Benchmark: Is negative - MeasureThat.net

Tests:

Includes
"-5".includes("-")
Lt
"-5" < 0

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Includes
Lt

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_5) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1.1 Safari/605.1.15

Browser/OS: Safari 13 on Mac OS X 10.15.5

View result in a separate tab

Test name	Executions per second
Includes	39679740.0 Ops/sec
Lt	25395440.0 Ops/sec

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

LLMs can make mistakes. Check important info.

**What is being tested?**

MeasureThat.net is a website where users can create and run JavaScript microbenchmarks to compare the performance of different approaches to solving a specific problem.

In this case, we're looking at a simple benchmark that tests two things:

1. Whether a string contains a certain character.
2. Whether a number is less than zero.

**Options being compared**

The options being compared are:

* `includes()`: This method checks if a string contains a specified value. It returns `true` if the value is found, and `false` otherwise.
* `< 0`: This is a simple numerical comparison that checks if a number is less than zero.

**Pros and Cons of each approach**

1. **`includes()`**:
	* Pros: Simple to implement, easy to read, and maintainable code.
	* Cons: Can be slower than a direct numerical comparison for very large strings or numbers.
2. ** `< 0`**:
	* Pros: Fast and efficient, as it only requires a single arithmetic operation.
	* Cons: May require additional checks to handle cases where the number is exactly zero.

**Library used**

There isn't a specific library being used in this benchmark, but `includes()` is a built-in method of JavaScript strings. The numerical comparison `< 0` uses a simple arithmetic operation that is native to most programming languages, including JavaScript.

**Special JS features or syntax**

None of the options require any special JavaScript features or syntax beyond what's shown. Both approaches are straightforward and don't rely on any advanced concepts.

**Other alternatives**

If you wanted to add more complexity to this benchmark, some alternative approaches could include:

* Using a regular expression to match the specified character.
* Using a library like `string.prototype.search()` or `number.prototype.isLessThan()`.
* Adding noise to the input values (e.g., adding random characters or numbers) to simulate real-world data.

Keep in mind that these alternatives would likely add complexity and may not be necessary for a simple benchmark like this one.

Related benchmarks:

Is negative (version: 0)

Comparing performance of: Includes vs Lt

Created: 4 years ago by: Guest

Jump to the latest result

Includes

Lt

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):