method to split an email address into its account and address parts. It then checks if these parts meet certain length criteria (account length > 64, address length > 255, and domain part length > 63). The tester function is used to validate the regex pattern.
2. **"Other"`**
This test case also uses the `split()` method to split an email address into its account and address parts. However, it adds an additional check using the tester function to validate the regex pattern. This means that if the regex pattern does not match, the test will return false.

**Options Compared**

The two test cases compare different approaches to validating the regex pattern:

* **"regex"`**: Uses the `split()` method and the tester function to validate the regex pattern.
* **"Other"`**: Uses the `split()` method but adds an additional check using the tester function to validate the regex pattern.

**Pros and Cons**

Here are some pros and cons of each approach:

* **"regex"`**:
	+ Pros: Simple and efficient, as it only uses the `split()` method.
	+ Cons: May be slower than other approaches if the regex pattern is complex or has many branches.
* **"Other"`**:
	+ Pros: Adds an additional layer of validation using the tester function, which can improve accuracy.
	+ Cons: May be slower due to the additional check, and may introduce more complexity.

**Library Used**

The `tester` variable in the script preparation code is a regex pattern that defines the tester function. The purpose of this library is to validate email addresses against a specific format.

**Special JS Feature or Syntax**

There are no special JS features or syntax used in this benchmark definition. It only uses standard JavaScript features and functions, such as `split()` and string concatenation.

**Other Alternatives**

If you're interested in exploring alternative approaches to validating regex patterns, here are some options:

* Using a dedicated library like `regex-tester` or `validate`
* Implementing your own custom validation function
* Using a different string splitting approach, such as using a regular expression with the `match()` method

Keep in mind that these alternatives may have their own pros and cons, and may not offer significant improvements over the existing benchmark definition.

Related benchmarks:

check regex vs split3 (version: 0)

Comparing performance of: regex vs Other

Created: 2 years ago by: Guest

Jump to the latest result

regex

Other

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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