Benchmark: test index of not found

Script Preparation code:

var string = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.'

Tests:

indexof
string.indexOf('consequat')
includes
string.includes('consequat')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
indexof
includes

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 JSON benchmark definitions and explain what's being tested, compared, and other considerations.

**Benchmark Definition**

The first JSON object represents the overall benchmark definition:
```json
{
  "Name": "test index of not found",
  "Description": null,
  "Script Preparation Code": "var string = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.'",
  "Html Preparation Code": null
}
```
Here, we have a script preparation code that defines a string variable `string` containing a sample text. The purpose of this code is to prepare the test data for execution.

**Individual Test Cases**

The second JSON object represents individual test cases:
```json
[
  {
    "Benchmark Definition": "string.indexOf('consequat')",
    "Test Name": "indexof"
  },
  {
    "Benchmark Definition": "string.includes('consequat')",
    "Test Name": "includes"
  }
]
```
We have two test cases:

1. `indexof`: Tests the `indexOf` method of the string object, which returns the index of the first occurrence of the specified value.
2. `includes`: Tests the `includes` method of the string object, which returns a boolean indicating whether the specified value is present in the string.

**Comparison and Options**

Both test cases use the same script preparation code (`string`) to define the test data. The difference lies in the comparison function:

1. `indexOf` uses a direct indexing approach, searching for the first occurrence of the specified value.
2. `includes` uses a substring matching algorithm, checking if the specified value is present anywhere in the string.

**Pros and Cons**

Here are some pros and cons of each approach:

* `indexOf`:
	+ Pros: Faster execution, as it only searches for the first occurrence.
	+ Cons: May return an index out of bounds error if the value is not found.
* `includes`:
	+ Pros: More reliable, as it returns a boolean indicating presence or absence.
	+ Cons: Slower execution, as it needs to check every character in the string.

**Library and Purpose**

No libraries are explicitly mentioned in this benchmark. However, both `indexOf` and `includes` methods are built-in JavaScript methods that can be used without any additional dependencies.

**Special JS Feature or Syntax**

There is no special JavaScript feature or syntax being tested here.

**Other Alternatives**

If you wanted to test alternative implementations of these methods, you could consider using:

* `string.match()` for a regex-based approach
* `array.prototype.indexOf()` for a more complex indexing algorithm
* A custom implementation using bitwise operations or other optimized algorithms

Keep in mind that the best approach will depend on your specific use case and requirements.

**Benchmark Preparation Code**

The script preparation code is intentionally simple to allow for easy benchmarking. In practice, you might want to add more test cases, variations, or edge conditions to make the benchmark more comprehensive.

I hope this explanation helps!

Related benchmarks:

test index of not found (version: 0)

Comparing performance of: indexof vs includes

Created: 2 years ago by: Guest

Jump to the latest result

indexof

includes

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):