Benchmark: Number - MeasureThat.net

Tests:

plus
var x = +"1000";
parse
var x = parseInt("1000", 10);
multi
var x = "1000"*1;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
plus
parse
multi

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net!

**Overview**

MeasureThat.net allows users to create and run JavaScript microbenchmarks, comparing different approaches to test various aspects of JavaScript performance. The provided JSON benchmark definition represents a simple "Number" benchmark with three individual test cases: `plus`, `parse`, and `multi`. We'll break down each test case, explaining the options being compared, their pros and cons, and any relevant libraries or special JavaScript features.

**Benchmark Definition**

The provided JSON defines a basic benchmark:

* `"Name": "Number"` - The name of the benchmark.
* `"Description": null` - An empty description, likely because this is a simple example.
* `"Script Preparation Code": null` - No script preparation code is required for this benchmark.
* `"Html Preparation Code": null` - Similarly, no HTML preparation code is needed.

**Individual Test Cases**

Each test case represents a different way to parse or manipulate the number "1000" in JavaScript:

1. **`plus`**: `var x = +\"1000\";`
	* Option: Using the unary plus operator (`+`) to convert the string `"1000"` to an integer.
	* Pros:
		+ Simple and efficient, as it leverages the built-in conversion mechanism.
	* Cons:
		+ May not be suitable for cases where the input string is not a valid number representation.
2. **`parse`**: `var x = parseInt(\"1000\", 10);`
	* Option: Using the `parseInt()` function to convert the string `"1000"` to an integer, with base 10 as the radix (default).
	* Pros:
		+ More flexible than the unary plus operator, allowing for more control over the conversion process.
	* Cons:
		+ May be slower due to the additional function call and potential overhead of parsing the radix.
3. **`multi`**: `var x = \"1000\"*1;`
	* Option: Using multiplication by 1 (a number) to implicitly convert the string `"1000"` to an integer.
	* Pros:
		+ Simple and efficient, as it leverages the implicit conversion mechanism of JavaScript.
	* Cons:
		+ May not be suitable for cases where the input string is not a valid number representation or has special characters.

**Libraries and Special Features**

In this benchmark, no external libraries are used. However, some special features of JavaScript are employed:

* **Unary plus operator (`+`)**: This operator is used to convert a string to an integer. It's a built-in feature in JavaScript.
* **`parseInt()` function**: This function is used to convert a string to an integer, with the specified radix (base). It's a built-in feature in JavaScript.

**Alternative Approaches**

Other ways to parse or manipulate the number "1000" in JavaScript could include:

* Using a different radix for `parseInt()`
* Employing regular expressions to extract the numeric value from the string
* Utilizing a library like Lodash or moment.js to handle parsing and conversion
* Leveraging WebAssembly (WASM) or other low-level technologies to optimize performance

**Benchmark Preparation Code**

Since no script preparation code is provided in the benchmark definition, it's likely that MeasureThat.net will generate this code automatically based on the test cases.

Overall, these three test cases demonstrate different approaches to parsing and manipulating numbers in JavaScript. By comparing their execution times and results, users can gain insights into the performance characteristics of each method.

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36

Browser/OS: Chrome 85 on Mac OS X 10.15.6

View result in a separate tab

Test name	Executions per second
plus	918868928.0 Ops/sec
parse	8356635.0 Ops/sec
multi	926455488.0 Ops/sec

Related benchmarks:

Number (version: 0)

Comparing performance of: plus vs parse vs multi

Created: 4 years ago by: Guest

Jump to the latest result

plus

parse

multi

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):